17-Nov-18 07:25 PM Post personal part sales, requests, trade offers, and auctions here. ️ Auctions posted here are free game for anyone! 18-Nov-18 12:52 AM Pinned a message. 20-Nov-18 12:41 AM https://www.ebay.de/itm/192533701889 20-Nov-18 09:08 PM So I'm just going to throw this out there, if some one want to trade a FIB or ion cross section polisher for my ISI Super IIIA SEM... I'm listening. It's fully functional, and I can hit about 20kX with it right now, I'm sure it can go further though with a bit of work. I have a lot more for it than is in this picture, including a complete spare set of consoles, and a lot of other smaller spare components for it. Also it ofcourse has a stage, it just wasn't attached in this photo. 20-Nov-18 09:08 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/5-gZkYlCrIilF7VjU5QROG_sgdqRkUlnwfyLHspeiK-8B88E.png 21-Nov-18 03:26 AM the stage is on the pic "above" the column on the bench, right? 21-Nov-18 06:23 AM i like this SEM, it's kinda cute 22-Nov-18 10:20 PM figure its better to post this here than anywhere else: I have a large set of 3/8" machine screws and nuts 22-Nov-18 10:20 PM I have no use for them, so if anyone wants them, theyre free to a good home 22-Nov-18 10:20 PM (they are stainless steel, buyer beware) 22-Nov-18 10:28 PM How long? 23-Nov-18 01:24 AM i have a super isi IIIA too 23-Nov-18 01:24 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-EDEF7.jpg 23-Nov-18 01:24 AM widow of my chemistry teacher gave it to me, she wanted to move & and get rid of the strange things from the basement 23-Nov-18 01:29 AM Does it run? 23-Nov-18 01:30 AM yes 23-Nov-18 01:30 AM i had to tear it apart to get it from the basement and build it up again 23-Nov-18 01:32 AM Nice. What kind of mag can you pull off? 23-Nov-18 01:34 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/frame-8EA43.jpg 23-Nov-18 01:34 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/SEM2-7ACE2.jpg 23-Nov-18 01:36 AM Is yours one of the suspended HT tank ones? 23-Nov-18 01:37 AM How about moving this conversation to #show-and-tell ? 23-Nov-18 01:37 AM Fair... 23-Nov-18 01:39 AM yeah makes sense %) 23-Nov-18 08:24 PM @AdamMcCombs iirc theyre about an inch to an inch and a half? 26-Nov-18 12:36 AM https://www.ebay.de/itm/132495322693 26-Nov-18 01:03 AM https://www.ebay.de/itm/332777248112 26-Nov-18 06:32 AM https://www.ebay.de/itm/253982419822 27-Nov-18 05:11 AM I'm looking for a 2-lug triax to BNC adapter, best case from inside the eu, has anyone here got one they want to get rid of? 27-Nov-18 06:40 AM Has anyone, preferably EU, got a KF-16 hose I could steal/buy/swap? 27-Nov-18 06:47 AM I might, what size? 27-Nov-18 06:49 AM not too fussed Just need to connect a roughing pump to a TMP. 27-Nov-18 06:50 AM Will check once I'm home :) 27-Nov-18 06:50 AM thanks! 27-Nov-18 07:12 AM if Gigabecquerel doesn't have, KF-16's in aliexpress are cheap enough. 28-Nov-18 03:02 AM I checked my triax bnc adapters but they’re all 3 lug 28-Nov-18 03:12 AM thanks anyways 28-Nov-18 03:12 AM oh, and all my hoses (at least the ones I can spare) are KF25 28-Nov-18 03:25 AM 500mm 30$-ish https://www.ebay.com.au/itm/Stainless-Steel-KF-16-Flexible-Hose-500Mm-Vacuum-Corrugated-Pipe-Tube-New-br/302944883171?hash=item4688ec11e3:g:TK4AAOSwE8Vb3e6d:rk:8:pf:0 28-Nov-18 03:25 AM Ebay Australia is almost always 1/2$ cheaper than ebay.com, for the same shipping from china. XD 29-Nov-18 06:04 PM This is a dumb question and I feel like I've asked it a bunch of times, but are there any good/cheap sources for technical ceramics for e.g. HV vacuum insulators and stuff? McMaster or somethin'? 29-Nov-18 06:04 PM Avoid McMaster ceramic at all cost 29-Nov-18 06:04 PM I have never used McMaster and I keep hearing steadily worse things about it 29-Nov-18 06:05 PM McMaster is kinda magic 29-Nov-18 06:05 PM Just not the ceramic 29-Nov-18 06:05 PM Personally I'm a pretty big McMaster fan... 29-Nov-18 06:05 PM The ceramic is ok for "normal" use 29-Nov-18 06:05 PM It's when you hit the edge cases that you have problems 29-Nov-18 06:07 PM I assume 'high vacuum' and 'holding off many kilovolts' count as edgelike cases 29-Nov-18 06:07 PM Yup 29-Nov-18 06:08 PM possibly also 'things will get hot' but i cannae quantify that just yet 29-Nov-18 06:08 PM Or when pick/nano amps matter 29-Nov-18 06:08 PM I don't know about heat 30-Nov-18 03:36 AM @qualia I've been buying stuff from advancer53 on eBay. Not cheap, but has a good variety. He is also knowledgeable about ceramics and will answer questions. Btw, you really really have to use diamond to cut and finish alumina. 30-Nov-18 03:49 AM I made sort of a notch in an 0.4 " thick walk high purity alumina tube after some considerable effort with a silicon carbide cutoff wheel. I figured I could break out then, so I tried using my hands. Nope. put it in the vise and pulled on it. My bench moved. Braced myself against bench and pulled real hard. It broke. Diamond tools are petty cheap now on Amazon, etc. I should really figure out a more delicate cutoff than the glass tile saw I use on my angle grinder because it usually leaves chips. But I can clean things up using a diamond sharpening stone. For tubes it works well to chuck the tube in a drill or lathe when using the stone. 30-Nov-18 03:49 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20181130_065132465-25BF0.jpg 30-Nov-18 04:01 AM good to know, ty! I'll have to grab some cheap diamond cutoff wheels or somethin, for when i get to that point 30-Nov-18 04:09 AM "Brownian motion technology" is also a noteworthy vendor on Amazon and eBay. They have identified useful vacuum components and are getting them made in Asia and selling them cheap. I got one of these feedthrus, tho I haven't used it yet. https://www.amazon.com/flange-electrical-voltage-through-insulation/dp/B074WMK353/ref=mp_s_a_1_72?ie=UTF8&qid=1543579511&sr=1-72&m=ATW44L4HCIMGU&pi=AC_SX236_SY340_QL65&dpPl=1&dpID=41IT1jyB0jL&ref=plSrch 30-Nov-18 06:59 AM I've also bought some stuff from Brownian Motion on ebay too, some kf25 hardware. Happy with it so far, no issues yet 30-Nov-18 07:26 AM Ben Krasnow said that his FormX now had the resin to do ceramic pieces (after high temp baking) I wonder if they would be usable. 30-Nov-18 07:30 AM Wouldn't hurt to ask him? 30-Nov-18 07:40 AM I rejected meeting him for a sofa spot at the Hackaday Superconference, so I'm not going to ask him. (Adam can confirm) 30-Nov-18 07:40 AM it was a VERY COMFORTABLE sofa. 30-Nov-18 08:12 AM implies you don't like him? ^^ 30-Nov-18 08:31 AM how spongy would the sintered thingy be? 30-Nov-18 08:42 AM I respect him, but I found that meeting/talking for extended periods with famous people from youtube in the Hackaday superconference was not possible for me. (my project not being interesting enough to catch their attention/interest) so I just decided I was going to spend the next 3h in a very comfortable sofa next to people I could talk to, than beside someone I probably would not talk with ever again. 30-Nov-18 08:42 AM (I could have talked to Adam, but it felt like I would be intruding between the two of them (Adam and Krasnow), wich was a no-no, too.) 30-Nov-18 08:53 AM ah ok 30-Nov-18 08:53 AM you are shy :3 30-Nov-18 08:53 AM me2 30-Nov-18 08:55 AM Yeah. 30-Nov-18 08:55 AM (btw, we should move out of te swap meet) 30-Nov-18 08:55 AM ----> #general 30-Nov-18 09:06 AM ok or off-topic? 30-Nov-18 09:09 AM It's tech relevant/vacuum relevant, I'd say #general 01-Dec-18 06:34 AM https://www.ebay.com/itm/C155416-MDC-CF-Conflat-Multi-Port-Cross-Vacuum-Flange-Chamber-1-33-2-75-6-10-/332915704937 01-Dec-18 06:34 AM i am not sure what the deal is with the knife edges on that but 01-Dec-18 09:20 AM Damn that looks gorgeous 01-Dec-18 02:10 PM @GigaSquirrel Do you have pictures of the type of BNC you need? A friend or two might have something. I'm quite sure I dont have any. At most it's gona be some funky 4pin BNC's used in telecom. 01-Dec-18 02:10 PM sure, one sec 01-Dec-18 02:10 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20181201_231124-5C57F.jpg 01-Dec-18 02:10 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20181201_231113-45CB5.jpg 01-Dec-18 02:10 PM I need the counterpart to this connector, adapted to any form of regular BNC, SMA or whatever 01-Dec-18 02:10 PM the outer diameter is just like regular BNC, but the ring inbetween shield and center conductor is important 01-Dec-18 02:14 PM another friend had a meter of some random triax and that got used with another dudes picoampmeter with triax input. 01-Dec-18 02:15 PM 3-lug triax is not an issue, there are many adapters avilable for it, but this is an older 2 lug version 01-Dec-18 02:16 PM Ah 01-Dec-18 02:16 PM ofc I could swap it for a 3lug, but I'd like to avoid soldering inside the frontend... 01-Dec-18 02:17 PM Understandable. 01-Dec-18 02:18 PM thanks for asking him! 01-Dec-18 02:18 PM can the uni just give away things? O.o 01-Dec-18 02:19 PM To a uni-affiliated club? sure 01-Dec-18 02:19 PM And they regularily raid the E-waste bins 01-Dec-18 02:19 PM I should actually test the rubidium reference I pulled from some scrapped equipment 01-Dec-18 02:19 PM cool! 01-Dec-18 02:20 PM There has been major renovations, so TONS of stuff is getting disposed and so on 01-Dec-18 02:20 PM There is more usefull stuff and parts then people to make use of them. Which is the usual problem with clubs around here. Like the more legendary Nokia and Salo amateur radio clubs 01-Dec-18 02:20 PM which got tons of stuff during the eighties/nineties. We are still using stuff left over from 1989 production runs for hobbyprojects. 01-Dec-18 02:22 PM let's first move this to #off-topic-thats-sometimes-on-topic 02-Dec-18 08:17 AM https://www.ebay.com/itm/273565777444 02-Dec-18 08:17 AM https://www.ebay.com/itm/273565776845 05-Dec-18 04:04 AM Anyone looking to buy a SEM on the east coast new Jersey area dm me ASAP 07-Dec-18 06:41 AM https://www.ebay.com/itm/163417251912 07-Dec-18 06:41 AM @Nixie wink wink 07-Dec-18 06:54 AM Ok anyone here want a JSM 840 SEM? 07-Dec-18 07:09 AM @AdamMcCombs can you ship it over the Atlantic for me? 07-Dec-18 07:31 AM me wants but distance you kno 07-Dec-18 07:32 AM This one is iowa 07-Dec-18 07:32 AM what would shipment to germany cost? 07-Dec-18 07:32 AM jk 07-Dec-18 07:32 AM hey germany fellows, we could share a 20' container some day 07-Dec-18 07:32 AM it's not that expensive - i mean shipping a 20' or 40' CC over the atlantik 07-Dec-18 07:32 AM app. 3k Euro 07-Dec-18 07:32 AM + a storage site in the US + the logistics to the storage site and from the storage site to the harbor 07-Dec-18 08:00 AM no? 07-Dec-18 08:00 AM jk 07-Dec-18 08:00 AM would be super awesome 07-Dec-18 08:08 AM would be very cool 07-Dec-18 08:08 AM and also very, very expensive 07-Dec-18 08:08 AM not the container itself, but I don't think I could hold myself back in buying all the things 07-Dec-18 08:16 AM hehe, yeah, that's the downside 07-Dec-18 08:22 AM the problem with that is mostly getting someone that is willing to deal with the hassle of storage/customs/palletizing 07-Dec-18 08:33 AM yep, i guess, 'we' have to fly over there 07-Dec-18 08:33 AM respectively one of us per action (encouraged to make friends with residents) 07-Dec-18 08:36 AM Im going to be in Iowa... 07-Dec-18 08:36 AM what's the time frame? 07-Dec-18 08:36 AM and what's the price? 07-Dec-18 08:37 AM Time frame is probably next weekend 07-Dec-18 08:37 AM Scope probably free 07-Dec-18 08:37 AM I'm still trying to get it for myself as well but... 07-Dec-18 08:38 AM ok, you could be our storage facility manager 07-Dec-18 08:38 AM you have the job! 07-Dec-18 08:51 AM Ow feck...a fre scope Dang 07-Dec-18 08:51 AM @GigaSquirrel , we are sorry but @Nixie is out of money, please, try to contact at some later date. 07-Dec-18 08:51 AM 09-Dec-18 01:47 PM https://www.ebay.com/itm/112179867983 09-Dec-18 01:56 PM 1) get scope, 2) train hackerspace, 3) prophet 09-Dec-18 01:56 PM 0) get hackerspace to pay for shipping scope 10-Dec-18 05:23 AM Only $859 to ship that TEM to uk @AdamMcCombs :o 10-Dec-18 05:23 AM envy 10-Dec-18 05:23 AM What? 10-Dec-18 05:23 AM That's like half the cost of the crating for it 10-Dec-18 05:25 AM shrug 10-Dec-18 05:25 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screenshot_2018-12-10-13-25-09-5219A.png 10-Dec-18 05:26 AM That's portal to portal 10-Dec-18 05:26 AM You have to rent a container, pay port and brokerage fees, get it to the port, get it back from the port, ect... 10-Dec-18 05:28 AM Pfft details 10-Dec-18 05:29 AM Plus for ocean shipping you need special vacuum bags and customs pre clearance which means you need a known party identifier 10-Dec-18 05:30 AM Shhhhhhh 10-Dec-18 05:30 AM Let me dream 10-Dec-18 05:30 AM Can't get a SEM cheaper than about £14k minimum in the uk 10-Dec-18 04:12 PM I know they go for free... 10-Dec-18 10:37 PM You make.our hearts hurt everytime you say that, Adam. 11-Dec-18 03:24 AM Last year I know if 3 SEMs that went for free in the UK. I didn't know about them before hand but it still happened 11-Dec-18 04:42 AM Keep an eye on spain...just in case. I can borrow a van from my gf's work. 11-Dec-18 07:13 AM got mine for free to, was more a remove this ugly stuff from the basement job 11-Dec-18 07:34 AM cries a little bit 11-Dec-18 10:49 AM has anyone in the EU got a ludlum 44-9 or similar they want to sell? 11-Dec-18 10:58 AM @AdamMcCombs What's stopping you from getting it for yourself, shipping it back home? 11-Dec-18 10:59 AM I guess by now: space 11-Dec-18 11:00 AM I don't have space, but I'm sure I could easily make space by throwing out things that are less cool to have in the basement than an SEM... 11-Dec-18 11:00 AM Yeah space is hard 11-Dec-18 11:00 AM also he's already got a couple of SEMs and TEMs 11-Dec-18 11:00 AM But I think I'm going to do it 11-Dec-18 11:00 AM Maybe 11-Dec-18 11:01 AM I'm about 30 minutes from the Mississippi, or maybe 3.5hr from Des Moines. If you want help removing it from a random internet person, I might be free next weekend... 16-Dec-18 03:13 PM https://www.mascom-bremen.de/html/en/vacuum-components/kf-series-components/kf-metal-seal-dn20-25-aluminium/article-1-0552930S-ONLINE_.SHOP90209020490.html 17-Dec-18 01:23 AM gimme your TEMs 17-Dec-18 01:23 AM But they are my TEMs 17-Dec-18 01:23 AM And soon there will be more of them;) 17-Dec-18 01:24 AM ;_; 17-Dec-18 08:19 AM There will be more of TEMs... 17-Dec-18 08:19 AM missed opportunity. 20-Dec-18 04:02 AM Interesting vacuum equipment from Germany: https://www.ebay-kleinanzeigen.de/s-anzeige/vacuumprobenkammer-mit-motortisch-elektronenmikroskop/420236450-168-17419 20-Dec-18 04:24 AM Is that a full electron microscope?? 20-Dec-18 04:24 AM can't see the price, though. 20-Dec-18 04:29 AM looks a bit sick 20-Dec-18 04:29 AM it's the column with a diffusion pump, i guess 20-Dec-18 04:29 AM the HV connector is wrapped in the bag, i guess, because it's oily 20-Dec-18 04:29 AM it's dated 02.03.2016 btw 20-Dec-18 04:29 AM 03.02.2016 20-Dec-18 04:29 AM @niklas you like x-ray, right? 20-Dec-18 04:29 AM guess i've the perfect rig for you :3 20-Dec-18 04:36 AM Well, I like reverse engineering alot 20-Dec-18 04:36 AM And there is nothing more painful than sanding off multilayer pcbs 20-Dec-18 04:36 AM So yeah 20-Dec-18 04:36 AM I'm interested :3 20-Dec-18 04:36 AM I would like to see bondwires, so I can identify unmarked chips 20-Dec-18 04:36 AM for that, I need a microfocus source with <10µm spotsize 20-Dec-18 04:37 AM @niklas https://www.vebeg.de/web/de/verkauf/suchen.htm?DO_SUCHE=1&SUCH_topsearch_term=container&SHOW_AUS=1850460&SHOW_LOS=2 20-Dec-18 04:37 AM look at the picture of the xray tube %) 20-Dec-18 04:37 AM the long gray tube i guess %) 20-Dec-18 04:38 AM yup, already found that 20-Dec-18 04:38 AM ah ok ^^ 20-Dec-18 04:39 AM I would like to go a bit smaler than that 20-Dec-18 04:44 AM yeah okay 20-Dec-18 04:44 AM @niklas you need such a kit, right https://www.ebay.com/itm/254002668098 ? 20-Dec-18 04:47 AM yes 20-Dec-18 04:47 AM I already have a detector, so a good source would be enough 20-Dec-18 04:47 AM The Hamamatsu sources are great, but usually not available for cheap 20-Dec-18 04:47 AM they usually go for >$1000 20-Dec-18 04:47 AM You can get such tubes from faxitron devices like these: https://www.ebay.co.uk/itm/Faxitron-X-Ray-DX-50-Digital-Biopsy-System-with-Option-DC3/401655163232 20-Dec-18 04:47 AM they are less expansive, but only have 25kV which is not very much vor electronics reverse engineering 20-Dec-18 04:51 AM yeah 20-Dec-18 04:51 AM So yeah, the hamamatsu soures are basically my best option, but 700€ for https://www.aliexpress.com/item/HAMAMATSU-L7632-01-TUBEN-UNIT/32788367517.html in unknown condition from China... idk 20-Dec-18 04:52 AM and as an alternative you thought about using an old SEM as a x-ray tube? 20-Dec-18 04:53 AM btw if anyone of you need a digital xray sensor, 1052x4000 pixel I have some left 20-Dec-18 04:53 AM what's their interface? are they CCD or something like that? 20-Dec-18 04:53 AM I'll wait until someone in the group offers a service for X-raying things. XDDD 20-Dec-18 04:54 AM (never played with xray sensors) 20-Dec-18 04:54 AM it is CCD but you have to move the sensor mechanically, the very detector only has 1052x64 or so pixel 20-Dec-18 04:54 AM xray-image sensors 20-Dec-18 04:54 AM ah 20-Dec-18 04:54 AM @Nixie can do 20-Dec-18 04:54 AM only problem is feature resolution 20-Dec-18 04:54 AM https://hackaday.io/project/62710-taking-digital-xray-shots-for-cheap-300 20-Dec-18 04:54 AM thate me 20-Dec-18 04:55 AM your current limitation is the xray source then? 20-Dec-18 04:55 AM looks fantastic ^^ 20-Dec-18 04:55 AM yep super nice 20-Dec-18 04:56 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/photo5310265967156242751-A3D1E.jpg 20-Dec-18 04:56 AM this is a more recent photo with a newer source 20-Dec-18 04:56 AM @N00N yup 20-Dec-18 04:56 AM wow 20-Dec-18 04:57 AM https://twitter.com/FauthNiklas/status/976226798840307713 20-Dec-18 04:57 AM https://twitter.com/FauthNiklas/status/976172079618969601 20-Dec-18 04:57 AM $50 for a dental x-ray head, $250 for the digipan off ebay, $20 for diy fpga capturing hardware 20-Dec-18 04:57 AM After I did this project I got additional 8 Digipan from a friend for ~50€ and I still have some of them left, so if anyone needs one I can sell them for super cheap 20-Dec-18 05:05 AM i am interested, but i've no x-ray tube 20-Dec-18 05:05 AM @niklas i guess you've experimented with "visual" cmos sensors + scintillator & collimator plates from old film xray cassettes? 20-Dec-18 05:07 AM let's move this to #show-and-tell 20-Dec-18 05:07 AM ok 23-Dec-18 08:40 AM https://www.ebay.com/itm/143060563553 Cheap-ish He3 prop tube 23-Dec-18 08:40 AM http://consensus-group.ru/images/ip/counters/docs/SNK-18-210-9,0-OM.pdf Datasheet for it 23-Dec-18 12:25 PM does anyone have an IR sensitive vidicon tube? 23-Dec-18 01:50 PM https://www.ebay-kleinanzeigen.de/s-anzeige/zeiss-dsm-960-rasterelektronenmikroskop/959409979-84-4715 23-Dec-18 01:50 PM dunno if that's a good deal 24-Dec-18 07:45 AM @GigaSquirrel I saw one of those ³He tubes spring up for sale via saved search a day or two ago and instantly jumped on it c: i think it arrives today actually 24-Dec-18 08:02 AM cool, congrats! 24-Dec-18 08:11 AM which one exactly? 24-Dec-18 08:15 AM that exact one, actually. CHM-17/SNM-17. i guess the seller has multiple of 'em 24-Dec-18 08:17 AM oh, wow, 9 bar 24-Dec-18 08:17 AM and btw, it's SNM, "CHM" is just what the cyrillic letters look like in latin 24-Dec-18 08:22 AM also, from the related results.. this looks like a pretty nice deal for little lead pigs. maybe slap on a fresh coat of paint to keep lead from getting everywhere, if you get a scratched up one.. us/canada only though https://www.ebay.com/itm/LEAD-PIG-FOR-RADIATION-SHIELDING/153312433190 24-Dec-18 08:22 AM it has not occurred to me until now that ebay might be the right place to buy stuff like lead sheeting 24-Dec-18 08:22 AM (i know United Nuclear wants like a silly amount of money for their lead pigs, but then there's are, I think, large enough to hold those isotope sample disks) 24-Dec-18 01:12 PM oh by the way, can anyone tell me where to get an adapter from ISO-K 250 to 320? (affordable, that is) 27-Dec-18 07:29 PM Was I just bidding against one of you on a sputter coater on eBay? 27-Dec-18 11:52 PM Not me! XD 27-Dec-18 11:52 PM @Pan Da have you checked aliexpress? 30-Dec-18 03:45 PM https://www.ebay.com/itm/392150045708 30-Dec-18 05:19 PM Does anyone need a bigger Diffusion Pump with an CF160 flange ? 30-Dec-18 05:36 PM CF dif pump? 30-Dec-18 05:51 PM oh wait sorry, I think it's actually iso-k 30-Dec-18 05:51 PM not sure anymore 30-Dec-18 05:51 PM ah no, should be iso-k 30-Dec-18 05:51 PM but are dif pumps with an CF flange so rare, or why r u asking about the flange? 30-Dec-18 05:55 PM Yeah CF dif pumps are odd 30-Dec-18 05:55 PM Not unheard of but odd 30-Dec-18 05:55 PM dif pumps don't work really well in the ranges that you would need to use CF over iso 30-Dec-18 05:55 PM so most don't deal with the extra cost of putting a cf flange on 30-Dec-18 05:55 PM There are special systems like DP cascade systems with ultra low vapor pressure oils where you have to use CF, but those systems pretty much all run turbos now 30-Dec-18 05:55 PM The no oil next to ultra clean vacuum system thing. 31-Dec-18 03:16 AM oh ok, thanks for the insight! 01-Jan-19 02:07 PM anyone interested? is for 220V but with gauges. but didnt test yet 01-Jan-19 02:07 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190101_220209-9F989.jpg 02-Jan-19 05:28 AM how much would you pay for a working Zeiss DSM 960? 02-Jan-19 05:31 AM you should mention @AdamMcCombs 02-Jan-19 07:17 AM @niklas that depends on a lot of things. Market value for those old scopes is odd... Also the fact that it's working now is great, but the second you move it expect that to change. 02-Jan-19 07:17 AM Some things to look for are if it has a digital interface, more detectors, eds, or other upgrades 02-Jan-19 07:17 AM I'm thinking of contacting the seller of https://www.ebay-kleinanzeigen.de/s-anzeige/zeiss-dsm-960-rasterelektronenmikroskop/959409979-84-4715 02-Jan-19 07:17 AM But I wanted to know in what range usual prices for these things are 02-Jan-19 07:17 AM I know that it is a lot of work to get these running again 02-Jan-19 07:18 AM That's a bit high 02-Jan-19 07:20 AM yeah I won't get it for that price, but maybe for 2000-3000... 02-Jan-19 07:20 AM 2000 isn't a bad number for that system 02-Jan-19 07:20 AM Apparently the Oxford stuff is nice as well 02-Jan-19 07:23 AM okay, thanks 02-Jan-19 07:23 AM good to know 02-Jan-19 07:23 AM Also it depends non how much it's going to be to move it to you location 02-Jan-19 07:23 AM And what it's going to need for water chilling and vacuum pumps 02-Jan-19 07:23 AM Pretty much come down to what you are willing to pay 02-Jan-19 07:24 AM aren't these things self-contained? 02-Jan-19 07:24 AM It's definitely to high as is thou 02-Jan-19 07:24 AM Oh definitely no 02-Jan-19 07:24 AM Probably comes with vacuum pump but may or may not co.e with water chiller 02-Jan-19 07:25 AM okay 02-Jan-19 07:25 AM Also you have to be worried about power 02-Jan-19 07:25 AM It may also need compressed air or nitrogen 02-Jan-19 07:25 AM That looks like a nice one though 02-Jan-19 07:25 AM Motorized stage, Oxford Inca, turbo, chamber scope, and some other stuff 02-Jan-19 07:25 AM But I don't see schematics, manual, service records, tools, or other stuff it should have 02-Jan-19 07:30 AM I have the schmatics and manuals, someone frm a German electronics forum even already build a open source digital capturing hardware for it 02-Jan-19 07:31 AM Nice. Just making sure it comple is the big thing 02-Jan-19 07:31 AM I like to do the deinstale myself for that reason 02-Jan-19 07:31 AM You Also tend to get more hardware for free 02-Jan-19 07:31 AM Link to interface? 02-Jan-19 07:33 AM https://www.mikrocontroller.net/topic/rasterelektronenmikroskop-zeiss-dsm-960 02-Jan-19 07:33 AM https://gus.tl/uni/zula/Zulassungsarbeit.pdf 02-Jan-19 07:35 AM From a specs prespective is a good scope though 02-Jan-19 07:35 AM Big chamber helps as well 02-Jan-19 07:36 AM about transport, it's only 100km away and I have a car that should fit it 02-Jan-19 07:37 AM As far as resolution goes that's going to depend on how clean the column is 02-Jan-19 07:37 AM Car? 02-Jan-19 07:37 AM VW T4 02-Jan-19 07:37 AM Oof 02-Jan-19 07:37 AM You may need something taller 02-Jan-19 07:37 AM Also sketchy ramps on the receiving end is hard 02-Jan-19 07:37 AM That column is probably 1200lbs 02-Jan-19 07:37 AM Also it's very top heavy which is not going to help 02-Jan-19 08:10 AM You might want to rent a truck or truck+trailer. Don't know about where you live, but was surprised how little it cost to rent a pickup + heavy duty equipment trailer for moving milling machine, <$100 for half day. The trailer bed is low, makes unloading easier. 02-Jan-19 08:10 AM Trailer is rough on a scope 02-Jan-19 08:10 AM Truck with a good lift gate is best 02-Jan-19 08:10 AM And it really has to be a good lift gate or the scope is going to end up on it's side having just crashed into the ground 02-Jan-19 08:10 AM That or forklift 02-Jan-19 08:10 AM Not that you can't do a trailer I just wouldn't 02-Jan-19 08:21 AM Does anyone know an Android developer who is in need of mechanical fabrication so we can barter? 03-Jan-19 06:30 AM Dammit, I only get replies from businesses. :/ 04-Jan-19 04:01 AM https://www.ebay.com/itm/173651734677 Very cheap KF40 viewports 04-Jan-19 04:06 AM bought one already 04-Jan-19 04:19 AM bought 2 04-Jan-19 06:28 AM Your definition of Very cheap, is not my definition of very cheap. XDDD 04-Jan-19 06:29 AM relatively speaking^^ 09-Jan-19 04:36 PM boooo 09-Jan-19 04:36 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screen_Shot_2019-01-09_at_4.35.53_PM-C0ABD.png 09-Jan-19 04:40 PM Hah 09-Jan-19 07:15 PM @qualia if it's not too big, you could let me or @GigaSquirrel order it and then pick it up... sometime in the future 09-Jan-19 07:18 PM hm, maybe! 09-Jan-19 07:50 PM "Whatcha flying to Germany for?" "Picking up a KF40 viewport from a friend." "..." 09-Jan-19 07:50 PM seems like a legit excuse for a vacation. 10-Jan-19 01:03 AM right, you're coming to germany anyways! 10-Jan-19 01:05 AM oh yeah, always good. I have a sofa in my lab, feel free 10-Jan-19 02:37 AM comes, takes sofa away 10-Jan-19 04:37 AM you can also just sleep here :p 10-Jan-19 04:38 AM wouldn't that be uncomfortable once he took the sofa? 10-Jan-19 04:44 AM maybe he likes to sleep on the floor? 10-Jan-19 04:48 AM XD 10-Jan-19 04:59 AM or he wants to cuddle. we'll probably never know... 10-Jan-19 05:50 AM I'm not sure if talking about cuddling is the best Idea in swap-meet, let's go over to #off-topic-thats-sometimes-on-topic 10-Jan-19 07:08 AM why? can't we exchange cuddles and call it a mental productivity boost exchange, which would make it fit nicely to this channel? 10-Jan-19 07:18 AM this channel is more focused on material Exchange 10-Jan-19 07:33 AM lewd! 10-Jan-19 09:14 AM Bahahaha 10-Jan-19 11:05 AM https://www.ebay.com/itm/142977463996 Very good professional MCA for cheap...ish 10-Jan-19 11:05 AM http://amptek.com/products/dp5-digital-pulse-processor-and-mca/ and it even comes with specs! 10-Jan-19 11:06 AM Yeah I have been looking at the amp tek stuff 10-Jan-19 11:06 AM It's tempting 10-Jan-19 11:06 AM extremly good hardware from what I can tell 10-Jan-19 11:06 AM but I've never worked with their software 10-Jan-19 11:06 AM It's what's in most oem systems 10-Jan-19 11:07 AM oh, nice 10-Jan-19 11:07 AM now's your chance! 10-Jan-19 12:47 PM that doesn't look very special hardware wise, if you don't have to work with some other system just using an adequate adc seems easy enough 10-Jan-19 12:54 PM yeah, both hardware and software of a MCA are actually pretty simple 10-Jan-19 12:54 PM but I know nothing about coding and fpga / µC design and coding 10-Jan-19 12:54 PM so it's cheaper and easier to buy one 10-Jan-19 01:33 PM great project to learn about that then 11-Jan-19 01:41 AM https://www.ebay.com/itm/Amptek-FAST-SDD-Silicon-Drift-Detector-X-Ray-EDS-SEM-XRF/123367235818 11-Jan-19 01:41 AM this is also a pretty good offer 11-Jan-19 02:05 AM https://www.ebay.de/itm/Turbo-pump-V200a-Pumpe-Varian-Turbomolekularpumpe/173729696419 11-Jan-19 02:05 AM https://www.ebay-kleinanzeigen.de/s-anzeige/glaskapillare-glasroehren-glasrohre-laborglas-quarzglasrohr/133216855-282-3146 11-Jan-19 02:38 AM is there a cheap-ish source for sem filament? @AdamMcCombs 11-Jan-19 02:38 AM ah, I found these https://www.ebay.de/itm/AGAR-A054-Filamente-Wolfram-Kathode-fur-Cambridge-LEO-REM-10-Stck/263743695804 11-Jan-19 04:34 AM want to build your own x-ray tube? 11-Jan-19 04:34 AM A054 is what i'm using as well 11-Jan-19 09:37 AM https://www.ebay.de/itm/Glasrohr-BOROSILIKAT-Glas-10-Stück/113491713336 11-Jan-19 09:37 AM cheap glass tubes 11-Jan-19 08:36 PM https://www.ebay.com/itm/7-x-7-x-18-Vacuum-Chamber-SYS175218020C/202563563932 https://www.ebay.com/itm/10-x-7-x-7-Vacuum-Chamber-SL-3LTK-CLR/292915390160 11-Jan-19 08:36 PM Interesting things 11-Jan-19 08:36 PM https://www.ebay.com/itm/Kurt-J-Lesker-Model-SA0100PVQF-Standard-Angle-Inline-Valve/292915481269 11-Jan-19 08:36 PM This guy has a TON of stuff 11-Jan-19 08:36 PM https://www.ebay.com/itm/Kurt-J-Lesker-Model-SA0100PVQF-Standard-Angle-Inline-Valve/292915481065 https://www.ebay.com/itm/Kurt-J-Lesker-Vacuum-Gauge-Tube-Thermocouple-KJL-912001-0101/292915480516 11-Jan-19 08:36 PM He always seems to 11-Jan-19 09:09 PM Generally not HV related 11-Jan-19 09:09 PM but sometimes I guess 12-Jan-19 02:11 AM Woah! 12-Jan-19 02:11 AM Iprefer the other ones we bought. 16-Jan-19 08:27 PM https://www.ebay.com/itm/Perkin-Elmer-2400-Sputtering-System-2400-8SA-Sputter-Coater/390626166733 16-Jan-19 08:27 PM this thing is magnificent 16-Jan-19 08:28 PM What kind of sputtering system has a cryo pump? 16-Jan-19 08:28 PM Thats one hell of a low contamination system 16-Jan-19 08:29 PM yea... was wondering that myself lol 16-Jan-19 08:29 PM but its a beautiful chamber either way 16-Jan-19 08:29 PM For real 16-Jan-19 08:29 PM The sputter controls on top of the chamber is a nice touch 16-Jan-19 08:29 PM Those vacuum caps 16-Jan-19 08:29 PM Just everything about it 16-Jan-19 08:34 PM I'd love to get my hands on one of these Micro-RIE systems... 16-Jan-19 08:34 PM https://www.ebay.com/itm/G152611-Technics-Micro-RIE-Series-800-Reactive-Ion-Etching-System-w-DES-210/292696460962 16-Jan-19 08:34 PM https://www.ebay.com/itm/PlasmaTherm-PK-2460-PE-RIE-Reactive-Ion-Etcher-System/332350284795 16-Jan-19 08:34 PM OH GOD 16-Jan-19 08:34 PM it has an IBM sticker on it... 16-Jan-19 08:37 PM Oh no 16-Jan-19 08:37 PM but 750 bucks.... hrmmmm 16-Jan-19 08:37 PM Make offer? 16-Jan-19 08:39 PM that too... 16-Jan-19 08:39 PM though jeeezz... 16-Jan-19 08:39 PM seems overly complex considering the micro-RIE lol 16-Jan-19 08:39 PM yeah absolutly 16-Jan-19 08:39 PM I mean you can get away with something like a plasma asher and its more versatile 16-Jan-19 08:39 PM For some stuff 16-Jan-19 08:41 PM well I wanted an RIE for silicon etch 16-Jan-19 08:41 PM actually hadn't heard of plasma ashing... but I presume because it doesn't apply to silicon etching? 16-Jan-19 08:41 PM ah nope I'm wrong :) 16-Jan-19 08:41 PM used for removing photoresist apparently 16-Jan-19 08:42 PM Yeah it works for some stuff 16-Jan-19 08:43 PM moving to general :) 17-Jan-19 06:39 AM Does anyone here have ITO (sputter targets) or similiar? 18-Jan-19 10:51 AM Nope, Dirac. 18-Jan-19 10:51 AM REQUEST: Does anyone have a DEAD Mobius 2 camera I can have? I need to take volumetric measurements from it for a helmet cam project. 20-Jan-19 03:47 AM So this thing is in rough shape but it looks complete https://www.ebay.com/itm/ISI-Super-IIIA-Scanning-Electron-Microscope-Local-Pickup-Only-Naperville-IL/401690189506?hash=item5d8699dec2:g:P5kAAOSw9~Rb46tW:rk:4:pf:0 20-Jan-19 03:47 AM The SE detector is broken off but I have not yet seen a ISI SIIIA that that hasnt happened too. The seller will probably be willing to make a deal for both scopes they have listed 20-Jan-19 03:47 AM It also has a Robinson BSE which might work. 20-Jan-19 03:47 AM The ISI super IIIA was my first SEM and is a great scope to learn on 20-Jan-19 03:47 AM Its also got a 24 pin electrical feedthrough built in which i'm sure you can find a good use for. 20-Jan-19 03:47 AM Basically I don't want to see this go to scrap 20-Jan-19 03:47 AM And the schematics and manuals for it are online https://microwiki.org/media/isi/super_iiia/ 20-Jan-19 03:47 AM Also look at https://web.archive.org/web/20170825010957/http://members.tm.net/lapointe2/scanning_electron_microscope.html 20-Jan-19 06:43 AM cries a bit 20-Jan-19 08:19 AM it's cute 20-Jan-19 08:28 AM i want it... who wants to carry it over the ocean and deliver it to my doorstep? 20-Jan-19 08:40 AM @Pan Da ask michael manousakis with his old sowjet plane 20-Jan-19 08:45 AM KATASTROPHE! 20-Jan-19 08:46 AM Katzenarschtrophäe! 20-Jan-19 11:45 AM too bad those are out in Illinois, but I'd still love to get that scope near me when I can get the chance... 20-Jan-19 03:41 PM So if no one wants this scope im going to post it on eBay... 20-Jan-19 03:41 PM *twitter 21-Jan-19 09:40 PM My parents live near Naperville, IL... 21-Jan-19 09:40 PM Well it's on wheels 21-Jan-19 09:50 PM How many broken SEMs does one man really need? 21-Jan-19 09:52 PM Well 21-Jan-19 09:52 PM Several seems like a nice number 24-Jan-19 06:09 AM https://www.govdeals.com/index.cfm?fa=Main.Item&itemid=5613&acctid=127 24-Jan-19 06:40 AM Oh man a 733 that's one hell of an odd system 24-Jan-19 06:40 AM The thing uses high pressure cooling oil to get the optics small enough to enable the take off angle and clearances for the WDS spectrometers 24-Jan-19 06:40 AM It's mostly 35C/100CX/1200 Mrk I generation hardware, but it's an odd combo of all 3. Very specialized but very powerful. Not many still in service today and largely replaced with new jeol supper probes and camaka systems 24-Jan-19 02:47 PM jeez thats one hell of a scope 24-Jan-19 02:47 PM hope someone saves it 24-Jan-19 02:50 PM Oh, BTW: I'm going to order 10 Hornets some time in the next few weeks, price will be 30€ or less per piece, that includes shipping and customs 24-Jan-19 02:50 PM I'm in germany, anyone here (preferably EU) want some? 24-Jan-19 03:02 PM Be careful, they can sting. 24-Jan-19 03:03 PM not as much as my... 24-Jan-19 03:03 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190125_000323-C5AEF.jpg 24-Jan-19 03:31 PM touché 24-Jan-19 05:38 PM yeah, too bad that Jeol is on the east coast 24-Jan-19 05:38 PM I'd like to know more about that high pressure cooling oil though 24-Jan-19 05:39 PM Other than it's a pain and it leaks? 24-Jan-19 05:39 PM I mean, what pressure, is it just a coolant jacket, radiator, and a pump? 24-Jan-19 05:39 PM what exactly does it cool... 24-Jan-19 05:39 PM to what temp 24-Jan-19 05:39 PM instead of radiator is it a heat pump, etc 24-Jan-19 05:39 PM which stillr equires a radiator in some fashion 24-Jan-19 05:39 PM what kinda oil 24-Jan-19 05:39 PM ...that's about all I got in my head thus far 24-Jan-19 05:41 PM It has a heat exchanger thats chilled with the water cooler. 24-Jan-19 05:41 PM It's cooling the objective lens, the lens is so small with so few windings that the current and voltage has to be very high so they have to use high pressure oil instead 24-Jan-19 05:43 PM heats up that fast? 24-Jan-19 05:43 PM Very 24-Jan-19 05:43 PM interesting 24-Jan-19 05:44 PM Talking (from memory) 100-200 volts at several amps in a very small space 24-Jan-19 05:45 PM what gauge of wire are we talking? 24-Jan-19 05:45 PM if that is the proper term or not 24-Jan-19 05:46 PM Somewhere smaller than you would want to use 24-Jan-19 05:46 PM Getting that many windings in a small space is hard 24-Jan-19 05:46 PM I don't have a spec for the 733 24-Jan-19 05:47 PM just interested in focusing eletromagnet data, as I am not where near close to figuring out such a thing, but was curious on ballpark figures, I guess 24-Jan-19 05:48 PM http://www.jepspectro.com/htm/jeol733-repair.htm 24-Jan-19 05:48 PM Yeah I don't have that for the 733 24-Jan-19 05:48 PM It's also dependant on the poll piece 25-Jan-19 05:34 AM https://www.ebay.com/itm/202558356330 25-Jan-19 03:24 PM @niklas I'll ask for one kit ^^ 26-Jan-19 08:55 AM Yes I will also take one kit! 28-Jan-19 03:31 PM https://www.ebay.com/itm/Ultra-High-Vacuum-Spherical-4-Way-Cross-6-CF-Flanges-MDC-UHV-4-Way-Cross/173721741766 28-Jan-19 03:31 PM Probably be-able to make an offer on this for a 4 way warrented to seal on all knife edges... Pretty good starting point for a chamber I'd think. 28-Jan-19 03:31 PM But I'm a noob here so let others comment on that idea before buying :) 28-Jan-19 07:03 PM That's a great chamber for vacuum systems for sure. My propulsion and accelerator chambers are based on 6" conflat. For price point comparison, I got my 3 way 6" tee for about $200. 4 way crosses definitely are more, but you should see if you can negotiate the price down. 28-Jan-19 08:17 PM wait nvm, I actually negotiated the 6" tee down to $140, excellent condition as well. So yeah, you should definitely try to get that cheaper. 28-Jan-19 09:43 PM true wow... I forgot I got my straight through 8" conflat with a 6" T off with 3x 2.75" connections for 75 bucks 28-Jan-19 09:43 PM I guess after you spend like 400 on a turbo few hundred dollar conflats look cheap haha 28-Jan-19 09:43 PM but yea definitely better deals to be had, but for something tested and warrantied, something you normally don't get... its a consideration for someone who wants no fuss... I got lucky that the guy that sold my unit made a mini crate for it out of plywood... so it was super safe. some people may not do that :) 28-Jan-19 10:53 PM Nice find! 30-Jan-19 05:51 AM I got a final quote for the hornet gauges, will be 23€ incl shipping and customs to me. 30-Jan-19 05:51 AM I'll order 10 pcs, if anyone (in the EU) wants one DM me 06-Feb-19 12:48 PM if somebody in the US needs a very powerful rotary vane pump: 06-Feb-19 12:48 PM https://www.ebay.com/itm/181000685774 06-Feb-19 12:48 PM there even is a gasket kit right now: https://www.ebay.de/itm/252442255590 06-Feb-19 01:05 PM its free local pickup CA only though unfortunately 06-Feb-19 01:05 PM as a note 06-Feb-19 01:05 PM oh, thanks. didn't see that 06-Feb-19 07:39 PM screw that.. this kid (he might be out of highschool by now) that I got my Alcatel + turbo pump and controller package from has TESTED with pictures showing the gauge, Edwards 12.. https://www.ebay.com/itm/TESTED-Edwards-E2M12-Rotary-Vane-Vacuum-Pump/173780228913?hash=item28761bdb31:g:sBYAAOSwX6RcJUV5:rk:5:pf:0 06-Feb-19 07:39 PM 5 microns 06-Feb-19 07:39 PM he has some interesting goodies, incl a mass spec for 50k.. free shipping 06-Feb-19 07:39 PM oh, free shipping on the edwards 06-Feb-19 07:39 PM someone should def nab that, btw 06-Feb-19 07:39 PM he has stuff going up all the time, you should subscribe to him 06-Feb-19 07:39 PM he made a fusor, btw 06-Feb-19 07:39 PM not sure what he;'s into now though 06-Feb-19 07:39 PM oh, make an offer, available 06-Feb-19 07:39 PM his packing was decent enough, if I recall 06-Feb-19 07:39 PM I believe his father works for a lab and they get a bunch of stuff 06-Feb-19 08:18 PM I just hope my 250? dollar RV12 holds up well :) 06-Feb-19 08:18 PM plans to rebuild it? 06-Feb-19 08:18 PM and what is it pulling? 06-Feb-19 08:29 PM I haven't tested it yet, I am getting flushing fluid and new oil from LDS tomorrow, so we will see I suppose 06-Feb-19 08:29 PM I'll need to wire up a little circuit for the loadlock 07-Feb-19 10:25 AM wow you pay that much for rotary pumps in USA? 07-Feb-19 10:25 AM You can get better deals 07-Feb-19 10:28 AM okay 07-Feb-19 10:28 AM you can get pretty good pumps for <150€ in Germany without any problems 07-Feb-19 10:28 AM I think for my Tri stage Vacuubrand that made 5x10^-4mbar until last weekend I payed 80€ 07-Feb-19 10:57 AM cries Mine only achieves 33microns and costed 185€ 07-Feb-19 11:01 AM good enough for most high vacuum pumps 07-Feb-19 11:01 AM modern TMPs work up to like 0.2 mbar 07-Feb-19 12:27 PM Yea I mean there are way better deals on just any old rotary pumps I got an acatel for like 70 bucks 07-Feb-19 12:27 PM but for an Edwards RV12... those go for a bit more normally 07-Feb-19 12:34 PM the whole idea behind a lot of his equipment is it is fully tested and you can see what vacuum it actually pulls.. there is no question on what it can attain 07-Feb-19 12:34 PM most auctions are as-is questionable 07-Feb-19 12:51 PM Oh sure. I'm not arguing that. I think a lot of us here are within the... going to spend 100 bucks and risk it budget range though :) 07-Feb-19 01:02 PM hah, done that a few times where it is worth it to just pay the man 07-Feb-19 01:02 PM I am sorta in that situation for the bigger lathe and jig borer that I am looking at though 07-Feb-19 01:02 PM zero testing and only pics available 07-Feb-19 01:02 PM and much more than $100.. in fact, 8x that just for shipping.. each item! 07-Feb-19 01:02 PM k, time to head into school to turn a few things 07-Feb-19 01:50 PM @GigaSquirrel make that x100 07-Feb-19 01:50 PM https://www.idealvac.com/files/manuals/TurboPump%20TMH%20TMU%20064%20065.pdf 07-Feb-19 01:50 PM The turbopump that was given to me recently operates at up to 18mbar forepressure 07-Feb-19 01:50 PM actually, the forepump is "only" a membrane pump that is rated for 5mbar final pressure 07-Feb-19 01:50 PM so yeah if you gonna use a turbopum you can probably use a fridge compressor which is for free 07-Feb-19 01:56 PM Yeah the pheiffer prepumps at work are membrane pumps 07-Feb-19 02:40 PM Oh... 07-Feb-19 03:03 PM so yeah, you only need low foreline pressure if you got an old TMP / oildiff or want to go very low on the high vac side 07-Feb-19 04:53 PM Even on more modern TMPs having a high backing pressure or gas load means you are going to have more cooling requirements 07-Feb-19 06:42 PM define: old 08-Feb-19 01:00 AM the newer TMPs (at least the ones from pfeiffer) have a cylindrical Stage (of which i can't remember the name) that enables 'high pressure' operation 08-Feb-19 01:00 AM since like 5 to 10 years? 08-Feb-19 01:06 AM more like 30 years, but their pumping speed still decreases a lot if the foreline pressure is high 08-Feb-19 01:07 AM oh, that long? 08-Feb-19 01:07 AM don't know, I was at analytica fair 6 or 8 years ago where the rep sold this as a great new thing 08-Feb-19 01:12 AM Edwards still sells some that don't like high backing. Makes sense of you don't need it 08-Feb-19 01:24 AM pumpin 08-Feb-19 01:24 AM for fast pumping right? 08-Feb-19 01:26 AM Cost 08-Feb-19 01:27 AM time is money 08-Feb-19 01:27 AM Don't need part of a rotor or don't need that good of thermal performance why pay for it? 08-Feb-19 01:28 AM i mean you dont want to wait so long for spin up of tmps 08-Feb-19 01:28 AM and the bottleneck are the flanges? 08-Feb-19 01:28 AM turbo makes it faster 08-Feb-19 01:28 AM what i want to say ... of course you want your turbos to kuck in early? 08-Feb-19 01:28 AM kick 08-Feb-19 01:34 AM btw, let's move this to #general 08-Feb-19 01:34 AM ok 08-Feb-19 11:22 AM Does anyone have a KF25 *50mm tube that wants to cheaply part with it? 08-Feb-19 11:24 AM The pheiffer TMP's we have at work can go from ATM to reasonable vacuum, except you need prevacuum or they overheat. 08-Feb-19 11:24 AM And if the prepumps get condensation there's gona be too much backpressure to get down to 10^-7mBar 08-Feb-19 11:24 AM or better 09-Feb-19 09:54 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_4075-FEC0A.JPG 09-Feb-19 09:54 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_4076-AAF7B.JPG 09-Feb-19 09:54 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_4077-6A8D8.JPG 09-Feb-19 09:54 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_4078-C6B9E.JPG 09-Feb-19 09:54 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_4079-541A4.JPG 09-Feb-19 09:54 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_4080-7BB69.JPG 09-Feb-19 09:54 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_4081-88171.JPG 09-Feb-19 09:54 AM Guy on eBay I've been buying stuff from has all this for sale. As far as I know its all basically make offer... I've gotten stuff from him for reasonable prices. Hes been quick to ship. 09-Feb-19 09:54 AM https://www.ebay.com/usr/surplus2012?ul_noapp=true 09-Feb-19 09:54 AM this is his account. 09-Feb-19 10:32 AM He also has a good looking 4.5" viewport 09-Feb-19 10:32 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_4252-04AA4.JPG 09-Feb-19 10:32 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_4253-2B542.JPG 09-Feb-19 10:32 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_4254-335F3.JPG 10-Feb-19 12:06 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20190210_090400-C30CA.jpg 10-Feb-19 12:06 AM I see you like viewports, if anyone has a use for this one let me know! I got it a few years ago really cheap on ebay but don't need it. I think it could be new and un-used. 10-Feb-19 12:13 AM CF 6? 10-Feb-19 12:38 AM CF DN100 10-Feb-19 09:59 AM So yes its CF 6" OD which is DN100CF 10-Feb-19 10:13 AM @Conmega I'm confused. When I follow that link it says he has only 8 items on sale. 10-Feb-19 10:14 AM @robamacl he's been DMing me about stuff... I make an offer, he puts it up for sale and I buy it 10-Feb-19 10:14 AM I guess he prefers to have a sale lined up instead of just posting stuff randomly. I mentioned I told others he had some stuff. So if you want to DM him just DM him about a random item to be-able to send him a message and mention you were sent there by connorwk or whatever. 10-Feb-19 10:14 AM Ah jeez he just sent me like 10 more photos of Conflat 10-Feb-19 10:14 AM uhggg my wallet 10-Feb-19 10:14 AM XD 10-Feb-19 10:14 AM Looks like a straight of 8", straight of 6", 6" to 3.33"??? 10-Feb-19 10:14 AM https://i.ebayimg.com/images/g/cSIAAOSwGelcYD13/s-l1600.jpg 10-Feb-19 10:14 AM thats a fun size 10-Feb-19 10:14 AM https://i.ebayimg.com/images/g/FQkAAOSwAPxcYD1c/s-l1600.jpg 10-Feb-19 10:14 AM weird little adapter 10-Feb-19 10:14 AM If it is 3.33" though... Then you could make use of this beast: https://www.ebay.com/itm/MDC-Varian-8-Conflat-Multi-Port-High-Vacuum-Chamber-Stainless-Steel-UHV-CFF-CF/223318597611 10-Feb-19 10:14 AM its useless because of ONE 3.33" port that I can't find anything for on eBay 10-Feb-19 10:26 AM Maybe he just has lots of stuff and doesn't want to go thru the bother of listing it all. It does seem that a lot of surplus vendors on eBay list all kinds of crap at high prices such that I imagine 99% of it never sells, but one guy who does really want that pcb from an obsolete machine can pay for the labor of making a lot of listings. Yet it seems that eBay formerly, under the auction model, encouraged selling the stuff that you "don't know what it is" at low prices, movIng inventory. But I guess if the item is esoteric enough then you can sit on the inventory until a high-value customer comes along. IDK 10-Feb-19 10:28 AM yea 10-Feb-19 10:30 AM Have you looked at LDS vacuum for the 3.3 CF adapter? They are good for filling in the plumbing bits at reasonable prices. 10-Feb-19 10:31 AM figured it would be like... well over 100 dollars, a price that is quite high in my scrounging parts opinion :) 10-Feb-19 10:31 AM but yea they would probably have it? 10-Feb-19 10:31 AM though 3.33" seems like the odd size out... everyone seems to do 2.75" or 4.5" 10-Feb-19 10:32 AM I don't know CF, so I don't know how obscure it is, but they do have CF components. 10-Feb-19 10:33 AM ah ok they do have a 3.38" blank, suppose thats what it is... and its 38 bucks... ok... 10-Feb-19 10:33 AM suppose I grossly overestimated opps haha 10-Feb-19 10:33 AM thank you XD 10-Feb-19 10:33 AM though that massive conflat piece I'd only get if I could get it for like... hundreds not that 1000 price just oof 10-Feb-19 10:33 AM though this bad boy just showed up too... 10-Feb-19 10:33 AM https://www.ebay.com/itm/Varian-9-port-Vacuum-Chamber-ConFlat-4x8-1x6-1x4-5-3x2-75-Stainless/153372965398 11-Feb-19 02:03 PM @Conmega#381 keep scrounging... 11-Feb-19 03:33 PM is no longer interested in any buy-able vacuum chambers 11-Feb-19 04:25 PM XD 14-Feb-19 06:05 AM https://www.ebay.com/itm/4-5-HASTINGS-VACUUM-VIEWPORT/372598196782 14-Feb-19 06:05 AM 4.5" Viewport from the guy I've been buying a ton of stuff from. His stuff has been of good quality so far for me. 14-Feb-19 02:17 PM Anyone interested in a NIM Timer / scaler with nixies? 14-Feb-19 02:17 PM Pics incoming 14-Feb-19 02:18 PM no thanks, one of them in chat is enough for me :3 14-Feb-19 02:19 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190214_231333-AC6A3.jpg 14-Feb-19 02:19 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190214_231641-62F1A.jpg 14-Feb-19 02:19 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190214_231547-310FE.jpg 14-Feb-19 02:19 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190214_231228-1D871.jpg 14-Feb-19 02:19 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190214_231419-3324B.jpg 14-Feb-19 02:19 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190214_231401-5FB19.jpg 14-Feb-19 02:19 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190214_231435-BE1AB.jpg 14-Feb-19 02:19 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190214_231202-D37B4.jpg 14-Feb-19 02:19 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190214_231500-89651.jpg 14-Feb-19 02:19 PM It's broken, but it might just be the frontend, since the gate open and some MHz test output work as they should 14-Feb-19 02:19 PM 35€+ shipping and it can be yours! 14-Feb-19 07:30 PM @GigaSquirrel wow that's a gorgeous piece of kit 14-Feb-19 10:33 PM Ohdammit 14-Feb-19 10:33 PM tries to sell kidney to passerby 15-Feb-19 03:10 AM 35€ for a kidney? If you can't get more you should visit your doctor 15-Feb-19 03:13 AM XDDD 15-Feb-19 03:13 AM AND shipping. 15-Feb-19 03:13 AM It's just a sexy piece of kit, no matter what. 15-Feb-19 03:13 AM At some point I have to have a nixie display power supply. 15-Feb-19 03:15 AM just get a nim bin and start with nuclear physics! 15-Feb-19 03:23 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-033D5.png 15-Feb-19 03:23 AM (Honeamise no tsubasa) 15-Feb-19 03:23 AM nim bin? 15-Feb-19 03:27 AM the thing that takes those modules 15-Feb-19 03:27 AM ah 15-Feb-19 03:27 AM I guess I'll just build a nixie voltmeter and ammeter and put everything in a nice vintageish looking box. 15-Feb-19 03:29 AM nixies nixie voltmeter 15-Feb-19 03:31 AM Yeah. A sight to behold. 15-Feb-19 03:31 AM XDDDD 15-Feb-19 04:04 AM @GigaSquirrel eww a berthold, maybe thats why it's broken? 15-Feb-19 04:04 AM it decided to suicide itself 15-Feb-19 04:04 AM I presume you have no (service)manual for it? 15-Feb-19 04:17 AM guess what 15-Feb-19 04:34 AM If I could be bothered to repair it I would not sell it 15-Feb-19 04:34 AM XDDDD 15-Feb-19 04:34 AM SPOILER 15-Feb-19 04:40 AM oh gawd 16-Feb-19 12:10 AM For sale: SEM and operator of questionable sanity 16-Feb-19 12:10 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190216_015109-BE93E.jpg 16-Feb-19 12:39 PM Anyone in Germany got some KF16 / 10 adapter rings or some KF16 / 10 outside (?) center rings? 17-Feb-19 11:50 AM https://www.ebay.de/itm/153373349257 24-Feb-19 06:04 AM anyone know where to get type s thermocouples? 24-Feb-19 01:15 PM https://www.govdeals.com/index.cfm?fa=Main.Item&itemid=2873&acctid=3954 24-Feb-19 01:49 PM What is hanging off the side of the console in the first pic? Looks like hair... 24-Feb-19 05:01 PM jeeezzz thats a CRAZY system 24-Feb-19 05:01 PM can't believe its starting that low 24-Feb-19 05:01 PM will probably go mad high though 24-Feb-19 05:01 PM @AdamMcCombs 24-Feb-19 05:01 PM Eh 24-Feb-19 05:01 PM Not really 24-Feb-19 05:01 PM oh? 24-Feb-19 05:01 PM looks fairly modern 25-Feb-19 01:38 AM woah 25-Feb-19 01:38 AM want ... such ... a ... thing 25-Feb-19 10:52 PM Any chance anyone has a fluke 289 they are looking to sell? 26-Feb-19 12:26 AM is there a particular feature of the 289 you need? 26-Feb-19 12:29 AM Yeah. Data logging/review, rapid peak detection, very sensitive ohm range, and low impedance voltage 26-Feb-19 12:30 AM The review is mostly garbage on the meter itself, the peak and data logging you can get on a 189 IIRC 26-Feb-19 12:30 AM I know I can do a lot with other tools but I have limited space in my field kit 26-Feb-19 12:30 AM I have a rather sizeable collection of flukes, the 289 only comes out if I really need it, generally I use the 189 26-Feb-19 12:31 AM You mean 87V? 26-Feb-19 12:31 AM I don't have an 87 26-Feb-19 12:31 AM Ah there we go 26-Feb-19 12:31 AM I had an original 87 at one point but I sold it because of it's limited use 26-Feb-19 12:31 AM I have 2 45's, a 336 clamp meter I think, 179, 189, 289, and a handful of clamp probes for the normal meters 26-Feb-19 12:33 AM Yeah 189 doesn't have the specs for resistance I need 26-Feb-19 12:33 AM damn 26-Feb-19 12:33 AM If it did I would go with it 26-Feb-19 12:33 AM I do a lot of ground loop/coil health stuff 26-Feb-19 12:34 AM the 289 just tends to be a pain in the ass, between bootup time, menu navigation, and just chunky size and burning through batteries 26-Feb-19 12:35 AM I'm also trying to not carry my o scope with me anymore, and the 289 duplicates a lot of it 26-Feb-19 12:35 AM I could turn the 189 on, take multiple measurements, and turn the meter off before the 289 boots 26-Feb-19 12:35 AM the graph view on the 289 is absolutely USELESS 26-Feb-19 12:35 AM do /not/ buy it for the graph view 26-Feb-19 12:36 AM When I'm setup at a scope I'm not turning it on and off all the time 26-Feb-19 12:36 AM Why? 26-Feb-19 12:36 AM I have to look at 15 minute trends all the time 26-Feb-19 12:36 AM it's garbage resolution and detail 26-Feb-19 12:36 AM Really? anti-swear bot? 26-Feb-19 08:34 AM beep boop beep 26-Feb-19 01:00 PM https://www.ebay.com/itm/2-75-Conflat-Flange-Cap-with-Gamma-IGP/123641599272 26-Feb-19 01:00 PM Adorable IGP 26-Feb-19 01:00 PM wow I just realized they have 4 of them 26-Feb-19 01:00 PM https://www.ebay.com/itm/Gamma-IGP-with-1-25-Conflat-Flange/123641613926 26-Feb-19 01:00 PM they also have a slightly bigger one 26-Feb-19 01:00 PM these are probably worn out and or not worth it, but they are so cute 27-Feb-19 01:02 AM anyone here have a GIS (gas injection system) for sale, or ideas/plans/articles on how to DIY one? 27-Feb-19 01:03 AM How much are you looking to spend? One of my vendors remanufactures them but they aren't the cheapest option... 27-Feb-19 01:12 AM not really in need of it at the moment, but would like to get away with cheaper than the ebay options 27-Feb-19 01:12 AM I've seen $800 for who-knows-what-condition and what-might-be-missing 27-Feb-19 01:12 AM up to $7500 for working and refurbed 27-Feb-19 01:12 AM Do you have any right now? 27-Feb-19 01:13 AM if I could jam a soldering iron with an insulin needle and get something to work for a few hundred, and document the DIY method, I'd prefer that 27-Feb-19 01:13 AM yeah one, for carbon, not sure what the actual source chemistry is 27-Feb-19 01:13 AM What are you looking for? Pt? 27-Feb-19 01:13 AM ideally 27-Feb-19 01:14 AM Depending on source config you might be able to retrofit it for pt 27-Feb-19 01:14 AM goal is to use the contacts for biochemistry electrodes, an Pt is pretty standard in biology stuff 27-Feb-19 01:14 AM yeah was thinking that 27-Feb-19 01:14 AM haven't uncrated the FIB I have since purchasing, should be doing that in the next 2 weeks 27-Feb-19 01:14 AM then I'll know more 27-Feb-19 01:14 AM btw digshadow/JohnMcmaster said I should invite you to the uncrating "party" 27-Feb-19 01:14 AM (I'm in Hillsboro OR) 27-Feb-19 01:19 AM Yeah i figured 27-Feb-19 01:19 AM only so many people i know with a t200 and a fib... 27-Feb-19 01:25 AM oh, can you get FEI FIB 200 parts? 27-Feb-19 01:25 AM Yeah 27-Feb-19 01:25 AM I have been working to repair one lately 27-Feb-19 01:25 AM I can get any fei parts 27-Feb-19 01:25 AM getting a bad REF card diagnostic 27-Feb-19 01:25 AM and failing MDAC diagnostics too 27-Feb-19 01:25 AM the unit will image 27-Feb-19 01:25 AM but it's all weird and twisted looking, except for a portion in the very center 27-Feb-19 01:25 AM local tech brought another REF card, but he wasn't sure it was OK... we swapped, no change... we swapped deflection amps, no change in image 27-Feb-19 01:25 AM (or diags) 27-Feb-19 01:26 AM Just let me know what you want and I can see what I can do. If im on site I can sometimes get loaner cards as well 27-Feb-19 01:27 AM schematics that aren't for an XL30 SEM would be great to have 27-Feb-19 01:27 AM but that's all we got in the shop 28-Feb-19 01:56 PM https://www.ebay.com/itm/MDC-6-In-CONFLAT/323705838635 28-Feb-19 01:56 PM if anyone needs some Conflat 6" blanks 28-Feb-19 01:56 PM 35 bucks starting bid ending soon 01-Mar-19 01:08 PM https://www.ebay.com/itm/Edwards-Diffstak-100-100mm-Diffusion-Pump-Mass-Spectrometry-MDC-Flange-Excellent/123584309624 01-Mar-19 01:08 PM Nice diffusion pump with conflat! 01-Mar-19 01:08 PM Note you'll likely need to spend probably 100 bucks on pump oil to fill it with once you get it 01-Mar-19 01:08 PM If only I had any money atm uhg 01-Mar-19 02:17 PM Niiiiiiiiice 01-Mar-19 09:42 PM Diff pumps are so bulky, probably more expensive shipping than a used pump costs in many cases 01-Mar-19 09:42 PM I can get diff pumps but I really want to go turbo for fusor use, so much smaller 01-Mar-19 09:42 PM What’s the best way to clean old tarnished SS (304 I guess?) hardware and make it pretty? 01-Mar-19 10:02 PM https://www.ebay.com/itm/Leybold-Inficon-Transpector-XPR-TR100/183249380754 01-Mar-19 10:02 PM This guy has 10 of these guys 01-Mar-19 10:02 PM with make offer... so might be able to get these low enough 01-Mar-19 10:02 PM nice that they have the valve on them too 02-Mar-19 02:07 PM https://www.ebay.com/itm/Vat-Valve-09140-UE24-ADC1-Gate-valve-Doubling-Acting-Pneumatic-w-6-Flange/122760570168 02-Mar-19 02:07 PM mmm 6" gate valves 02-Mar-19 02:07 PM @Applied_Ion 02-Mar-19 02:07 PM Yeah what's up? 02-Mar-19 02:10 PM 6" conflat gate valves :P just figured you might find them interesting 02-Mar-19 02:10 PM I mean they actually aren't horridly priced, they have make offer 02-Mar-19 02:11 PM Oh lol. Yeah that's a really good price for that size for sure 02-Mar-19 02:11 PM I'll probably end up getting one so I can throttle my turbo pump 02-Mar-19 02:11 PM I have that 8" gate valve I'll have for the entrance to my chamber lol 02-Mar-19 02:12 PM Not bad for making a load lock system 02-Mar-19 02:12 PM though with the pneumatically driven for that 6" it would be hard to throttle 02-Mar-19 02:12 PM If it's pneumatic it would only be fully open or closed 02-Mar-19 02:12 PM Unless you removed the pneumatic part and modified it 02-Mar-19 02:12 PM but yea, either way casually keeping an eye out for conflat gate valves :P 02-Mar-19 02:13 PM Wait 02-Mar-19 02:13 PM I've got a massive gate valve 02-Mar-19 02:13 PM With a butterfly valve attached 02-Mar-19 02:13 PM yea I could also use it to gate off the turbo and vent the rest of the chamber so I don't have to spin down the turbo 02-Mar-19 02:13 PM what? 02-Mar-19 02:13 PM gate or butterfly? 02-Mar-19 02:13 PM It's huge 02-Mar-19 02:13 PM or both? .-. 02-Mar-19 02:13 PM Both 02-Mar-19 02:13 PM picturessss 02-Mar-19 02:14 PM I actually don't need it for my stuff, been looking to sell it 02-Mar-19 02:14 PM I can post pictures 02-Mar-19 02:14 PM It's not conflat though 02-Mar-19 02:14 PM oh... rip 02-Mar-19 02:14 PM I really need a lathe XD 02-Mar-19 02:17 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20180526_151550-D041E.jpg 02-Mar-19 02:17 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20180526_151502-C2EAB.jpg 02-Mar-19 02:17 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20180526_151604-1A1D6.jpg 02-Mar-19 02:17 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20180526_151737-08E4D.jpg 02-Mar-19 02:18 PM oh thats pretty cool 02-Mar-19 02:18 PM thats exactly what you'd need for a turbo, gate for closeoff and butterfly for throttling 02-Mar-19 02:18 PM its not conflat but is it like ASA or ISO? 02-Mar-19 02:18 PM the side with the butterfly looks like it could be ISO 02-Mar-19 02:18 PM mind getting some dimensions on that? if thats the right size I might totally buy that off you for my turbo 02-Mar-19 02:18 PM because that would be perfect 02-Mar-19 02:20 PM The valve is 11" ASA 02-Mar-19 02:20 PM Tge butterfly part is different 02-Mar-19 02:20 PM I can send you a CAD model if you want 02-Mar-19 02:20 PM I made a model a while ago 02-Mar-19 02:21 PM sure! 02-Mar-19 02:22 PM Any file format you prefer? 02-Mar-19 02:22 PM I'm exporting from fusion 360 now 02-Mar-19 02:22 PM It's a simplified model, but should give you all the major dimensions 02-Mar-19 02:27 PM uhm, I always used to use inventor I guess just fusion 360 or whatever should be fine though since I guess I'll have to install something again 02-Mar-19 02:28 PM @Conmega here is an .f3d file and .step file of the valve combo 02-Mar-19 02:28 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/ASA_11in_Gate_Valve_with_9in_Butterlfy_Val-00E0D.f3d 02-Mar-19 02:28 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/ASA_11in_Gate_Valve_with_9in_Butterlfy_Val-9B5C2.step 02-Mar-19 02:29 PM nice thanks! 02-Mar-19 02:41 PM No problem! I will also need to grab that 6" tee from you at some point, maybe drive down during the weekend and also check out that parts shop you posted about 02-Mar-19 02:43 PM yea totally 02-Mar-19 02:43 PM Just let me know, your always welcome over 02-Mar-19 02:43 PM hopefully on a weekend where the SEM is up and running too so you can play with that :) 02-Mar-19 02:47 PM That would be awesome! 02-Mar-19 02:47 PM lets move to general or somethin btw 02-Mar-19 08:55 PM Living in Australia is horrible, nobody sells any surplus or is cool to meet up with. And shipping kilos of steel internationally is a killer. 02-Mar-19 08:57 PM ah your in Ausi land yea the US definitely has better surplus for a lot of this stuff. There are surely like minded people in Aus, its just a smaller population so it seems like there is no-one 02-Mar-19 08:57 PM check some of the larger forums, like the fusor forums maybe? 03-Mar-19 12:26 AM @a_quiet_scientist I totally feel you /from southern spain/ 03-Mar-19 01:13 AM @Conmega I was just looking at an RGA yesterday for an ALD machine... can you summarize what makes them difference from a detector on a GC/MS system, etc? 03-Mar-19 10:30 AM @a_quiet_scientist I wonder where the EEVblog Dave's "secret dumpster" is. So there is some suprlus, just not that evenly distributed. 03-Mar-19 10:30 AM @Nixie At least germany has cheap shipping. 03-Mar-19 10:48 AM @a_quiet_scientist come over to europe/germany, I have a free sofa anytime for likeminded ppl @ everyone 03-Mar-19 10:48 AM also the sofa is actually in my "workshop", so coolnesslvl++ 04-Mar-19 02:49 AM @nmz787 Not really? I'm not too knowledgeable with them :) But if you explain some of those acronyms I might be better able to spew the little info I have lol. Not sure what ALD, GC/MS is. 04-Mar-19 02:55 AM ALD is atomic layer deposition, GC/MS is Gas chromatography / Mass spectrometry 04-Mar-19 02:55 AM @nmz787 All RGAs I know of are just QMS, optimized for <100 AMU 04-Mar-19 02:56 AM ah cool 04-Mar-19 02:56 AM Also, desk toy/heavy repair project 04-Mar-19 02:56 AM https://www.ebay.com/itm/Varian-Turbo-V-550-MacroTorr-Turbo-Molecular-Pump-TMP-PARTS-REPAIR/233146000514 04-Mar-19 02:56 AM cheap enough for a desk toy I guess lol 04-Mar-19 02:59 AM Niiiiice 04-Mar-19 02:59 AM altough it is not small, by any means. 04-Mar-19 02:59 AM (ISO 100 inlet) 04-Mar-19 02:59 AM I definitely have to try to make a miniature KF25 DP. 04-Mar-19 03:02 AM ISO 160 heh... not 100 04-Mar-19 03:02 AM on that Turbo V550 04-Mar-19 03:03 AM even more big, then 04-Mar-19 03:03 AM XDDD 04-Mar-19 03:14 AM 550l/s though I think it is 04-Mar-19 03:14 AM really nice 04-Mar-19 06:33 PM @GigaSquirrel ah interesting, <100 AMU seems pretty good for my possible uses 05-Mar-19 01:18 PM https://www.ebay.com/itm/Zero-Profile-2-75-Viewport-UHV-Stainless-Glass/254025353491 05-Mar-19 01:18 PM relatively cheap 2.75" conflat viewports 05-Mar-19 01:37 PM https://www.ebay.com/itm/new-VAT-valves-series-265-KF16-vacuum-normally-open-valve-qty-available-mks-AMAT/263035830144 05-Mar-19 06:59 PM https://www.ebay.com/itm/VARIAN-L6591-303-ANGLE-SHUTOFF-VACUUM-VALVE-PART-SETUP-2/192836616205 05-Mar-19 06:59 PM decent price for some KF/Conflat bits 05-Mar-19 06:59 PM er shipping is kinda meh actually, but yea maybe if your closer to it the shipping isn't as bad 05-Mar-19 06:59 PM https://www.ebay.com/itm/VARIAN-L6591-303-ANGLE-SHUTOFF-VACUUM-VALVE-PART-SETUP/192831700045 05-Mar-19 06:59 PM seems they have a bit of stuff, maybe combine items and make a bulk purchase from them to save on shipping if they will do that. 07-Mar-19 03:37 PM Viewport seller doesn’t post internationally 07-Mar-19 10:35 PM We should invade US 07-Mar-19 10:35 PM Like "they have cheap vacuum resourcs! " 09-Mar-19 10:40 PM hmm, I can't find a manual for that transpector XPR TR100 09-Mar-19 10:40 PM getting a mass-spec is pretty appealing to me, even though I don't need one /right now/... using it for a deposition system output would definitely be helpful to debug the process actually going on 09-Mar-19 10:40 PM and recently I even read something about using a mass-spec in a FIB on biological samples to get super-resolution (i.e. better than optical) data on the cellular contents... basically as you ablate the cells away you watch the spectra obtained, and correlate that way 10-Mar-19 01:37 AM Kinda like a MALDI but instead of a laser it’s a FIB. That’s interesting. 10-Mar-19 01:55 AM yeah, than you already got the ionisation, but not sure how much fun it will be, interpreting the spectra probably it will just handle it like fingerprints? 10-Mar-19 01:11 PM here's the article https://www.biorxiv.org/content/early/2019/02/22/557603.1.full.pdf 10-Mar-19 01:11 PM "Subcellular localization of drug distribution by super-resolution ion beam imaging" 10-Mar-19 01:11 PM oh, the drug they were interested in, cisplatin, has a platinum center... so that seems like it would make spectra interpretation easier 10-Mar-19 01:13 PM You are going to want a rga just as a leak detector 10-Mar-19 01:15 PM yeah it def seems useful... I think I'd prefer getting one with a manual available, since the link posted earlier doesn't even have a power supply 10-Mar-19 01:15 PM let alone a command dictionary for the RS232 15-Mar-19 03:41 PM Well I was going to get this for my little turbo, but for some reason I thought my little turbo was ISO100 its ISO63 durp so uh yea 15-Mar-19 03:41 PM https://www.ebay.com/itm/ISO-100-Vacuum-Valve/303090792098 15-Mar-19 03:41 PM have fun, 4 bucks buy it now with like 55 bucks shipping, at-least for me 15-Mar-19 03:41 PM reasonable for a nice gate valve IMO 16-Mar-19 01:11 AM "does not ship to spain" 17-Mar-19 01:20 AM https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F254162579819 17-Mar-19 06:06 PM Ok everyone, had a friend of a friend who was thinking about getting this SEM but is laligaging and really just wanted it because it looked cool... Idiot. Anyway, someone save this thing! Its a small SEM, nothing fancy, but its CHEAP! https://hgrinc.com/productDetail/Inspection/Used-Amray-Scanning-Electron-Microscope/09180340005/ 17-Mar-19 06:06 PM You'll need at-least a roughing pump to go with it, along with probably quite a bit of restoration work. But the price is right, and may go lower, they usually drop it to "last chance" before finally just scrapping it. 17-Mar-19 06:06 PM So you could possibly get it as low as 100-150 bucks. 17-Mar-19 06:06 PM @AdamMcCombs blast this on your tweeter if you want 17-Mar-19 08:16 PM https://www.ebay.com/itm/BALZERS-SVB-100P-High-Vacuum-Gate-Valve-ISO-100-4/254166388263 17-Mar-19 08:16 PM Valveeee 17-Mar-19 11:36 PM Whyyyyyyyyyyyyyyyy, why you do this to meeeeeeeeeeee... (Hah, as if it was personal ) 17-Mar-19 11:36 PM Damn, please someone save that scope. 19-Mar-19 02:00 AM @GigaSquirrel do u sell that stuff? ^^ 19-Mar-19 02:03 AM Huh, what stuff? 19-Mar-19 02:04 AM i dunno the pumps from the shower, the cryo heads etc 19-Mar-19 02:04 AM ah xD 19-Mar-19 02:05 AM i mean w t f 19-Mar-19 02:05 AM Thinking about selling some of the tmps, but I'm gonna keep the cold head 19-Mar-19 02:05 AM is that the scrapyard of your university? 19-Mar-19 02:05 AM nope, regular scrapyard 19-Mar-19 02:05 AM where? 19-Mar-19 02:06 AM but I know at least one decon company thst is currently taking apart a synchrotron and scrapping parts of it there 19-Mar-19 02:06 AM munich 19-Mar-19 02:06 AM ah ok 19-Mar-19 02:06 AM if you made prices for your TMPs, will you post the offers here? 19-Mar-19 02:08 AM here before everything else 19-Mar-19 02:08 AM nice 19-Mar-19 02:08 AM and no promises, but 19-Mar-19 02:08 AM I might get my hands on tonnes of measuring and vacuum equipment in the following months 19-Mar-19 02:09 AM for which I will neither have space nor use... 19-Mar-19 09:54 AM perfect! 21-Mar-19 01:12 PM https://www.ebay.com/itm/Varian-Turbo-V-70-9699357S015-Pump-with-9698970M003-Pump-Controller/192863493665 21-Mar-19 01:12 PM If that's a good price to you that looks like a decent Turbo-V70 with controller... If you think thats too high then you could make an offer. 21-Mar-19 01:12 PM I think its fair considering it seems to be in working condition and decent shape. 21-Mar-19 01:12 PM I'd tend to think the 300-400 range is fair for a turbo pump in good shape with a controller, since you can generally find pumps without the controller for 100-200 but then you'll end up either spending 100-200 on a controller or 100~ for some other controller that is cheaper and adapting it, or 100~ in parts and a ton of time trying to make your own controller. 21-Mar-19 03:42 PM Anyone need Phoenix Contact "M12" cables? 21-Mar-19 03:42 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190320_130926-D2150.jpg 21-Mar-19 03:42 PM Used in industrial settings for RS-485. I have been told that it's a defact ostandard. 21-Mar-19 03:42 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190320_130918-B4FE4.jpg 21-Mar-19 03:42 PM Also got Phoenix Contact SAC-3P- 1,5-PUR/M 8FS 21-Mar-19 03:42 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190320_130728-DAC1D.jpg 21-Mar-19 03:42 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190320_130754-9F3B9.jpg 21-Mar-19 03:42 PM https://www.phoenixcontact.com/online/portal/fi/?uri=pxc-oc-itemdetail:pid=1669712&library=fifi&pcck=P-18-01-01&tab=1&selectedCategory=ALL 21-Mar-19 03:42 PM These are likely gona get tossed at work. So I have these in a box on top of a shelf. 21-Mar-19 04:13 PM I want no money for the cables, but only if they are used for something instead of just hoarded or ebayed. 22-Mar-19 01:20 AM https://www.ebay.com/itm/183196537985 22-Mar-19 05:59 AM I may be tired, or ignorant, or both this morning... But what do you want indium lead solder wire for? @GigaSquirrel 22-Mar-19 05:59 AM I have no Idea 22-Mar-19 05:59 AM but it might be a good gasket material 22-Mar-19 06:02 AM very low temperature welds for certain PCB requirements. 22-Mar-19 06:02 AM Also can be used to desolder chips with less heat. 22-Mar-19 06:39 AM Indium solder can be used to directly bond metals to ceramics, since it has the ability to wet ceramics (assuming the surfaces are extremely clean) 22-Mar-19 07:01 AM ohhh 22-Mar-19 07:01 AM very cool 22-Mar-19 07:15 AM oh neat! 22-Mar-19 02:59 PM I have heard of people using indium to solder microwave/millemeterwave mixer diodes 22-Mar-19 02:59 PM It's a better alternative to silver epoxy 22-Mar-19 03:00 PM why not regular solder? 22-Mar-19 03:36 PM I'm guessing heat sensitivity for the components capable of the speed 22-Mar-19 03:37 PM ah, so the indium solder melts at a lower temp? 22-Mar-19 03:37 PM yes, 181°C... 22-Mar-19 03:48 PM neat, I'll have to get some at some point 23-Mar-19 06:13 PM Cheap Conflat 6" to Conflat 4.5" adapter: https://www.ebay.com/itm/Large-6-High-Vacuum-Flange-Fitting/273774867599 25-Mar-19 02:27 AM @Conmega yeah that turbo+controller seems to be a good price... I took off my SEM diffusion pump once, but still need to study up on flanges to know if that's compatible or what to order to convert/adapt. Additionally, I know diff pumps produce less vibration, so that might mean I can get a better image, idk since the roughing pump is also installed inside the SEM cabinet on mine (though I guess I should be able to relocate it outside with some work) 25-Mar-19 02:28 AM For a t300 I wouldn't bother with a turbo 25-Mar-19 02:28 AM There is a lot of things that are going to limit your resolution before the vibrations from the RP do (assuming it's shock mounts are in good shape) 25-Mar-19 02:28 AM If you really want to do a turbo just to get rid of the water cooling that's completely understandable. I would definitely make the interlocks more robust before doing that though 25-Mar-19 02:33 AM yeah I still need to finish the pump+radiator based cooler I was building 25-Mar-19 02:33 AM the FIB seems more promising at this point, but there's space inside my not-so-dirty room for the SEM 25-Mar-19 02:33 AM so I think I'll get around to it sooner than later 25-Mar-19 02:34 AM A t300 really can't be that broken... 25-Mar-19 02:34 AM it's a t200 25-Mar-19 02:34 AM I was told it's probably the raster scan generator 25-Mar-19 02:34 AM so presumably I can just get a DAC or signal generator and send a sawtooth waveform to it 25-Mar-19 02:34 AM someone told me recently the voltage range is probably +-5VDC 25-Mar-19 02:34 AM or maybe just 5 25-Mar-19 02:35 AM It's probably not that hard to just fix I'm guessing? What's wrong with it? 25-Mar-19 02:35 AM Let's move to #general 25-Mar-19 02:36 AM the seller said it had an image, all messed up but stable, changed when the stage was moved though 25-Mar-19 09:35 AM https://www.ebay.com/itm/322558442020 Ever wanted to build your very own scintigraphic detector? 25-Mar-19 01:04 PM https://www.ebay.com/sch/m.html?_odkw=neutron+counter&_ssn=vannadiy&_armrs=1&_osacat=0&_from=R40&_trksid=m570.l1313&_nkw=neutron+counter&_sacat=0 If anyone here needs good neutron detectors, those are the way to go! 25-Mar-19 01:04 PM Many are He3, some corona, some Proportional 25-Mar-19 01:04 PM https://consensus-group.ru/radiation-counters/neutron-counters Here are the datasheets for most 25-Mar-19 01:04 PM Great for everyone building fusors, esp. for first trys He3 is the way to go 25-Mar-19 01:09 PM Awesome! 25-Mar-19 01:10 PM I've already got an SMN-18-1, just bought a SNM-18 25-Mar-19 01:10 PM I'd rather get what's left of @Conmega's beryllium window and some radium paint for my neutron source :P 25-Mar-19 01:11 PM Those are neutron detectors you dope. Not a source 25-Mar-19 01:11 PM + you'd need some pretty strong alpha source for any detectable neutrons 25-Mar-19 01:11 PM Best case efficiency is like 10^-4 neutrons per alpha 25-Mar-19 01:15 PM yeah, but what fun is having a detector if you don't have a source to make it go off :D 25-Mar-19 01:16 PM With neutrons I'd rather have this thing not go off 25-Mar-19 01:16 PM As I said in the introductions channel "I'm just an idiot with an xray machine and little to no fear of radiation." :P 25-Mar-19 01:17 PM My parents always told me to be more active 25-Mar-19 01:17 PM time to activate myself! 25-Mar-19 01:17 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190325_211705-484B1.jpg 25-Mar-19 01:21 PM LOL 25-Mar-19 06:08 PM Are the SNM-18 the He3 ones? Are they noticeably more sensitive than the boron ones ? 26-Mar-19 01:06 AM All in the Consensus link are He3 26-Mar-19 01:22 AM He3 is way more sensitive 26-Mar-19 01:22 AM They're quoted as 70% absolute efficiency whereas the B10 are ~15% 26-Mar-19 01:22 AM in reality there's about an order of magnitude inbetween them 26-Mar-19 01:22 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190223_225848-E7810.jpg 26-Mar-19 01:22 AM That's my result at least 26-Mar-19 10:08 AM Also I go through ePay way too much, so if someone is looking for a specific piece of conflat/iso/nw/etc let me know... 26-Mar-19 10:08 AM I probably scroll through at-least 100 pages of ePay stuff everyday... its... not a problem... I swear... 26-Mar-19 10:08 AM You can stop whenever you want, right? 26-Mar-19 10:08 AM exactly... 26-Mar-19 10:08 AM or well... I can stop when my bank account is empty :) 26-Mar-19 10:09 AM There are loans for that. 26-Mar-19 10:10 AM no no lol 26-Mar-19 10:11 AM What's the point of having money in your bank account if you're not going to use it 26-Mar-19 10:16 AM exactly, and with inflation and whatnot your just loosing money by having it sit there! 26-Mar-19 10:16 AM The members of the group known as "Vacuum Hackers" are not financial advisers, any financial advice received from this group is to be taken with no assurance for financial stability. 26-Mar-19 10:16 AM https://www.ebay.com/itm/MDC-Vacuum-150-6-407002-6-Way-Cross-2-75-Tube-UHV-Fitting/332853667712 26-Mar-19 10:16 AM Relatively cheap 6 way 2.75" for those aspiring mini fusors, or someone who needs all the connections. Some damage to one of the conflat edges it looks like, so purchase at your own risk, I'd start with offering like 70-100 bucks and see where it goes from there. 26-Mar-19 10:16 AM at-least its the cheapest one I've seen, though I'm some someone bought one for 25 bucks last week lol value these bits at what you will 27-Mar-19 07:15 AM I am looking for a turbo, preferably a small turbo, $300-350 usd if I can. Hoping that’s realistic. If I can find something at that price and they will ship to me I will jump on it. 27-Mar-19 07:15 AM If anybody needs wafer Si and can’t get it I could post you some 27-Mar-19 05:57 PM If anyone needs conflat 2.75" blanks... I ended up with a ton after a buying spree awhile ago and dunno how many I'll realllyy need. 27-Mar-19 05:57 PM Not that I think too many of us are having the problem of too many connections lol 30-Mar-19 03:28 PM https://www.ebay.com/itm/113696645002 Just don't hurt yourself 30-Mar-19 03:39 PM It's got some appeal to it but given the price I'll stick with my $50 dental xray :P 01-Apr-19 01:59 AM I want to buy a feedthrough with about 6 wires on a 2.75 CF, does not need to be high voltage or current, anyone know who might sell such a thing? 01-Apr-19 01:59 AM The prof wants to buy one so I can buy it new $$$ 01-Apr-19 02:26 PM https://www.ebay.com/itm/Conflat-High-Vacuum-Chamber/163626993973 01-Apr-19 02:26 PM Kinda highly priced but a 6"-6" T with a 2.75" 01-Apr-19 02:27 PM so don't buy it 01-Apr-19 02:31 PM I am posting it here incase anyone else things its a reasonable price and or really needs it 01-Apr-19 02:31 PM https://www.ebay.com/itm/VARIAN-VACUUM-FITTING-STAINLESS-VIEWPORT-CONFLAT-8-CF-FLANGED-OPTICAL/192876311834 01-Apr-19 02:31 PM like this, expensive, but not SUPER EXPENSIVE 8" viewport 02-Apr-19 01:44 PM https://www.ebay.com/itm/Lab-Box-USA-6-MHz-Quarts-Crystals-Gold-Inficon-Style-10-Pack/132876751874 02-Apr-19 01:44 PM for anyone who needs these for deposition thickness sensing and has a head, you'll want these (if you have an inficon style head anyway) 02-Apr-19 01:44 PM these ussually sell for like 60-70 bucks a pack 02-Apr-19 01:44 PM I had nabbed a pack 02-Apr-19 01:46 PM @Koelzer 02-Apr-19 10:17 PM @Conmega hmm, I was thinking to just decap/decan a 32 kHz crystal oscillator 02-Apr-19 11:00 PM Have you considered old HC-6U crystals? Big cans with similar size crystal resonators. 02-Apr-19 11:11 PM Some older one's can even be just desoldered, no dremeling required. 02-Apr-19 11:11 PM Did test that on half a dozen 3.200MHz SAL11 (domestic spec that has same size as HC-6U) and dremeled them open. 02-Apr-19 11:11 PM And they pulled +5kHz easily by just applying some permanent marker or HB pen graphite on the crystal, before activity ceased. 03-Apr-19 12:25 AM @rfs no but I will add that to a list... now I need to start a list for DIY QCM 03-Apr-19 05:10 AM oh I know where some MASSIVE 3khz crystals are :) 03-Apr-19 05:10 AM yes they made them that slow lol 03-Apr-19 07:04 AM Want 03-Apr-19 07:08 AM I have at-least one at home... I'll see if I can get another few and mail you one at some point 03-Apr-19 07:08 AM they are fun because you can tap the housing and FEEL it vibrate LOL 03-Apr-19 07:08 AM https://www.ebay.com/itm/Varian-L6188-301-VHS-4-4-inch-Diffusion-pump-with-valve-and-Cryotrap/401742512772 03-Apr-19 11:37 AM I think the lowest frequency crystals I have are 100kHz and 65kHz, outside of the 32kHz watch/rtc crystals. 03-Apr-19 11:58 AM An alternative supplier to ebay for soviet russian tube stuff http://www.sovtube.com/33-scintillators- 03-Apr-19 11:58 AM I have ordered some tubes from them in the past with success. 03-Apr-19 11:58 AM nice 03-Apr-19 12:00 PM SNM-13 neutron counter is 18usd, SNM-12 neutron counter is 29usd, snm-14 is 29usd and so on 03-Apr-19 12:00 PM And CI-3BG geiger tubes are still under 3usd/pcs (currently 2.8usd) 03-Apr-19 12:01 PM but the -12 and -13 are very blind 03-Apr-19 12:01 PM They ship via russian post. 03-Apr-19 12:01 PM Ok 03-Apr-19 12:01 PM I'd go with the -11 03-Apr-19 12:01 PM still ~30 bucks and useable 03-Apr-19 12:01 PM 11 is also 29usd and in stock 03-Apr-19 12:01 PM Ok 03-Apr-19 12:02 PM your all talking giberish to me agh 03-Apr-19 12:02 PM Soviet neutron and radiation detection parts. 03-Apr-19 12:02 PM Grah 03-Apr-19 12:02 PM yea just part numbers I don't know yet lol 03-Apr-19 12:02 PM I'd rahter not drop 100usd to that shop 03-Apr-19 12:02 PM Should have not looked 03-Apr-19 12:02 PM vannadiy is a very reliable seller 03-Apr-19 12:02 PM but keep in mind there is still at least an order of magnitude in sensitivity between the B10 and He3 tubes 03-Apr-19 12:03 PM "I'll just grab this neutron detector tube, couple of geigers, a couple of door knob caps and see if they have that soviet PDP-11 on a chip in stock" 03-Apr-19 12:03 PM Ok 03-Apr-19 12:04 PM Ah so He3 tubes are more sensitive then the little scintilators? 03-Apr-19 12:04 PM yes I can't spell 03-Apr-19 12:05 PM with moderator I got 6.3 % efficiency with my SNM-18-1 (He3) and 0.65% with my SNM-11 03-Apr-19 12:05 PM Nice 03-Apr-19 12:06 PM yeah, first of all the tubes have way bigger volume 03-Apr-19 12:06 PM I guess the smaller the He3 tube the worse performance? 03-Apr-19 12:06 PM that 180 dollar price point is eugh to me atm XD 03-Apr-19 12:06 PM depends on volume and pressure 03-Apr-19 12:06 PM since I have no use for it yet 03-Apr-19 12:06 PM Same 03-Apr-19 12:07 PM pff 03-Apr-19 12:07 PM the use is detecting neutrons 03-Apr-19 12:07 PM isn't that enough? 03-Apr-19 12:08 PM right but I don't, or SHOULDN'T have anything that generates neutrons 03-Apr-19 12:08 PM thought of something wrong there XD 03-Apr-19 12:08 PM but yea 03-Apr-19 12:08 PM I dunno 03-Apr-19 12:10 PM ^^ 03-Apr-19 12:10 PM I just may be a tiny bit biased when it comes to detectors 03-Apr-19 12:10 PM I wish you lived near me so I could just tell you, HEY I need to detect this thing from my setup, come over 03-Apr-19 12:10 PM and just watch you bring a vanload of detectors for detecting EVERYTHING 03-Apr-19 12:11 PM too bad I'll never get through the airport with this 03-Apr-19 12:11 PM LOL 03-Apr-19 12:11 PM just leave the fiesta ware at home and you should be FINE 03-Apr-19 12:11 PM I mean tbh its not like a detector should be a problem through the airport 03-Apr-19 12:11 PM just don't leave the xray detector on when going through the xray machine 03-Apr-19 12:11 PM you may... upset some people 03-Apr-19 12:11 PM lol 03-Apr-19 12:12 PM you do realize that most detectors are metal spheres / cylinders with cables dangling off 03-Apr-19 12:12 PM and most are black on the x-ray 03-Apr-19 12:12 PM sure, so are lithium cell batteries 03-Apr-19 12:12 PM like seriously, you may get asked, you just say its a detector 03-Apr-19 12:12 PM I bet you people bring that shit through all the time for buisness 03-Apr-19 12:12 PM the other option is a side flight case that you put through as luggage before, separate from carryon 03-Apr-19 12:12 PM people put all types of toolkits through that 03-Apr-19 12:12 PM just leave the radioactive samples at home 03-Apr-19 12:12 PM :P 03-Apr-19 12:15 PM I guess it should be possible 03-Apr-19 01:56 PM So if choosing between SNM-11, SNM-12, SNM-13, SNM-14 and SNM-32. The choise would be SNM-11, due to it being the least terrible one? 03-Apr-19 01:57 PM snm-32 is he3 03-Apr-19 01:57 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-EA880.png 03-Apr-19 01:57 PM all in this list are He3 for sure, as is the SNM-32 03-Apr-19 01:57 PM with all the others it's a guessing game 03-Apr-19 01:57 PM but most are B10 coated 03-Apr-19 01:57 PM some are BF3, like the SNMO-5 03-Apr-19 01:57 PM SNM tubes can be: -Boron 10 as cathode coating in corona tubes (SNM9-14) -10BF3 as fill gas in proportional tubes (SNM3, 5, 8 & 20) 03-Apr-19 01:57 PM there is some confusion with the SNM / SNMO 03-Apr-19 02:04 PM Ok 03-Apr-19 02:04 PM So that SNM-32 at 29usd would be a sane price? 03-Apr-19 02:05 PM wait 03-Apr-19 02:05 PM what?! 03-Apr-19 02:05 PM link? 03-Apr-19 02:06 PM Out of stock 03-Apr-19 02:06 PM ahh 03-Apr-19 02:06 PM yes 03-Apr-19 02:06 PM damn, and was 41eur 03-Apr-19 02:06 PM sovtube? 03-Apr-19 02:06 PM Yes. 03-Apr-19 02:06 PM http://www.sovtube.com/x-ray-and-geiger-tubes/847-snm-32.html 03-Apr-19 02:06 PM ah, yeah 03-Apr-19 02:06 PM that's been sold out for years 03-Apr-19 02:06 PM Ah, I thought I put in "show only in stock" 03-Apr-19 02:06 PM Ok, sry for the hopeful rush 03-Apr-19 02:06 PM Btw sovtube has referal program with 5% off 03-Apr-19 02:07 PM as far as I'm concerned the ones from vannadiy are the cheapest option for He3 03-Apr-19 02:07 PM ok 03-Apr-19 02:09 PM he3 has better snr and higher efficiency compared to B10, but costs 5 times as much 03-Apr-19 02:09 PM that's the main point 03-Apr-19 02:09 PM AND any amount of He3 comes from decaying tritium from nuclear reactors 03-Apr-19 02:09 PM which I think is pretty cool 03-Apr-19 02:10 PM is that how they get it? 03-Apr-19 02:10 PM aye, pretty much the only way 03-Apr-19 02:10 PM neat 03-Apr-19 02:10 PM just make a reactor and make your own He3 tubes then :) 03-Apr-19 02:11 PM most of the tritium ended up as booster in nuclear warheads and once that decayed it's changed out and the He3 is extracted 03-Apr-19 02:12 PM oh lol that's interesting recycling haha 03-Apr-19 02:12 PM well that's the american way, I don't know anything about russian supplies 03-Apr-19 02:12 PM but I presume it's similar 03-Apr-19 02:12 PM and that almost turns it into a collectible for me 03-Apr-19 02:12 PM like where else can you get a part of a nuclear warhead 03-Apr-19 02:12 PM a part of the actual nuclear stuff in it! 03-Apr-19 02:18 PM Heh, true. 03-Apr-19 02:19 PM lol 03-Apr-19 02:19 PM lots of jumps there but sure hehe 03-Apr-19 02:19 PM I mean I can buy a missle silo here in the US of A if I have enough money so 03-Apr-19 02:20 PM but without the missle 03-Apr-19 02:20 PM we have.... bigger... collectibles :) 03-Apr-19 02:20 PM I hope 03-Apr-19 02:20 PM uhm 03-Apr-19 02:20 PM the one museum out somewhere has one in it 03-Apr-19 02:20 PM but without the warhead 03-Apr-19 02:20 PM but yes... most of them had the missles removed :P 03-Apr-19 02:20 PM i hope 03-Apr-19 02:20 PM yea it was de-militarized 03-Apr-19 02:22 PM that's still on my list 03-Apr-19 02:22 PM and it might take some time to do that 03-Apr-19 02:23 PM lol what a real warhead? 03-Apr-19 02:23 PM see an actual functional nuclear warhead IRL 03-Apr-19 02:23 PM oh... heh 03-Apr-19 02:23 PM preferably not falling towards me 03-Apr-19 02:23 PM well you probably have... about 1/1000th of the clearances now... :P 03-Apr-19 02:23 PM just need the rest of them! 03-Apr-19 02:23 PM nah, there aren't too many left to get 03-Apr-19 02:24 PM hint: 999 of them are military security clearances 03-Apr-19 02:24 PM unless your the janitor 03-Apr-19 02:24 PM then you just kinda keep the place clean for under minimum wage and have no idea 03-Apr-19 02:24 PM security clearly isn't a joke or anything 03-Apr-19 02:24 PM its amazing we haven't freaking blown ourselves up yet 03-Apr-19 02:24 PM but most of them take like 20+ years of experience to even qualify for asking for one 03-Apr-19 02:24 PM thanks to some great engineers making the devices failsafe 03-Apr-19 02:25 PM yea until there is a leak of nasty fuel and someone drops a wrench lol 03-Apr-19 02:25 PM because that NEVER happened 03-Apr-19 02:25 PM no, that's exactly the thing 03-Apr-19 02:25 PM engineered to need like 5+ different signals to be armed to even be physically able to critical 03-Apr-19 02:26 PM I know lol 03-Apr-19 02:26 PM we are lucky they designed them that well 03-Apr-19 02:26 PM of course the rocket fuel can explode and bring a couple of kg Pu into the atmosphere, but they will never go nuclear 03-Apr-19 02:27 PM the only problem is the system to enable that is a 1970s IBM mini computer run off 8" floppy disks and the codes are probably 1111 03-Apr-19 02:27 PM yep 03-Apr-19 02:27 PM I want one of those minicomputers... its an IBM series/1 03-Apr-19 02:27 PM they are nice little minis 03-Apr-19 02:27 PM they are just kinda far and few between anymore 03-Apr-19 02:28 PM let's buy a silo, you get the PC and I get the... physics package 03-Apr-19 02:29 PM lmao 03-Apr-19 02:29 PM now we just need all the dang money 03-Apr-19 02:29 PM I mean... they aren't crazy expensive most of the time for an old run down one 03-Apr-19 02:29 PM like... 100-300K 03-Apr-19 02:29 PM but its like... eugh the work required to get them back to any condition 03-Apr-19 02:29 PM after that though they are AWESOMEEEE 03-Apr-19 02:29 PM completely spring isolated room... 03-Apr-19 02:29 PM blast doors and such 03-Apr-19 02:30 PM mhh :3 03-Apr-19 02:32 PM gahhhh my LDS order gets here monday 03-Apr-19 02:32 PM boo hiss 03-Apr-19 02:32 PM I want vacuum darnit 03-Apr-19 02:33 PM just hope the courier doesn't break it 03-Apr-19 02:33 PM nah I've not had many problems 03-Apr-19 02:33 PM and LDS packages stuff well 03-Apr-19 02:33 PM and I am sure its insured since its all brand new from a company lol 03-Apr-19 02:33 PM mumble mumble 03-Apr-19 02:34 PM also its a KF25-KF16 adapter, centering rings and clamps, 4.5" copper rings pack of 10, and a gallon of roughing pump oil 03-Apr-19 02:34 PM not like its a turbo pump lol 03-Apr-19 02:35 PM well you can always fold over a CF ring 03-Apr-19 02:35 PM wat 03-Apr-19 02:35 PM oh right 03-Apr-19 02:35 PM I mean sureee but they are vacuum sealed all against one another 03-Apr-19 02:35 PM if you can fold over 10 thick of 4.5" copper rings... 03-Apr-19 02:35 PM jesus 03-Apr-19 02:35 PM would any of the box be LEFT? 03-Apr-19 02:36 PM I've seen some pretty amazing things 03-Apr-19 02:36 PM oh I know 03-Apr-19 02:36 PM I ended up with a box with a turbo sized hole in the side of it and no turbo 03-Apr-19 02:36 PM that was fun 03-Apr-19 02:37 PM hahaha 03-Apr-19 02:37 PM instead 03-Apr-19 02:37 PM it was packed with fucking clothes 03-Apr-19 02:37 PM I have a feeling... what happened is the shipping company has some bin with destroyed packages 03-Apr-19 02:37 PM and they just kinda... kobble things back together hoping to make people happy instead of eating it 03-Apr-19 02:37 PM and like yea 03-Apr-19 02:37 PM wtf 03-Apr-19 02:37 PM luckily the controller I wasted like 100 bucks on ended up being handy for the smaller turbo I ended up with 03-Apr-19 02:37 PM but yeaaa 03-Apr-19 02:37 PM still amazed by that 03-Apr-19 02:38 PM hold one on second 03-Apr-19 02:38 PM still have that box of clothes sitting in my dining room actually ffs 03-Apr-19 02:38 PM oh oops 03-Apr-19 02:38 PM what 03-Apr-19 02:38 PM how did you... 03-Apr-19 02:39 PM language on my part... I guess for some reason I have immunity 03-Apr-19 02:39 PM shhhh 03-Apr-19 02:39 PM XD 03-Apr-19 02:39 PM I have no idea tbh 03-Apr-19 02:39 PM heh, nice 03-Apr-19 02:39 PM yea 03-Apr-19 02:39 PM weird 03-Apr-19 02:39 PM maybe its because I accidentally rejoined the server?? 03-Apr-19 02:39 PM I dunno 03-Apr-19 02:39 PM weirdio 03-Apr-19 02:39 PM its stupid anyway in my opinion 03-Apr-19 02:39 PM because people just do "f*cking" anyway 03-Apr-19 02:39 PM and anyone older than 10 years old understands what that is 03-Apr-19 02:40 PM because that's what people do, all da long 03-Apr-19 02:40 PM pmuch' 03-Apr-19 02:40 PM I've heard cussing on plenty of phone calls at work 03-Apr-19 02:40 PM lol 03-Apr-19 02:41 PM I don't know, guess it's on the lines of keeping the server professional 03-Apr-19 02:41 PM or at least suited for professionals 03-Apr-19 02:42 PM I mean... theres a difference between professional and polite 03-Apr-19 02:42 PM as if they don't swear 03-Apr-19 02:42 PM and to be honest those are both different from cussing 03-Apr-19 02:42 PM like I dunno 03-Apr-19 02:42 PM I think you can be polite and still swear 03-Apr-19 02:42 PM exactly 03-Apr-19 02:42 PM and to be honest they have shown people who cuss have less stress 03-Apr-19 02:42 PM like there are studies on this stuff 03-Apr-19 02:42 PM its just a way to vent frustration and to be honest if anything it helps keep people off the edge of aggression if anything 03-Apr-19 02:42 PM but I dunno 03-Apr-19 02:42 PM opinions are opinions I guess 03-Apr-19 02:42 PM I'm not the boss 03-Apr-19 02:43 PM and if the admin wants it ¯\_(ツ)_/¯ 03-Apr-19 02:44 PM more like THE ADAM 03-Apr-19 02:44 PM XD 03-Apr-19 02:44 PM aight, I'm headed home, I'll ttyl 03-Apr-19 02:44 PM nah I'm gonna go to bed soon 03-Apr-19 02:44 PM see ya ^^ 03-Apr-19 04:51 PM https://www.ebay.com/itm/High-Vacuum-4-1-2-CF-Conflat-10-Inch-Straight-Pipe-Section-Stainless-Steel/312384000091 03-Apr-19 04:51 PM 6" conflat straight for a not crazy amount 05-Apr-19 12:46 AM @Conmega here's a chamber for your next project after the mini-chamber: https://portland.craigslist.org/grg/bfd/d/brighton-1100-gallon-stainless-pressure/6836517704.html 05-Apr-19 08:24 PM That reminds me of the sort of crazy “that must have cost a fortune” stuff they used to have at the Los Alamos Black Hole. It’s a shame it closed down, I always wanted to go there 08-Apr-19 10:24 PM Trying to decide if I want another project... https://www.govdeals.com/index.cfm?fa=Main.Item&itemid=9423&acctid=8445 08-Apr-19 10:53 PM @piGuy I'd totally buy one of those off you if you get them :) 08-Apr-19 10:53 PM Maybe help make it more worth the price 08-Apr-19 10:53 PM I could use one for photo-resist removal/ashing 08-Apr-19 10:53 PM but you need an oxygen rated vacuum pump for those I believe fair warning 08-Apr-19 10:53 PM But yea let me know hah 08-Apr-19 10:59 PM I have a dry scroll vacuum pump, maybe that will work 09-Apr-19 12:03 AM I think so 10-Apr-19 01:50 AM just ordered some HT diodes for my microwave oven transformer sputter coater https://www.ebay.com/itm/US-1-10PC-PRHVP2A-20-16-14-15-Single-Phase-High-Voltage-Rectifier-Diode-14-20KV/183761663120 10-Apr-19 08:01 AM @Conmega , I checked out the two Plasma Preps yesterday. Currently in negotiations with @AdamMcCombs . 10-Apr-19 01:20 PM cool! 11-Apr-19 10:13 AM Searching for a high temperature tube furnace and stumbled upon this beast. https://www.ebay.com/itm/Barnstead-Thermolyne-High-Temperature-Tube-Furnace-F54548CM-with-Gas-System/253140585425 15-Apr-19 11:07 AM https://www.ebay.com/itm/Edwards-FL-20K-Foreline-Trap-A133-05-000-Vacuum-Pump-Swagelok-Purge-Valve/133018786715 15-Apr-19 11:08 AM Jeasus 15-Apr-19 11:08 AM The "white" option under this, 89 bucks shipped for a foreline trap is a decent price, cheapest on ePay at the moment by far, most are like 130-200. They do have some with swagelok purges if you need them... 15-Apr-19 11:08 AM they have some cheaper options with things missing springs if you can produce and or find a spring 15-Apr-19 11:08 AM Check the description for a more comprehensive description of the options. 15-Apr-19 05:13 PM The Swageloks alone would be a few bucks 15-Apr-19 05:13 PM I’m developing a real fondness for Swagelok 15-Apr-19 05:13 PM Are they zeolite ones you can open or sealed metal wool? 16-Apr-19 12:43 AM https://www.equipnet.com/auctions/zeiss-gemini-sem-fib-microscope-system-listid-608201/ 16-Apr-19 01:43 AM @a_quiet_scientist it's activated alumina, bulk material. Manual says you can reactivate in oven, also probably can get suitable media cheaper from other sources than Edwards. I'm thinking about getting one. Might be a good idea to get fresh media because who knows what's adsorbed on there. 16-Apr-19 09:47 AM https://www.ebay.com/itm/Leybold-Inficon-Transpector-XPR-TR100/183249380754 16-Apr-19 09:47 AM Cheaper RGA, probably make an offer 100-200 dollars less than the asking as they have been up for awhile. @N00N 16-Apr-19 10:11 AM ah nice tnx 16-Apr-19 11:28 AM maybe one can pimp those 16-Apr-19 12:00 PM How so? 16-Apr-19 12:40 PM @a_quiet_scientist they are zeolite ones, like the one I just got and a few others around here use. KF25s on the inlet and outlet. 18-Apr-19 01:31 PM @Conmega I wasn't able to find any info on those RGAs... seems like a really big challenge to get power running to them and control/interface with them 18-Apr-19 01:47 PM @nmz787 they have like a 24V input and RS232 on the back... I think some people in the community have the software floating around. 18-Apr-19 01:49 PM hmm, I literally found nothing on google, maybe I was restricting results to PDF type or something 19-Apr-19 03:35 AM These KF16 viton gasgets turned out ot be quite the deal https://www.aliexpress.com/item/Lot-of-2-KF16-Centering-Ring-S-S-Viton-Vacuum-Pump-Flange-Fitting-Part-XWJ/32693799718.html 19-Apr-19 03:35 AM Bought 3lots, or in other words 6x gasgets 19-Apr-19 03:35 AM Got 6x gasgets AND 6x KF16 clamps with them 19-Apr-19 03:35 AM Not bad at all for $ 7.25 19-Apr-19 03:35 AM Likely a mistake by the seller, but still nice 19-Apr-19 11:16 PM Nice 19-Apr-19 11:16 PM I should see what other vacuum stuff there is on AliExpress 19-Apr-19 11:16 PM I saw some sanitary fittings - crosses and stuff which would be nice if you cut them up and TIG them together onto standard flanges 20-Apr-19 01:24 AM man, RF is wonky stuff https://www.ebay.com/itm/ASTEX-AX3041-REV-1M-MICROWAVE-MANUAL-MATCH-/362393558759 20-Apr-19 02:12 AM Looks kinda like a cavity filter or series of pipe cap filters, but for impedance matching. http://www.w1ghz.org/filter/Pipe-cap_Filters_Revisited.pdf 20-Apr-19 02:38 AM Yup, it's a tuner 20-Apr-19 02:38 AM 3x screws in a waveguide is comparable to a Pi-tuner. 20-Apr-19 08:36 AM nice 20-Apr-19 02:40 PM neat, thanks! 20-Apr-19 03:55 PM @a_quiet_scientist @Conmega I got one of those Edwards foreline traps. Thanks! Here some pix. 20-Apr-19 03:55 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190420_171236000-588A7.jpg 20-Apr-19 03:55 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190420_170436017-4B129.jpg 20-Apr-19 03:55 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190420_170456285-3FD90.jpg 20-Apr-19 03:55 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190420_171052955-FE3D3.jpg 20-Apr-19 03:55 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190420_170945057-C7C3A.jpg 20-Apr-19 03:55 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190420_170526947-9B7A4.jpg 20-Apr-19 03:55 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190420_170449435-7F1FE.jpg 20-Apr-19 03:55 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190420_170536137-33F68.jpg 20-Apr-19 03:55 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190420_170902639-E5CD3.jpg 20-Apr-19 03:55 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190420_170602272-312FB.jpg 20-Apr-19 04:03 PM FWIW, after a bit of reading it seems that activated alumina is basically better than zeolite for preventing backstreaming of rotary pump oil into the HV pump. Zeolite is better at absorbing moisture, but that is mostly a problem because once is is saturated with water it does not absorb oil. Activated alumina will absorb oil even when loaded with water. I had thought that absorbing water was good because the pump doesn't like water, but the typical zeolite trap is regenerated under vacuum so all that water is going into the pump anyway. 20-Apr-19 06:00 PM wait, so if the zeolite is drying out, then won't it be able to catch oil? or is the assumption the water charge from the chamber going to swap the oil backflow ? 21-Apr-19 06:10 AM https://www.ebay.com/itm/153141929464 22-Apr-19 04:45 AM @nmz787 when you are regenerating the zeolite you shut off the upstream connection, isolating the trap. It's connected directly to the backing pump, then you turn on the heater. So it is absorbing water for a while, then it's dumped into the pump over a short time. You would open the ballast valve then. With the alumina, if you regenerate it at all, you do that in an oven at atmospheric. 26-Apr-19 03:07 PM https://www.ebay.com/itm/Edwards-EMF-10-Oil-Mist-Exhaust-Filter-A462-26-000-for-Vacuum-Pump/133018648258 26-Apr-19 03:07 PM Guy who is selling the foreline traps also has oil mist filters, I would only consider these "housings" since they will all likely need filters replaced unless you get lucky, so I'd buy the one with "more oil" unless you want to spend 10 extra bucks gambling on some life out of a filter 26-Apr-19 03:07 PM https://www.ebay.com/itm/A22304198-and-A22304079-Set-of-elements-for-EMF10-Edwards-filter/163654319492 26-Apr-19 03:07 PM filter set is 90 bucks, so expect around 150-170 for an EMF-10 which is a nice large oil mist filter, you can probably get by with some of the cheaper filters if you have a smaller pump 26-Apr-19 03:07 PM like the super common, chinese cloned alcatel one. 26-Apr-19 03:09 PM Yeah and the blue one that jeol uses 26-Apr-19 03:09 PM Ted Pella has it for 70 I think 26-Apr-19 03:09 PM oh really? 26-Apr-19 03:09 PM Thats really cheap, I mean the alcatel clone that LDS sells is still like 130 bucks but thats rated for 20 CFM, what is the Ted Pella one rated for? 29-Apr-19 04:13 PM https://www.ebay.com/itm/Varian-Turbo-V-70-Pump-with-Controller/323787710454 29-Apr-19 04:13 PM High but not grossly unreasonable amount for a Turbo-V70 plus controller and some mounting/water chilling brackets. 29-Apr-19 04:13 PM Could probably make an offer for like 500 and get it, maybe even less if you want to try. 30-Apr-19 02:20 AM Is Duniway good generally? How do they compare to LDS? 30-Apr-19 02:21 AM I have had a bit mixed from duniway but nothing I would describe as bad, just not perfect 30-Apr-19 02:21 AM They can seem a bit unorganized and will sometimes delay shipping for unown reasons. They are also back logged on some rebuild services, but I have better sources for a lot of that stuff so I don't mind. 30-Apr-19 02:54 AM I find LDS fast and efficient but they do make me do export control stuff even for a bolt, and international shipping is quite expensive 30-Apr-19 05:12 PM my favorite thing about duniway is that they're a 15m drive from me, and i can will-call some gaskets or smth and often they have 'em ready that day. otherwise they're seemingly a bit pricier than other places, and i do also get that unorganized impression a bit too 30-Apr-19 05:46 PM Never purchased from Duniway myself yet but they have the cheapest rebuild kit for my Alcatel 2008AC I believe, so I will likely do so in the future. 01-May-19 08:30 AM Duniway is fine. Like all vacuum companies each has some specific items at great prices and everything else is expensive. I usually buy from them because they are close and sometimes will call things if I am up in that area. Their weave rebuild kits and pump oils are reasonably priced. I had them rebuild a 1400 just to see how good of a job they do and it was ok. Looked pretty but had a slow external leak. I generally do rebuilds myself and their kits work our very well. Sometimes it takes a couple days for them to get out an order but generally I have had good experiences. 01-May-19 08:30 AM Wow. How did auto correct get weave from pump? Hahaha. Fat fingers. 01-May-19 01:58 PM For ion pumps I don't use them at all anymore 01-May-19 04:20 PM Won a surplus auction and now I find myself with 23 laboratory water baths. Crap! 01-May-19 06:42 PM Uhm, what size and what kind? 01-May-19 06:42 PM Also surely you knew what was in the auction before bidding on it? 01-May-19 07:07 PM Various sizes and kinds. 3 of them are recirculating refrigerated chillers which is kind of nice. 01-May-19 07:07 PM At some point between viewing the lot and bidding I forgot exactly how many water baths I was bidding on. Turns out it was a lot. 02-May-19 12:13 PM anyone got a KF25 or 40 bnc feedthrough? 03-May-19 08:44 AM https://www.ebay.com/itm/PFEIFFER-TMU-064-TURBOMOLECULAR-VACUUM-PUMP-WITH-TCS309-PM021-633-X/323317352596 03-May-19 08:44 AM High price but complete turbo to keep an eye on as it gets relisted, make a lower offer on. 05-May-19 03:57 AM https://www.ebay.de/itm/163654110923 07-May-19 09:30 PM University of Puget sound is looking to re-home a Zeiss 902 TEM, no price mentioned, contact areplogle@pugetsound.edu 07-May-19 09:30 PM I have been looking at that thing 07-May-19 09:30 PM I wondered 07-May-19 09:30 PM It's way too tempting 13-May-19 03:16 AM For Dutch or people near the netherlands there is a big load of vacuum parts and supplies at the industrial auction in Eindhoven. 13-May-19 03:16 AM https://www.iveindhoven.com/ 13-May-19 07:01 AM Looks like they specialize in scrapping out analytical labs and semicon fabs. Always be careful with that stuff. You never know what it was pumping. Could be some highly toxic stuff! 13-May-19 10:23 PM https://www.ebay.com/itm/C159484-Key-High-Vacuum-QADT-600-Load-Lock-Door-w-6-CF-Conflat-Tee-Chamber/392296334267 13-May-19 10:23 PM https://www.ebay.com/itm/MDC-Varian-8-Conflat-Multi-Port-High-Vacuum-Chamber-Stainless-Steel-UHV-CFF-CF/223514020801 14-May-19 02:47 PM They were mainly pumping hydrogen and nitrogen, most of it comes from asml and the company they bought a while ago. So mostly the stuff was issued for testing and production of semiconductors 14-May-19 05:40 PM https://www.ebay.com/itm/MKS-i-Baratron-Capacitance-Manometer-0-to-100-Torr-DMB12TGACJNHF54/253958425138 15-May-19 12:13 PM https://www.ebay.com/itm/Airguard-Micropleat-HEPA-Ceiling-Fan-Filter-H2347W55/302801007974 15-May-19 12:13 PM Is this a reasonable deal? 15-May-19 12:13 PM Sucking air from my garage crawlspace doesn't seem like the best idea, so I still might default to just getting some HEPA unit from walmart and sticking it through the side of my plastic "room" 15-May-19 12:13 PM This says it can work horizontally but is about 2x what I want to pay at max https://portland.craigslist.org/wsc/bfd/d/tampa-800-cfm-hepa-air-scrubber/6883520971.html 15-May-19 01:08 PM Oh cool, those are what you'd see in the ceiling of a clean room. The ePay post that is. 15-May-19 02:05 PM Seeking input from the experts: does this look like it's too much of a project to get running? https://www.ebay.com/itm/Anatech-Hummer-6-2-Sputtering-System/292841878079?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908131621%26meid%3Df2ead32dc9a34ccb88e8e06e3aa729e0%26pid%3D100678%26rk%3D2%26rkt%3D9%26sd%3D323804341869%26itm%3D292841878079&_trksid=p2481888.c100678.m3607&_trkparms=pageci%3Aa4a2c6a9-7754-11e9-81b3-74dbd180befd%7Cparentrq%3Abd4d086016a0ab452e40399dffc460fd%7Ciid%3A1 15-May-19 02:06 PM Its not in great shape 15-May-19 02:06 PM no glass... Its a pretty hard piece to make on the cheap 15-May-19 02:06 PM Doable, just hard 15-May-19 02:06 PM I was thinking of offering substantially less than the asking price, but not sure if that would even be a good idea... 15-May-19 02:07 PM It doesnt look like a gold head. It could be gold paladium or silver is the other problem 15-May-19 02:07 PM Silver is bad 15-May-19 02:09 PM Maybe I'll steer clear.... 15-May-19 02:09 PM There are better ones around that price right now 15-May-19 02:56 PM @piGuy what do you want to coat, for what purpose, how well defined do you want the layer to be? You can make a sputter coater with an old microwave and some pretty cheap diodes if you just need a conductive layer for basic SEM conductivity 15-May-19 03:13 PM Yeah but if you want good perproduction, long sample life, good performance on rough samples, and minimizing thermal damage things get more complicated 15-May-19 03:18 PM Yeah, or even good grain composition, conformality, all sorts of variables 15-May-19 03:19 PM For tungsten sem grain is less important than a lot of things 15-May-19 03:19 PM You just dont have the resolution to see grain in most cases, so you can prioritize things like getting better grounding for complex structures and what not. 15-May-19 03:26 PM @nmz787 , mostly I just want to coat SEM samples effectively and cheaply. I'm also interested in sputter coating copper onto plastic substrate but that may need to be a different machine. 15-May-19 03:41 PM I guess I was referring to grain size in terms of fabbing layers, but yeah if you just need to coat stuff for cheap, it seems like building your own might be the most cost effective and easy ramp up on the technology if you ever need to move up to something more complex 16-May-19 01:04 AM copper for sem? y 16-May-19 04:57 AM copper sputtering would be for non-SEM purposes 16-May-19 05:35 PM Bought a Varian SD-451 at auction. Hope it works! 16-May-19 05:35 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-CD734.png 17-May-19 03:11 AM ah ok 18-May-19 07:26 AM Hi, I have some stuff, that I want to sell, is it ok to offer it here? I have an Alcatel 2012 pump, some KF16/25 plumbing, a couple of gauges, a burkert mfc, and some silicon wafers. I live in Germany, so if anyone here is looking for some of those parts send me a message :-) 18-May-19 08:16 AM @heye Yeah no problem. 18-May-19 07:30 PM @N00N well copper is conductive and widely available.... What's easier and cheaper to obtain? What problems am i missing re: copper? 18-May-19 07:59 PM For sem a lot. It oxidize, is not very stable, is very poor resolution, and samples coated in it don't last for a long time 18-May-19 09:42 PM Copper is a good base to plate something else on though, such as nickel or gold. 19-May-19 12:37 AM Hmm, sounds like if it oxidizes, you dont have good vacuum, in which case it'd be almost like an IGP 19-May-19 06:30 AM @nmz787 hmmm if you consider the complete process and the aspect of reactivity with the specimen and the (rest)atmosphere, i guess gold or carbon is cheaper at the end. 19-May-19 06:30 AM but thats what you guys already mentioned 20-May-19 04:34 AM I'm selling thoses, but as they end today and I just won't to get rid of them I would not consider this advertising but rather pointing out a cheap deal: 20-May-19 04:34 AM https://www.ebay.de/itm/233226709632 20-May-19 04:34 AM https://www.ebay.de/itm/233226689546 20-May-19 05:27 AM @niklas do you still have any of those xray sensors for sale? 20-May-19 10:32 PM Looks like Bid Service LLC is closing down. Lots of goodies going up for auction! https://www.go-dove.com/en/events?cmd=details&event=502272&keywords=Online+Auction+of+Electronic+Test+and+Measurement+and+Semiconductor+Manufacturing+Assets 21-May-19 08:41 AM oh damn 21-May-19 08:41 AM seems like some crazy deals to be had 21-May-19 08:41 AM if only I wasn't 3000 miles away 22-May-19 01:03 AM in case anyone is looking for a CZ crystal grower https://thebranfordgroup.hibid.com/catalog/163400/sunpower/?cpage=2 22-May-19 01:03 AM only 200kW power required 22-May-19 01:04 AM Yeah nbd right? 22-May-19 01:07 AM they also have megawatt generators too, I guess 22-May-19 01:07 AM I didn't realize a megawatt generator was only the size of a cargo shipping container 22-May-19 01:07 AM man... I wonder what their dumpster looks like tonight 22-May-19 02:59 AM ️ 22-May-19 07:42 AM @nmz787, I saw those in person yesterday. Big factory, shutting down thanks to cheap chinese solar panels. 22-May-19 07:42 AM Only vacuum gear I got was a rotary vane pump. Got outbid on all the fun stuff. 22-May-19 10:23 AM @piGuy do you live around Hillsboro? 22-May-19 10:24 AM Seattle, just drove down to pick up my stuff and drove back. 22-May-19 10:24 AM I spent two hours in the parking lot disassembling a dozen metro racks that I bought. 22-May-19 10:26 AM Ah, bummer, i live about 10 minutes from that factory 22-May-19 10:29 AM Some day we should have a PNW meetup of vacuum hackers. There seems to be quite a few of us. 22-May-19 11:23 AM Got an email randomly about these ongoing auctions: https://edispositions.com/#/ 22-May-19 11:23 AM Two auctions going on. There appears to be a lot of rf and thin film stuff going up, as well as sems, plasma etchers, mass spectrometer, xray inspection unit, vacuum pumps, etc 22-May-19 03:01 PM yeah i got e-mailed about them too to my ebay e-mail alias 22-May-19 03:01 PM so someone sold out my e-mail ig, but they've got some interesting stuff.. 22-May-19 07:59 PM actually, meant to drop this here instead of #show-and-tell -- UW's auction site occasionally has some cool stuff; here's a 12" turbopump https://swapauction.wisc.edu/Listing/Details/5507958/TurboV-1800A-Vacuum-Pump-51068-B 22-May-19 09:03 PM Half of us here are probably thinking of the other uw right now... 22-May-19 09:05 PM jeeeeezzzzz 22-May-19 09:05 PM I might actually have enough conflat soon to NEED THAT 22-May-19 09:05 PM Nah you just need to go to the LIGO school of bake out 23-May-19 06:32 AM heh 25-May-19 07:00 PM Hey, I'm not sure if this is the right place to be asking this, but since it looks like we got some people in the HV[oltage] community here as well, I wanted to see if anyone had any 50 kV 100 mA (or greater) that they would be willing to sell. I gave HVStuff.com a try, but shipping to Rhode Island ends up being more expensive than the actual item and shipping is well over a month. If you would be willing to sell one, please email me at guertlerj21@barringtonschools.org. Thanks. 25-May-19 08:59 PM That's a pretty hefty supply, much more than even your average xray transformer. 5kW hv supply at that current wouldn't be cheap anywhere, may be tough to get. What's it for? 26-May-19 09:35 AM Greetings, the x ray transformer that I have is only 80 kV at 10 mA. I need six 50 kV 100 mA diodes to make a full wave rectifier to provide me with a negative DC out put (-40 kV DC). The 100 mA figure is only because there is a very brief power surge that can go up to 100 mA. 26-May-19 09:57 AM *EDIT: I was talking about diodes in my first post, not a power supply 26-May-19 10:12 AM Ok, makes much more sense now lol 26-May-19 10:12 AM You could always make your own diode arrays with smaller rated ones pretty cheap. At work I have made several 40kV, 6A protection diodes for a tube modulator driving a klystron for a linac. These were just made with standard 1kv, 1A rated diodes. 6 in parallel, with 40 of these in series. Note that for multiple diodes in series you want to make sure the voltage drop is even across each one, so you would want a high value resistor in parallel with each diode. So for each 6 diode parallel stack, I had a 10M ohm, 1/2W resistor in parallel as well. 26-May-19 10:12 AM The diodes and resistors were bought in bulk from digikey pretty cheap. It's a heck of a lot of soldering, but it will get you where you need to go if you can't find commercial ones or are strapped for cash. 26-May-19 10:12 AM I have seen some quite high voltage and current rated diodes on ebay though, they are not too uncommon, even if you have to put a couple in series for the full rating, though they are still not necessarily cheap if you need a lot for a full wave rectifier 27-May-19 02:30 PM https://www.ebay.com/itm/233236542537 27-May-19 02:34 PM nice 28-May-19 12:43 AM hochspannung! obacht 31-May-19 08:51 PM optical comparator + more? https://www.ebay.com/itm/LEITZ-Large-Metallographic-Microscope-MM5-MM-5-WETZLAR/264344577051 31-May-19 09:01 PM a bit over stated as such, but sure, could be used for that, amongst other things.. will keep an eye on it.. shipping will be terrible though 04-Jun-19 12:47 PM Any thoughts on this sputter coater? Attracted by the price, but the shipping quote was more expensive than the machine... https://www.equipnet.com/anatech-sputterx-sputter-coater-listid-669185/ 04-Jun-19 12:51 PM well with any luck there's gold inside 04-Jun-19 12:51 PM But I don't know how to check for that 04-Jun-19 12:51 PM Yeah the coater looks good but doesn't look confined for sem 04-Jun-19 12:51 PM Maybe 04-Jun-19 12:51 PM It just doesn't quite look like gold 04-Jun-19 12:51 PM Or one of the gold aloys 04-Jun-19 12:51 PM But other than that it's a great price 04-Jun-19 12:53 PM speaking of 04-Jun-19 12:53 PM https://www.ebay.de/itm/173885596975 04-Jun-19 12:53 PM could that be a gold target? 04-Jun-19 12:54 PM Yeah looks like it 04-Jun-19 12:54 PM https://www.ebay.de/itm/112394034591 Same here I'd say... 04-Jun-19 12:55 PM Targets and interchangeable but yeah 04-Jun-19 12:55 PM Glass can be a challenge to inexpensively reproduce 04-Jun-19 12:57 PM does it have to be glass? 04-Jun-19 12:57 PM No 04-Jun-19 12:57 PM But the acrylic in the right size can be a problem 04-Jun-19 12:57 PM how about metal? 04-Jun-19 12:57 PM or would that mess up the plasma 04-Jun-19 12:58 PM I don't think so 04-Jun-19 12:58 PM I mean you already coat it in gold 04-Jun-19 12:58 PM right 04-Jun-19 01:00 PM Seeing the pretty plasma is nice as well 04-Jun-19 01:00 PM Btw I meant to say configured not confined 04-Jun-19 01:04 PM There seems to be some pretty cheap borosilicate glass cyclinders from China listed on eBay. If the size is right, could be an easy way to replace chamber glass. 08-Jun-19 01:31 AM https://www.ebay.de/itm/253460836077 08-Jun-19 01:49 PM Nice 09-Jun-19 11:59 PM You can get diodes such as GP02 series quite cheap. If you only need 100mA this will mean much less soldering for your diode array, since each diode is 4kV 250mA compared to something like your common 1N4007 with 1kV 1A. You can use 20 diodes instead of 80. https://www.digikey.com.au/product-detail/en/vishay-semiconductor-diodes-division/GP02-40-E3-73/GP02-40-E3-73GICT-ND/9600285 14-Jun-19 02:37 PM https://www.ebay.com/itm/C159597-MDC-453022-NW40-KF40-Vacuum-Flange-Sapphire-Viewport-0-94-dia-/392297969863 14-Jun-19 02:37 PM I believe some people here were looking for Sapphire viewports for certain applications, these are reasonable 14-Jun-19 09:22 PM That is a pretty good deal. 14-Jun-19 09:22 PM It speaks to my inner hoarder. 17-Jun-19 09:20 AM https://www.ebay.com/itm/High-Vacuum-Feedthrough-4-Pin-KF16-1-33-Stainless/192952565865 17-Jun-19 09:20 AM Pretty nice feed throughs, KF16, reasonable price 17-Jun-19 09:20 AM There are two available. 17-Jun-19 09:26 AM So make sure to order 3 19-Jun-19 07:17 AM <__ice9#6039> So I am trying to buy some melt-processable fluoropolymers on Alibaba right now, but the main company offering them seems to deal mostly in 25kg increments. Supposedly about $10-12/kg for casting-and-lining-grade FEP granules and $25-ish/kg for PFA granules. They also have FEP dispersions for thin coatings, but with limited shelf life so I can't really store extra. Would anyone be interested in splitting an order for FEP granules in particular? Otherwise I would probably just sell off some of the extra on eBay or something. 19-Jun-19 07:17 AM <__ice9#6039> Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/1560953857058-52519.png 19-Jun-19 07:17 AM <__ice9#6039> I would be willing to send some for my costs plus 50% plus shipping. Otherwise will probably list online at a 300-500% markup based on what this stuff normally sells for in the U.S. 19-Jun-19 07:17 AM <__ice9#6039> Anyway this is tentative. Just wanted to gauge interest. 19-Jun-19 07:17 AM <__ice9#6039> FEP is great stuff-- it can be used to line reactor vessels to imbue them with extremely strong protection against virtually every single chemical 19-Jun-19 07:17 AM <__ice9#6039> It's also transparent 19-Jun-19 07:17 AM <__ice9#6039> It can be melt-processed like hot glue, injection-molded, pressed into sheets, etc. It's self-lubricating much like Teflon PTFE. But it's also fairly flexible. 19-Jun-19 07:56 AM I'd take a kilogram or two. 19-Jun-19 08:41 AM <__ice9#6039> Ah cool so there is some interest here. I'll post when I hear back from this supplier. I'm hoping the price to get it to other people would only be like $15-18/kg 19-Jun-19 02:16 PM my inner packrat is like 'oh that might be useful to have around someday' but i don't think i would have any use for it otherwise >.> 19-Jun-19 02:16 PM but i could go for a kg just in case, too, especially at that price 19-Jun-19 03:42 PM I might be interested as well 19-Jun-19 10:26 PM <__ice9#6039> Ok some good news and some not so good news 19-Jun-19 10:26 PM <__ice9#6039> The supplier did get back to me with an offer 19-Jun-19 10:26 PM <__ice9#6039> But it's $13.20/kg plus $10/kg shipping in units of 25kg 19-Jun-19 10:26 PM <__ice9#6039> Figuring 50% plus their shipping costs yields a cost of $29.80/kg plus the shipping costs from me to you 19-Jun-19 10:26 PM <__ice9#6039> Still interested? 20-Jun-19 07:40 AM yeah that still sounds good 21-Jun-19 02:49 PM https://www.ebay.com/itm/Pfeiffer-Turbo-Vacuum-Pump-TMH-261-w-TC600-Controller-Air-Cooling-Auto-Valve/163743629044 21-Jun-19 02:49 PM Pretty fair price considering its a newer turbo, with controller, tested and ready to go. Can definitely get better deals if your able to do your own testing and aren't afraid to possibly have to rebuild your own turbo. But this is a great option for someone looking for something ready to go. 21-Jun-19 02:57 PM that is an excellent deal for a turbo + controller + cooling fan (!) + vent solenoid (!!). if i didn't already have two turbos i'd be right on that 21-Jun-19 03:23 PM Yea if I didn't have a table covered in turbos in the basement I still need to go through I'd probably have considered getting it myself, but I figured someone here probably needs it more than I do lmao. 22-Jun-19 04:40 AM hi someone with some CF 10" left overs? 22-Jun-19 04:40 AM double cross, cross, t ... 22-Jun-19 02:26 PM Heh... More like Elbows... 10" Conflat Crosses and Ts would be gold. 22-Jun-19 08:57 PM need more gold \o/ 23-Jun-19 01:16 AM or flanges? 23-Jun-19 01:16 AM i would take welding flanges too 23-Jun-19 01:16 AM and blind flanges of course 23-Jun-19 01:16 AM nothin against a sack of 10" blind flanges 23-Jun-19 01:18 AM oof, from what I can find even just the weld on flanges are 300 bucks 23-Jun-19 01:18 AM yeah brand new, right? 23-Jun-19 01:18 AM new, that is 23-Jun-19 01:19 AM i need it cheap! 23-Jun-19 01:19 AM for the mass analyser! 23-Jun-19 01:19 AM and the blind flanges are 400 bucks 23-Jun-19 01:19 AM xD 23-Jun-19 01:19 AM does it have to be CF, would ISO not do it? 23-Jun-19 01:20 AM all must be cheap for the masses \o/ 23-Jun-19 01:20 AM most mass spectrometers work at a terrible vacuum 23-Jun-19 01:20 AM hummm 23-Jun-19 01:20 AM i already have the drift zone in 10" inch 23-Jun-19 01:20 AM thats why 23-Jun-19 01:20 AM i mean any cheap adaptor would be welcome too 23-Jun-19 01:21 AM CF to iso adapters seem to be surprisingly uncommon 23-Jun-19 01:22 AM hmpf 23-Jun-19 01:23 AM I'm just asking, because ISO is extremely easy to make on the lathe 23-Jun-19 01:25 AM yep you're right 23-Jun-19 01:25 AM so i have to make adaptors 23-Jun-19 01:30 AM unless of course someone here has a huge sortiment of huge CF and wants to sell it for a symbolic euro 23-Jun-19 01:33 AM i would take them all 23-Jun-19 01:34 AM and yeah iso is easier to change esp for the cup holder 23-Jun-19 01:34 AM ISO is a great standard if you don't need below e-7, maybe e-8 23-Jun-19 01:37 AM i mean there are also quick cf derivatives but also super expensive and more complicated to make 23-Jun-19 01:37 AM maybe this thread aint swap-meet-ish enough 23-Jun-19 01:37 AM more ot or general? 23-Jun-19 02:09 AM sure, let's move to general 26-Jun-19 08:27 AM https://www.ebay.com/itm/MDC-vacuum-conflat-UHV-chamber-for-surface-science-deposition-amat-mks-hps/254267349409 26-Jun-19 08:27 AM Here's a heck of a piece of conflat. 26-Jun-19 08:27 AM TBH its a pretty reasonable price if you need a TON of ports. 26-Jun-19 08:29 AM oh wow 26-Jun-19 08:29 AM I wonder what it was, as most cf40 ports seem to point at a single point somewhat offcenter 26-Jun-19 08:41 AM Could be some weird laser stuff. It's what it reminds me of the most of. 27-Jun-19 09:03 PM they have 20% off till end of day tomorrow.. https://hgrinc.com/productDetail/Inspection/Used-Bal-tec-Etching-System/06190140014/ 27-Jun-19 09:03 PM so, $1600 US for ion etching 27-Jun-19 09:03 PM reads a diaphragm + TM pump inside the thing 27-Jun-19 09:03 PM could something like that be used to make MEMS? 27-Jun-19 09:03 PM just unfamiliar, it almost seems more like surface treatment 28-Jun-19 10:30 AM That ionizes argon and uses it like a belt sander, essentially 28-Jun-19 10:30 AM You slide a work piece into the slice of moving ions, it grinds it down on-edge 28-Jun-19 10:30 AM Mostly used for TEM sample prep or possibly failure analysis of semiconductors 28-Jun-19 02:43 PM it seems selective enough to make shapes though, but yeah, would likely take a while to get it to 'mill' enough 28-Jun-19 03:52 PM I think the only selectivity for shapes would be done through an aperture like a stencil 28-Jun-19 03:52 PM Otherwise it's probably just a curtain of ions that you push a sample into 05-Jul-19 09:18 AM I decided to sell my rigol DSA815-tg, not even three hours used but it's been standing around for some years, so no out of the box condition. asking for 800€, DM me if you're interested 07-Jul-19 03:22 AM https://www.ebay.com/itm/253398369778 08-Jul-19 12:29 AM https://www.ebay.com/itm/113695765135 A cheap neutron detector which has a good chance of being He3 08-Jul-19 05:04 AM <__ice9#6039> The eBay FEP bottle seller is back and I just ordered another dozen 08-Jul-19 05:04 AM <__ice9#6039> https://www.ebay.com/p/Thermo-Scientific-Nalgene-Narrow-Mouth-Bottles-Teflon-FEP-2-per-Case-1600-0064/3028987350 08-Jul-19 05:04 AM <__ice9#6039> $6 per 2L bottle plus shipping 08-Jul-19 05:04 AM <__ice9#6039> I have stored all kinds of horrible things in these and I can strongly assure you that they are 100% real 08-Jul-19 05:04 AM <__ice9#6039> This is roughly a 95% discount over typical sales prices and I have never seen any other comparable deal on these 08-Jul-19 05:04 AM <__ice9#6039> Separately: to update on my earlier messages about fluoropolymer coating dispersions: I am looking for a different Chinese seller who will deal in smaller volumes, since it looked like we might have trouble filling up a group buy at 25kg at their total all-in pricing 08-Jul-19 05:04 AM <__ice9#6039> Will update further if I find one that looks better 08-Jul-19 10:02 AM https://www.ebay.com/itm/NorCal-Products-Model-3TR-400-150-2-75-to-6-ConFlat-Flange-Reducing-Tee/264353830958 08-Jul-19 10:02 AM Probably fair to make an offer on this, a good 6"/2.75"/6" T 08-Jul-19 10:13 AM Anyone got a good source for PTFE standoffs? 08-Jul-19 10:23 AM PTFE is pretty cheap on ebay if you do not mind drilling your own holes 08-Jul-19 10:24 AM it's about soldering onto it 08-Jul-19 10:24 AM but I already found a cheap offer, my main issue was shipping from USA 08-Jul-19 10:24 AM https://www.ebay.com/itm/303069203632 08-Jul-19 10:25 AM Ahh that would be a bonus for me (the USA shipping) - what are you using those for? 08-Jul-19 10:27 AM got some resistors today 08-Jul-19 10:27 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190708_131224-4B44B.jpg 08-Jul-19 10:27 AM and soldering them into a PCB would result in less than half their rated resistance 08-Jul-19 12:31 PM ooo 08-Jul-19 06:53 PM We used to solder them directly together and put them in a glass tube to support them. Heck. They used to make the high value resistors in glass tubes. Victoreen had an extensive line of them. 10-Jul-19 12:41 AM https://www.ebay.com/itm/113812599960 A manual vacuum switch! 10-Jul-19 10:35 AM got one >u> 10-Jul-19 10:35 AM curious about using it in the open position as a triggered spark gap 10-Jul-19 01:51 PM terrible, if it's anything like the one I held in my hand 10-Jul-19 01:51 PM as the middle contact is just loosly geld by some bellows 10-Jul-19 01:51 PM plus I'm not sure about spark gaps in high vacuum... 10-Jul-19 01:56 PM You can have high vacuum spark gaps, actually occasionally used with the accelerator I am building, though it's under special circumstances lol 10-Jul-19 03:23 PM how does that work? 10-Jul-19 03:23 PM (let's move to #off-topic-thats-sometimes-on-topic ) 12-Jul-19 05:04 PM https://www.ebay.com/itm/MKS-Instruments-120AA-Baratron-Absolute-Capacitance-Manometer-120AA-00001RBJ/391437823638 Not sure if these work but the seller was willing to do $40 shipped if you are the gambling type like me. 15-Jul-19 06:24 AM https://www.ebay.de/itm/283548262486 26-Jul-19 11:13 AM @Conmega , can you pick this up for me from HGR? https://hgrinc.com/surplus/cnc/?all=0&view=&aisle=&from=&to=&last_chance=&markdowns=&newarrivals=&sort=&kw=datron&per_page=24&min_price=&max_price=&pn=1&search_type=manufacturer 26-Jul-19 11:20 AM Lmao I live in NY, also they will hold stuff for a month for free and charge some tiny fee for every month after that... 26-Jul-19 11:20 AM Just buy it and go pick it up when you can 26-Jul-19 11:24 AM ] ` 26-Jul-19 11:25 AM ? 26-Jul-19 11:25 AM Oops, sorry, I was cleaning my keyboard. 27-Jul-19 11:34 AM holy chamber batman! https://www.ebay.com/itm/Vacuum-Chamber-and-Stage-FIB-Experimental-Research-SEM/153440493782 28-Jul-19 01:06 PM I like the idea of cubic chambers over cylindrical for some reason 29-Jul-19 04:24 AM <__ice9#6039> FYI if you need a decent chemical vacuum diaphragm pump (low vacuum) for Buchner funnel vacuum filtration or vacuum distillation, these are pretty decent if you run the two vacuum heads in series 29-Jul-19 04:24 AM <__ice9#6039> Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/1564399445082-2D51D.png 29-Jul-19 04:24 AM <__ice9#6039> All you need to do that is some 6x4mm PTFE tubing 29-Jul-19 04:24 AM <__ice9#6039> These seem to manage about -85kPa to -90kPa or so if everything is sealed properly. Considering dedicated lab vacuum diaphragm pumps typically sell for at least $150-200 used and usually aren't even any better than that vacuum-pressure-wise, this is a very reasonable option. 29-Jul-19 04:24 AM <__ice9#6039> The internals are somewhat less resilient, but in practice this hasn't had any actual consequences for me. Just don't let them suck up any liquids and they should be fine. 29-Jul-19 04:24 AM <__ice9#6039> I have run cheap pumps like this on all kinds of ridiculous things including distilling off halogenated solvents, distilling fuming nitric acid, filtering off leftover solvents and strong oxidizing agents, etc., and nothing happened 29-Jul-19 04:24 AM <__ice9#6039> Use an extra flask in the middle with a vacuum take-off adaptor if you want to be extra careful about preventing liquid intake 29-Jul-19 04:24 AM <__ice9#6039> Hmm wow that chamber is rather tempting. I have probably too many ongoing projects already though.... 29-Jul-19 04:24 AM <__ice9#6039> Ah yeah gigohm resistors are actually pretty helpful for making your own high voltage multimeter or oscilloscope probes. Important to have big long ones rated for something like your target voltage level. For the latter you also need them to be axial and relatively non-inductive though (no wire-wound ones allowable). 29-Jul-19 04:24 AM <__ice9#6039> There are a lot of cheap ones from the former USSR on eBay if you are willing to calibrate a bit 29-Jul-19 04:24 AM <__ice9#6039> I have successfully measured DC voltages above 20kV with them without any equipment damage (or wallet damage from overpriced HV probes). Haven't needed to check anything higher yet with much precision, but my main one should theoretically do about 50kV. 29-Jul-19 04:24 AM <__ice9#6039> Hmm I got my BOC Edwards DN100 ISO-K turbopump for about $350 with a rudimentary controller attached and then built my own interface to it. Magnetic bearings and almost totally silent. There are definitely cheap options available that do not necessarily require a rebuild. But there is perhaps some luck or patience involved. I sniped an auction and it arrived in very good condition. 29-Jul-19 04:24 AM <__ice9#6039> Idk ymmv 29-Jul-19 07:48 PM I think the difference here is the volume those pumps can move, I haven't really looke dat any of the specs, but I woudl be weary of anything that runs off of 12v (I do have some flourocarbon based mini 24v diaphragm pump - which is my reference.. it would be fine fora little buchner, but not ultra high vacuum of a large chamber).. I use two GAAST pumps in series for distillation, and get ~50 torr 29-Jul-19 07:48 PM also, some pumps are design for pressure, not vacuum 29-Jul-19 10:42 PM <__ice9#6039> Certainly. I mentioned chemical uses for filtration and acid or solvent distillation. It works well for these. I have much more powerful ones for chambers. 29-Jul-19 10:42 PM <__ice9#6039> Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/1564465477571-5C2A4.png 29-Jul-19 10:42 PM <__ice9#6039> Unrelated, passing along from a recommendation to @Applied_Ion on Twitter just now -- this stuff is excellent cryogenic epoxy 29-Jul-19 11:23 PM Better than torr seal? 29-Jul-19 11:23 PM Or different applications? 30-Jul-19 04:28 AM <__ice9#6039> Not sure. Not aware of any comparative data. I think I may try that as well, though. 30-Jul-19 04:28 AM <__ice9#6039> 2216 is flexible and tends to handle variations between thermal expansion coefficients well. It's also fairly affordable and available. Cost difference looks like maybe 5:1 if I am getting this right, but not sure. Where is your preferred source for it? 30-Jul-19 04:28 AM <__ice9#6039> I do not think 2216 is designed for UHV per se, though I did manage to pump a rather large chamber with quite a lot of it inside down to below 50 microns a while ago. I'm still not actually sure what the final equilibrium pressure was. I need to install the hornet ionization gauges mxqualia informed me about (prior to that, I had not realized they were so suitable). 30-Jul-19 04:28 AM <__ice9#6039> That test run pinned my existing gauges to their minimums. Better instrumentation needed. Still waiting on another flanged fitting to include them atm. 30-Jul-19 04:28 AM <__ice9#6039> Interestingly, if you just need a very-low-vapor-pressure coating for some other material, sodium silicate can sometimes be a suitable option. After drying and subsequent bake-out, it transforms into silica gel. 02-Aug-19 10:46 AM I haven't used it myself yet, but I believe Hysol 1C is the cheap alternative and is functionally identical(sometimes better) to TorrSeal 02-Aug-19 11:13 AM Might as well ask here, just in case someone has this stuff. I'm looking for: 1. A microfocus x-ray source. One of those Hamamatsu/Kevex/Oxford/Glenbrook heads with or without a controller would be great, especially if they're under 50 microns. I'm building an x-ray microtomograph/transmission x-ray microscope with a Hamamatsu C9732DT as the main sensor, and possibly an old SiLi XRF system bolted on the side(with a collimator) to do some basic elemental analysis. 2. High vacuum parts - specifically, an ISO160 or ISO100 tee, lids, and an ISO160 to KF... 40 or KF50 adapter. I'm planning on using a tee as the main vacuum chamber for my projects, as some have already done here. I have a Pfeiffer TPH-060 turbo with a DIY controller and a couple vacuum gauges. I have for trade or sale(preferably trade!): 1. A brand new, unused C.E.I OX-70/g4 75kV 0.4mm focus dental tube. I don't want to use it, since the focus is gigantic(for my application), and I have some bare Soviet microfocus tubes, but I don't want to deal with building a 100kV 10W supply at the moment. 2. A soviet BS10 microfocus tube. I don't know what the voltage or focus ratings are, but judging by the size of the tube and its bigger brother(BS6), I reckon it'll take around 25-45kV with a focus of maybe 35-80 microns. Made for grounded anode, negative cathode operation, with a separate wehnelt pin, not connected internally. Filament works, tube emits a slightly blurry image when driven at 20kV and an incorrect wehnelt resistor. ~2-5um thick beryllium output window, works from ~10kV. 3. One or two working STE Radiation Pagers - these are great for telling you if you have a surprise x-ray leak(but not good for leak finding!), or for hopping around flea markets/scrappers. Very sensitive pocket-sized scintillator counters with an alarm and search mode. Lasts a year on two AAs. I can also more or less easily obtain Soviet stuff, given that I live in Belarus. Things like neutron counting tubes and the like. 02-Aug-19 11:18 AM @george that sovjet microfocus might be worth a try in your thingy 02-Aug-19 11:44 AM https://www.ebay.com/itm/Lindberg-Lab-Tube-Furnace-with-Controller/173980516115 02-Aug-19 11:44 AM For someone in Florida who can pick up locally this would be a steal at the starting bid of 75 bucks! 02-Aug-19 12:52 PM Hmm, I could swear i saw a furnace like that (maybe the same one??) For $238ish buy it now, i think shipped too 02-Aug-19 12:53 PM oh wow, with the tube inside and everything? 02-Aug-19 12:53 PM https://www.ebay.com/i/233015264201?_trksid=p11070.c100829.m5022&_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D1%26asc%3D20170705152654%26meid%3Dfc8b999ae532407397dbed1fbcb28340%26pid%3D100829%26rk%3D1%26rkt%3D4%26b%3D1%26sd%3D352610340003%26itm%3D233015264201&ul_ref=https%253A%252F%252Frover.ebay.com%252Frover%252F0%252Fe11070.m5022.l2648%252F7%253Feuid%253Decd3956934fb4f3b97623a16bd2b827c%2526bu%253D43132206142%2526loc%253Dhttps%25253A%25252F%25252Fwww.ebay.com%25252Fulk%25252Fi%25252F233015264201%25253F_trksid%25253Dp11070.c100829.m5022%252526_trkparms%25253Daid%2525253D222007%25252526algo%2525253DSIM.MBE%25252526ao%2525253D1%25252526asc%2525253D20170705152654%25252526meid%2525253Dfc8b999ae532407397dbed1fbcb28340%25252526pid%2525253D100829%25252526rk%2525253D1%25252526rkt%2525253D4%25252526b%2525253D1%25252526sd%2525253D352610340003%25252526itm%2525253D233015264201%2526exe%253D21768%2526ext%253D56569%2526es%253D0%2526nqc%253DQAAABAAAAAAgQAAEABAAAAIAAAAAIAAAAAACAAAAASAAAEAAAAAAAAEAAAAAAAAAAIAQAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAACEAAAAAAAAAAACAAAACAAABAAAAAAIAIACAAAAAAAAAAAAEAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAI*%2526nqt%253DQAAABAAAAAAgQAAEABAAAAIAAAAAIAAAAAACAAAAASAAAEAAAAAAAAEAAAAAAAAAAIAQAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAACEAAAQAAAAQAACAAAACAAATAAAAAAIAIACAAAAAAAAAAAAEAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAI*%2526ec%253D1%2526sojTags%253Des%253Des%252Cnqc%253Dnqc%252Cnqt%253Dnqt%252Cec%253Dec%252Cexe%253Dexe%252Cext%253Dext%252Cbu%253Dbu%2526srcrot%253De11070.m5022.l2648%2526rvr_id%253D0%2526rvr_ts%253D707e315c1690aca4a753ac6affe5c485&ul_noapp=true 02-Aug-19 12:53 PM because that would be great 02-Aug-19 12:53 PM Oh god 02-Aug-19 12:53 PM Sorry 02-Aug-19 12:53 PM ah heh no tube 02-Aug-19 12:53 PM see the problem is that quartz tube will run you hundreds of dollars 02-Aug-19 12:53 PM furnaces are basically useless without them 02-Aug-19 12:53 PM especially larger ones 02-Aug-19 12:53 PM Ahh 02-Aug-19 12:53 PM price is EXPONENTIALLY higher for larger diameter 02-Aug-19 12:53 PM Didn't realize 02-Aug-19 12:54 PM yea, don't fall into that trap haha 02-Aug-19 05:04 PM I found an amazing vacuum chamber with a bunch of goodies inside for relatively cheap 02-Aug-19 05:04 PM https://www.ebay.com/itm/Huntington-28-Vacuum-Chamber-w-Gate-Valve-Stand/391942165101 02-Aug-19 05:04 PM Looks like there's even a cryopump attached! 02-Aug-19 05:04 PM sadly I'm not going to be going for this lot, because it'd break my back, my family, and my wallet to ship this over to Belarus 02-Aug-19 06:23 PM DANGGGGG 02-Aug-19 06:23 PM thats nice 02-Aug-19 06:23 PM too bad its far... 04-Aug-19 01:22 AM @Conmega are you sure about the price of a tube? i got a 2" tube for mine at 90€/1.5m, thats not to bad and its regular price, not some luckshot. 04-Aug-19 01:26 AM oh hrm, I suppose thats not too bad, I had seen prices about 3-4 times that... 04-Aug-19 01:26 AM So sources would be great to know about! 04-Aug-19 01:32 AM https://www.g-v-b-shop.de/quarzglas/roehren-staebe/1814/quarzglasroehren-d-050-2-5-1500mm-en07?c=210 04-Aug-19 01:32 AM if germany is no problem to you ^^ 04-Aug-19 01:47 AM Shipping is probably a problem for US people? 04-Aug-19 01:53 AM they only list shipping prices to european countries but i guess the could pre cut it so it could be affordable 04-Aug-19 01:53 AM but i guess there has to be some affordable seller in the us 04-Aug-19 01:53 AM maybe difficult to find but i cant imagine you gys not having something similar. 04-Aug-19 03:33 AM http://www.technicalglass.com/product_pages/fused_quartz_tubing/fused_quartz_tubing.html 04-Aug-19 03:33 AM Would this work? They sold three pieces of custom machined fused quartz tubes to me at really affordable prices 04-Aug-19 03:33 AM It's essentially the same price as that from the european supplier, like just over $100 for 1.5 meters. They do hold their tolerances very well too 04-Aug-19 03:41 AM Good to know! Thanks! 04-Aug-19 06:21 AM <__ice9#6039> I found a better FEP supplier. They also warned me about current quality of most extrusion molding grade PFA in China, so planning to stick with FEP for now. They also have pretty cheap PVDF resin, which is also melt processible. Pricing looks likely to be about $10-12/kg but with a smaller minimum order size. And I own some fairly nice 3d printing and filament extrusion hardware now so I am comfortable buying more than I was before. Will keep updating. 04-Aug-19 06:21 AM <__ice9#6039> Will be examining their full catalogue for material grades shortly. Aiming for something with a melt flow rate ISO standardized test result around 10g/min and resistance to stress cracking. This should make it suitable for 3d printing. 04-Aug-19 06:21 AM <__ice9#6039> FEP has extreme chemical resistance basically equal to PTFE, similar cryogenic flexibility and impact strength down to nearly absolute zero, and can be melt processed with a melting point of 260C and recommended extrusion die temp about 300-320C. It is somewhat corrosive on melting and needs ventilation, but copper is pretty easily passivated against fluorides. In fact my HF reactor is made entirely of copper, with pure lead to seal the joints. 04-Aug-19 06:21 AM <__ice9#6039> It's also transparent, so you can 3d print beakers and flasks and such out of it 04-Aug-19 06:21 AM <__ice9#6039> It needs a pretty high end or heavily modified printer to work, though you can also just cast it or use injection molding or etc etc if desired 04-Aug-19 07:26 AM <__ice9#6039> The thickness of the flanges of that 28-inch chamber is astounding. 04-Aug-19 07:26 AM <__ice9#6039> I brought a 6mm aluminum stockpot 24 inches in diameter to high vacuum and they have what looks like well over 30mm of stainless.... 04-Aug-19 07:26 AM <__ice9#6039> It must weigh a thousand pounds 05-Aug-19 10:11 AM @Mason_Yu I see they have a separate page for quartz tubing for semiconductor stuff, says low contamination of less than 25ppm... No prices there though 05-Aug-19 11:41 AM Yea I know that can be a big problem for semiconductor stuff, is contamination in the quartz working its way onto the wafers when heated. 05-Aug-19 11:41 AM Probably just new quartz will be better than what we need for most basic semiconductor stuff. 05-Aug-19 11:41 AM But yea no prices there is probably because it costs WAY MORE lol 05-Aug-19 11:54 AM Yeah, I didn't order anything with special tolerances or impurity contents. No idea how much the semiconductor grade quartz tube cost. It seems their company does a lot of custom fabrication and will do low volume orders but the standard size tubes gets by far the best value 06-Aug-19 02:20 AM <__ice9#6039> Ok I just actually started an order for 25kg of high melt flow index FEP resin and 6kg of PVDF (though they only had H type instead of C so will be a bit experimental). Unit cost was about $11-12/kg, shipping bundled only $180; bulk deal as the alternative was paying same amount for less material and more shipping cost. It needs an enclosure and an all-metal hotend to 3d print it, but you can make an enclosure very cheaply by just bolting some coroplast around the frame of the printer. 06-Aug-19 02:20 AM <__ice9#6039> Once my filament extruder is set up and the resin arrives, I should be able to update with more info on filament. 06-Aug-19 02:20 AM <__ice9#6039> Currently there is almost no global supply of FEP filament, with one spool with shipping costing nearly as much as the price of my printer before modifications. 06-Aug-19 02:20 AM <__ice9#6039> If this works, I will be willing to sell off a few spools of it for much less if anyone else wants some. I don't think I will use 25kg of material myself for a very long time. Just keep in mind that it needs a printer enclosure, all-metal hotend, fume exhaust through a few of those cheap soldering fume carbon filters or similar, and should be printed ideally onto a sheet of FEP itself (though I intend to experiment with simpler and cheaper methods, like just using higher heatbed temp on glass). 06-Aug-19 02:20 AM <__ice9#6039> Total order cost was like $540 or something. Also if anyone wants any bulk resin I wouldn't mind reselling some. Message if interested. 06-Aug-19 02:20 AM <__ice9#6039> The benefit is that you can make fully custom parts for cryogenics and extreme chemical exposure, with pretty decent thermal tolerance. You could literally distill hydrofluoric acid in this stuff, and it stays flexible down to nearly absolute zero. 06-Aug-19 02:20 AM <__ice9#6039> I live in Chicago USA 06-Aug-19 11:53 AM Cool! 06-Aug-19 03:43 PM https://www.ebay.com/itm/OERLIKON-LEYBOLD-800160V0021-TURBOVAC-TW290-20-20-UHV-mit-TURBO-DRIVE-TD400/392358463473 06-Aug-19 03:43 PM No flange(funky custom mass spec connection), but seems to be old stock and comes with a controller. Good deal, maybe? 06-Aug-19 03:47 PM Tempting, even with the weird connector. 06-Aug-19 03:47 PM yep 06-Aug-19 03:47 PM it seems to have two "flanges" on top of each other 06-Aug-19 03:47 PM maybe something to do with a high and low level vacuum 06-Aug-19 03:47 PM inner tube goes low, outer tube goes high 07-Aug-19 12:40 AM @george made a CAD for a new housing for the pump 07-Aug-19 12:40 AM and made one himself 07-Aug-19 12:40 AM those Pumps are for mass spectrometers 07-Aug-19 09:10 AM Definitely worth the money then 07-Aug-19 12:09 PM By the way i have one useless Leybold TW 400/300 pump, it has 3 high vacuum output stages. I'd like to swap it to ISO100 stainless VAT gate or valve. 07-Aug-19 12:09 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_2974-25788.JPG 07-Aug-19 12:33 PM That's not useless! Could just blank off the bottom two. 07-Aug-19 12:35 PM Useless for me because i have some usual turbopumps and i don't want to spend money to make a housing for this one 07-Aug-19 12:41 PM Why would a mass spec want different vacuum levels? 07-Aug-19 12:42 PM Probably something to do with flow and extraction and whatnot 07-Aug-19 12:53 PM https://i.spirit.re/graq5.png 07-Aug-19 12:53 PM Here's the TW400/300 07-Aug-19 12:53 PM Three turbomolecular inlets, one Howleck inlet. 07-Aug-19 12:56 PM Doesn't really answer the "why" question though.... i.e. Why not just high vac immediately 07-Aug-19 12:59 PM I think because the initial particle beam forms in bad vacuum conditions and it is difficult to put it directly in HVac chamber 07-Aug-19 12:59 PM too big pressuere difference 07-Aug-19 01:04 PM Mmm, yeah maybe the ionizer needs lower vac... Or even along a quadrupole the ions that don't make it through need removed if they dont plate/deposit on the interior surface 09-Aug-19 10:43 PM I might have gotten 5 kilograms of krytox GPL-206 at much less than market rates 09-Aug-19 10:43 PM If anyone is interested in getting more than 500 grams at a discount, let me know 10-Aug-19 07:03 AM huh, good thing. How can i get some? 10-Aug-19 08:06 AM Just DM me and I'll mail some to you 10-Aug-19 08:06 AM $400 per kilogram 10-Aug-19 08:06 AM (I can sell any quantity, as long as it's more than 500 g) 12-Aug-19 03:16 PM Here's some beryllium windows i have for sale. Few 100x160mm 0.3mm thick for $100 each and few 100x200 mm 0.5 mm thick - $150. 12-Aug-19 03:16 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_3007-3E661.JPG 12-Aug-19 03:16 PM in a couple of weeks i'll get some big special x-ray counters with the same windows. 12-Aug-19 03:16 PM Plus i have some ordinary russian counters and i can let the price lower that on ebay. 12-Aug-19 03:25 PM 0.3 and 0.5 is quite thick 12-Aug-19 03:25 PM But those prices are pretty unbeatable 12-Aug-19 03:27 PM Full counters list: 12-Aug-19 03:27 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-24F58.png 12-Aug-19 03:27 PM And some russian PMTs in addition. 12-Aug-19 03:27 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-4D744.png 12-Aug-19 03:33 PM I have a prototype soviet PMT 12-Aug-19 03:33 PM Probably useless, but neat to have in my collection 12-Aug-19 03:37 PM Gm, here is one monster PMT prototype i have - 12-Aug-19 03:37 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/photo_2019-04-10_20-31-02-BC4E3.jpg 12-Aug-19 03:37 PM I have one as well! 12-Aug-19 03:37 PM though it's not a prototype 12-Aug-19 03:37 PM ФЭУ-49 12-Aug-19 03:38 PM it was new in box but without any marks and documentation 12-Aug-19 03:38 PM yeah, it's probably a 49 or 49b 12-Aug-19 03:38 PM NIB here too 12-Aug-19 03:38 PM they're all over eBay, around $30 a piece 12-Aug-19 03:38 PM not great for spectroscopy, but good for counting 12-Aug-19 03:38 PM they were made in huge numbers for the Soviet neutrino/muon observatories 15-Aug-19 01:41 PM https://www.ebay.com/itm/Ultra-High-Vacuum-Surface-Son-Of-Ghostbusters-System-LEED-100-AMU-SRS-RGA/143356940784 15-Aug-19 01:41 PM Man if someone in Texas needs a nice chamber 15-Aug-19 02:51 PM whoa 15-Aug-19 02:51 PM adds 'ghostbusters' to vacuum hardware saved search keywords 15-Aug-19 02:58 PM Anyone need 1.2 Million pounds of molecular sieve 13X? 15-Aug-19 02:58 PM https://www.ebay.com/itm/Hengye-13X-Molecular-Sieves-1-2-Million-LBS/183804838124 15-Aug-19 04:57 PM 1.3 cents per kg 15-Aug-19 04:57 PM why is it so cheap? 15-Aug-19 05:41 PM Says in the description that it was for some failed product or something 15-Aug-19 05:41 PM they want it gone clearly XD 15-Aug-19 05:41 PM buy it and resell it to the petroleum industry 15-Aug-19 06:10 PM buy a ton for everyone 15-Aug-19 06:10 PM that's only going to cost you nothing :P 15-Aug-19 06:10 PM (+ shipping and handling) 16-Aug-19 06:47 AM le me moves to texas 16-Aug-19 11:16 AM https://www.ebay.com/itm/Ionizing-Radiation-X-ray-Source-Sputtering-Deposition-Ancorp-High-Vacuum-Flange/323881226831 16-Aug-19 11:16 AM Mmmm anyone need a conflat xray source? 16-Aug-19 11:36 AM I need a microfocus x-ray source :< 16-Aug-19 11:50 AM me too ️ 16-Aug-19 11:50 AM don't we all? 16-Aug-19 12:10 PM Hey, at least I have the sensors necessary to utilize its full resolution :P 16-Aug-19 12:20 PM If I get a old tem column I'm going to cut the condenser and alignment drift section off and turn it into a 120kv micro focus system 16-Aug-19 12:36 PM Wouldnt it be possible to use a vidicon tube or something similar? 16-Aug-19 12:36 PM i guess its pretty ok to have a turbo running on some improvised setup 16-Aug-19 12:37 PM high end x-ray systems are usually continuously pumped 16-Aug-19 12:37 PM or you ask some glas blowing guy to attach a HV feedthrouugh and a new evac port 16-Aug-19 12:37 PM yxlon, feinfocus 16-Aug-19 12:37 PM jup, i learned that recently 16-Aug-19 04:46 PM Vidicon tube for microfocus xray? 16-Aug-19 04:46 PM I have a handful of tunes... 17-Aug-19 12:58 AM but can vidicons support more than let's say 10 kV? 17-Aug-19 04:42 AM could one build a decent micro source from a sem column? 17-Aug-19 06:17 AM well, the vidicon itself cant but tats why im talking about fitting a new end to it with a larger chunk of copper 17-Aug-19 06:17 AM the rest of it houldnt care about the anodes potential 17-Aug-19 08:57 AM A vidicon tube wouldn't work due to the acceleration voltages 17-Aug-19 08:57 AM You couldn't focus the high energy beam since it'd just arc over between the electrostatic plates 17-Aug-19 08:57 AM And a SEM column is already a microfocus source @N00N 17-Aug-19 08:57 AM that's why they have radiation marks on them :P 17-Aug-19 08:57 AM nanofocus technically 17-Aug-19 09:05 AM but why? just chop off the front and use the elctron gun 17-Aug-19 09:05 AM no short distances any more 17-Aug-19 09:05 AM or use the gun out of some old oscilloscope or television 17-Aug-19 09:05 AM not as great of a focus but definetly no problem with arcovers 17-Aug-19 09:07 AM you can chop everything off 17-Aug-19 09:07 AM but at that point you have a filament and uncomfortable wehnelt 17-Aug-19 09:17 AM bu wouldnt i only have to remove the optical front and the anode grid infront? 17-Aug-19 09:17 AM maybe i dont remember vidicons the right way 17-Aug-19 09:18 AM the deflection optics would be useless at useful x-ray acceleration voltages 17-Aug-19 09:18 AM though i actually wonder now how tightly a normal oscilloscope tube could be focussed 17-Aug-19 09:18 AM mhhhh ok, thats true 17-Aug-19 09:18 AM and mooving the anode further away will turn the deflection parts more into some kind of energy filter smuging everything 17-Aug-19 09:19 AM electrons will always be at acceleration voltage 17-Aug-19 09:19 AM the x-rays turn into a curve 19-Aug-19 08:52 AM https://www.ebay.com/itm/183739106216 This just makes me want to cry 19-Aug-19 08:56 AM Because you are not in Florida? 19-Aug-19 08:59 AM yes 19-Aug-19 09:14 AM https://www.ebay.com/itm/321531321702 @Conmega this might fit over your coldhead 19-Aug-19 02:39 PM yeaaa this stuff is everywhere, and yea thats big enough but proibably not deep enough to be useful? 19-Aug-19 02:39 PM I'll probably just get a 10-30L dewer with a large opening 19-Aug-19 03:03 PM just make your own 19-Aug-19 03:03 PM :P 19-Aug-19 03:03 PM you've got vacuum 20-Aug-19 12:29 AM https://edispositions.com/auctions/#/sales/86110/lots I want it all. 20-Aug-19 01:18 AM I want some of it. 20-Aug-19 01:18 AM But the starting bids on a lot of them are too high for hobby stuff 22-Aug-19 10:13 PM If anyone wants an MKS 901p piezo/pirani meter(1000 to 1*10^-5), this guy has sold over 40 of them and still has more than 10: https://www.ebay.com/itm/MKS-901P-11040-MicroPirani-Piezo-Loadlock-Vacuum-Pressure-Transducer-with-Seal/202636260062 22-Aug-19 10:13 PM (not affiliated, bought one myself) 22-Aug-19 10:39 PM Yup thats where most of us have been getting them. Thats where I've bought a few from 22-Aug-19 10:48 PM I bought one, since I already have a PPT-100 and an IGM-400 for high vac 22-Aug-19 10:55 PM Yea I also have the IGM-400 but they won't be around on eBay forever I don't think 22-Aug-19 10:57 PM I bought the last one from the massive listing of the guy selling them off for $12.95 22-Aug-19 10:57 PM But there's a few for $20-30 all around the world 23-Aug-19 06:05 AM The shipping of that sensor is more than the price of the device, is it really a good buy? 23-Aug-19 06:05 AM I've looked for IGM-400's but the few I see on ebay don't ship to me. 23-Aug-19 07:54 AM Just bought one of those 901p sensors. Now I gotta dig up a 15 pin connector for it. 23-Aug-19 09:52 AM 43eur shipping on a 36eur sensor is a bit meh. 23-Aug-19 09:52 AM @Charles Ain't that a HD15, aka the VGA connector? 23-Aug-19 09:52 AM Those should be cheap and plentiful. 23-Aug-19 09:58 AM Yes they are. Standard DE15 and I know I have some somewhere in storage, but I would have to dig, and I will feel bad to buy a new one when I know I have one already somewhere. 23-Aug-19 10:48 AM @rfs find a reshipping service! 23-Aug-19 10:48 AM I use one specific to my country, but it's much cheaper than USPS or eBay Global Shipping for small packages. 23-Aug-19 10:48 AM I'm expecting to pay ~$10-15 for shipping the 901p once it's at their warehouse 23-Aug-19 10:48 AM @ali_as same suggestion, and the IGM-400 is definitely worth it. A dirt cheap and fairly reliable ion gauge. 23-Aug-19 02:21 PM I wish there was cheap one for large packages. I'm tempted by large lots of cheap radios from time to time. 23-Aug-19 03:15 PM How do you interface with the IGM-400? 23-Aug-19 03:16 PM analog output 23-Aug-19 03:18 PM https://gigabecquerel.wordpress.com/2019/05/22/reverse-engineering-the-instrutech-igm-400-hornet-gauge/ 23-Aug-19 03:18 PM there's also this 23-Aug-19 03:18 PM https://github.com/NiklasFauth/IGM-400/blob/master/IGM-400.ino 24-Aug-19 06:11 AM stm32 24-Aug-19 06:11 AM le me uses stm32 is i wanted to say ^^ 24-Aug-19 06:11 AM simply a blue pill without the nice display and controll stuff of niklasfauth' interface 24-Aug-19 08:10 AM https://www.cryoandmoreshop.de/products/laboratory-essentials/supplies/ If anyone needs indium seals 29-Aug-19 10:44 AM https://www.ebay.com/itm/254334597119 Isn't it just the cutest little 29-Aug-19 11:01 AM Yea that guy I think has been posting a lot of tiny little ION pumps guess some company that makes them liquidated or something and he has a ton of them. 29-Aug-19 11:04 AM http://www.rtftechnologies.org/ (for those who don't know that guy) 29-Aug-19 11:12 AM I want one just for fun 29-Aug-19 11:12 AM They're probably meant to be used in instruments, as an active permanent vacuum keeper dingus 29-Aug-19 11:12 AM Manufacture the dingus, suck it out, bake, seal it off, and then just keep the ion pump on as part of the final instrument 29-Aug-19 11:20 AM Yup they commonly use tiny Ion pumps like that on EDS heads 29-Aug-19 11:45 AM CT scanner has the MATLAB logo on it. Haha! 29-Aug-19 11:55 AM it's a DX-50 tissue sample x-ray machine 29-Aug-19 11:55 AM to which he glued a matlab CBCT transform 29-Aug-19 06:52 PM My MKS 901P from eBay arrived. I have a 15 pin break out adaptor inbound to hook it up. Gotta build up a system to put it on and try it out. 29-Aug-19 07:08 PM mine arrived at the reshipper 29-Aug-19 07:08 PM now I have to wait another month for it to actually arrive here 29-Aug-19 07:08 PM you can also talk to it via RS232 for an accurate reading 29-Aug-19 07:08 PM since the analog output is driven digitally 29-Aug-19 07:43 PM Hmmmmm.... would be nice to have a digital read out, but just an old panel meter is so easy. Decisions decisions. I wonder if it’s true RS232 or just kinda fake TTL serial. 29-Aug-19 07:45 PM https://www.mksinst.com/mam/celum/celum_assets/resources/HPS901man-REVI.pdf 29-Aug-19 07:45 PM it also has free software you can download 29-Aug-19 07:45 PM to drive from a PC 29-Aug-19 07:45 PM https://www.mksinst.com/medias/sys_master/root/h77/h49/9153659568158/MKSVacuumLogger141.zip 29-Aug-19 07:45 PM https://www.mksinst.com/medias/sys_master/root/h8b/h2e/9153659797534/MKS900SeriesV1-6-4-20112.zip 29-Aug-19 07:45 PM these two 30-Aug-19 12:52 AM Let's move this to #general or #off-topic-thats-sometimes-on-topic , please 03-Sep-19 01:17 AM Juat bought one of these with a bunch of other stuff from them tonight https://www.goldmine-elec-products.com/prodinfo.asp?number=G24061 03-Sep-19 03:21 AM https://www.ebay.de/itm/312752067113 03-Sep-19 05:02 AM sheiiit 03-Sep-19 05:06 AM I know, right? 03-Sep-19 05:12 AM hmmmp 03-Sep-19 05:12 AM cant resist 03-Sep-19 05:12 AM but have to waiit 03-Sep-19 05:12 AM .o( forklift zapper) 03-Sep-19 10:14 PM now that I've packaged and labelled all of it, a reminder that I'm selling Krytox GPL-206 for 40 cents / gram (market price is 50 cents / gram) 03-Sep-19 10:14 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190903_220653-CF263.jpg 03-Sep-19 10:20 PM cryogenic lube? 03-Sep-19 10:20 PM oh no, high temp 03-Sep-19 10:20 PM huh 03-Sep-19 10:34 PM it's good up to 500 F 03-Sep-19 10:34 PM it's literally teflon powder in PFPE oil 04-Sep-19 08:57 AM mmmm 04-Sep-19 04:55 PM @taktoa next time we bump into eachother i'll take a jar :o 04-Sep-19 04:55 PM are they all 100g? 04-Sep-19 04:56 PM yeah 04-Sep-19 04:56 PM ok cool 04-Sep-19 04:56 PM well one is 50 g but I have a specific buyer for it 07-Sep-19 06:30 PM If anyone sees anything here that they are interested in, let me know. I get to go pick through a lot of this stuff so let me soon and I should be able to get some good deals. Not pictured is a bunch of RGAs and way more vacuum hardware so if you're looking for something specific let me know 07-Sep-19 06:30 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/MVIMG_20190624_211149-E2B70.jpg 07-Sep-19 06:32 PM Can I say yes? 07-Sep-19 06:41 PM To be slightly more realistic: 1) Anything x-ray related. HV PSUs(preferably above 70kV), microfocus tubes 2) A dirt cheap RGA(to play with leak detection) 3) KF feedthroughs, multipin and HV 4) Also very cheap mass flow controllers(N2, O2, Ne, He?) 5) Solenoid-operated KF16 valves 6) Maybe a scrap SEM column if it doesn't cost a kidney to ship 07-Sep-19 06:41 PM I can't think of anything besides this at the moment, so if you see any of this, feel free to poke me here or in PM 07-Sep-19 06:41 PM I'd also say vacuum chambers, but that's asking to be scalped by international shipping rates, so I won't say vacuum chambers 07-Sep-19 06:41 PM Though that teeny weeny chamber that's sitting on top of the giant tube in the bottom left is interesting 07-Sep-19 06:44 PM I'm interested in multipin or coax feedthroughs in 2.75" or 4.5" CF flange. Also what's that Keithley meter on the shelf? 07-Sep-19 06:44 PM Also there's a bunch of MFCs 07-Sep-19 06:44 PM A set of dirt cheap MFCs would be nice, but I don't need them and they're for experiments that would be very far away, so I can't bring myself to spend $50-90 each on a set for all the fun gases 07-Sep-19 06:45 PM Are these vacuum caps? Especially variable vacuum caps? 07-Sep-19 06:45 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-EBAE1.png 07-Sep-19 06:45 PM I'm not on site right now but il check on all this stuff you all are asking 07-Sep-19 06:45 PM I'm probably heading down next week 07-Sep-19 06:45 PM They could be I'll ask 07-Sep-19 06:46 PM Vacuum heaven looking to free up some storage space? :P 07-Sep-19 06:47 PM Yeah pretty much 07-Sep-19 06:47 PM Not pictured is all the stuff I have already claimed 07-Sep-19 06:47 PM Hah 07-Sep-19 06:47 PM Some day I want to be at this point myself 07-Sep-19 06:47 PM Getting rid of science gear 07-Sep-19 06:48 PM Also, this looks like Tektronix-y green 07-Sep-19 06:48 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-65103.png 07-Sep-19 06:48 PM Also there's a FEI 611 FIB for sale 07-Sep-19 06:49 PM I would try convincing my friends but I'm afraid we're all cheap 07-Sep-19 06:49 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20190619_172320-25CBA.jpg 07-Sep-19 06:49 PM So if anyone is looking for a rebuilt fib, here you go 07-Sep-19 06:50 PM first thing I see when looking for a 611 is a youtube video of some Russian dude with a FIB in his bathroom 07-Sep-19 06:53 PM Also if someone is looking for a thermal evaporator 07-Sep-19 06:53 PM Or 2 07-Sep-19 06:53 PM Also a big pvd I think 07-Sep-19 06:53 PM if only shipping was cheap 07-Sep-19 06:53 PM A bunch of test gear 07-Sep-19 06:53 PM and I had space 07-Sep-19 06:53 PM Just basically anything 07-Sep-19 06:53 PM Oh and optics stuff 07-Sep-19 06:53 PM Lots of optics and lasers 07-Sep-19 06:54 PM x-ray stuff is my goal 07-Sep-19 06:54 PM I need to put this huge hamamatsu detector to work 07-Sep-19 06:54 PM Lol 07-Sep-19 06:54 PM I don't think there's much x Ray 07-Sep-19 06:59 PM I'm interested in a pulsed laser with ns pulse width, like Nd:YAG or any solid-state lasers. I don't have a huge budget though 07-Sep-19 06:59 PM Flashlamps would also be nice 07-Sep-19 06:59 PM Q-switches too 07-Sep-19 06:59 PM Oh, yes! If there's any high speed pulsed lasers(q-switched), I'm interested. Diode pumped only though, kHz+ pulse rates, not flashlamp. 07-Sep-19 06:59 PM Ablation and micromachining would be interesting to try, but I don't do any laser stuff besides that 07-Sep-19 07:01 PM This is also perhaps a long shot, but I'd love to get a working intensified CCD camera if they have one 07-Sep-19 07:01 PM eBay has a plethora of those right now 07-Sep-19 07:01 PM or, had... 07-Sep-19 07:01 PM look for x-ray cameras, dissolve the scintillator and you're there 07-Sep-19 07:02 PM Thanks for the tip! I'm more looking for the ability to do extremely short gating time down to 5ns, perhaps even less 07-Sep-19 07:02 PM Not sure if those x-ray cameras can achieve this 07-Sep-19 07:03 PM gated cameras are quite different, not just intensified 07-Sep-19 07:03 PM they're their own class 07-Sep-19 07:03 PM however, this is exactly what you want 07-Sep-19 07:03 PM https://www.ebay.com/itm/Hadland-Imacon-792-Ultra-High-Speed-Camera-In-Case/152669308644? 07-Sep-19 07:03 PM Yeah, I should have specified it, but gating the microchannel plate intensifier is important 07-Sep-19 07:04 PM the imacon cameras are very very vintage, but they're very fast 07-Sep-19 07:04 PM streak/framing units 07-Sep-19 07:04 PM turn off the streak, turn on the gating system, and you've got what you want 07-Sep-19 07:08 PM Hmm, that Imacon camera is pretty close to where I am... If I can put together a slightly bigger budget I might be able to justify it 07-Sep-19 07:08 PM it's also a framing camera 07-Sep-19 07:09 PM And that is a very useful feature for me as well 07-Sep-19 07:09 PM Yet I am pretty poor at the moment... 07-Sep-19 07:24 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20190907_220558-2C964.jpg 07-Sep-19 07:24 PM I have this Princeton Instruments ICCD camera, but in an unfortunate series of events it suffered water damage 07-Sep-19 07:24 PM And even if I could fix it I still need to hack the proprietary software 07-Sep-19 07:24 PM So I definitely won't say no to vintage equipment at this point 07-Sep-19 07:26 PM What's special about that camera 07-Sep-19 07:27 PM It can take images with exposure times down to 2 ns, so very useful for filming very high speed phenomena, a pinching plasma in my case 07-Sep-19 07:27 PM Exposure times higher than 5 to 10 ns would pretty much blur out everything when you have shock waves travelling at well above mach 5 across a couple centimeters 07-Sep-19 07:27 PM Alternative solution here is to build a nitrogen TEA laser, trigger it at just the right time and shine it through the plasma into a filtered regular CCD camera taking an image with open shutter 07-Sep-19 07:32 PM I wonder what these are of that pile too 07-Sep-19 07:32 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-CB12A.png 07-Sep-19 07:33 PM Image quality won't be ideal though and I can only get one picture per shot 07-Sep-19 07:33 PM Is that a super big gate valve? 07-Sep-19 07:33 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-0E322.png 07-Sep-19 07:33 PM I would like to know how much they want for this tray of KF stuff 07-Sep-19 07:33 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-8388E.png 07-Sep-19 07:41 PM @Mason_Yu talk to Princeton 07-Sep-19 07:41 PM they'll probably be fine with sending you the software 07-Sep-19 07:42 PM I did, and they won't give it to me 07-Sep-19 07:42 PM oh :( 07-Sep-19 07:42 PM talk to... Mikeselectricstuff 07-Sep-19 07:42 PM I believe he did something with a camera from the same family 07-Sep-19 07:42 PM I did find the software installation file though, it's password protected 07-Sep-19 07:42 PM Through slightly questionable means I may be able to get it installed 07-Sep-19 07:42 PM But the water damage is the most critical part at this point 07-Sep-19 07:43 PM how bad is it? 07-Sep-19 07:43 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20190907_224340-53397.jpg 07-Sep-19 07:44 PM inside or outside damage? 07-Sep-19 07:44 PM these are filters afaik 07-Sep-19 07:44 PM Now I need to take that cover off and actually have a look inside the filter 07-Sep-19 07:44 PM I could help you get the installer working ;) 07-Sep-19 07:45 PM Well, It's controller suffered the worst of the water ingress, luckily those are plentiful on eBay. If I can figure out how to get the software installed in the next couple of weeks I will dedicate more time to get these things fixed 07-Sep-19 07:46 PM send me the installer and I'll take a look 07-Sep-19 09:04 PM Ah, in case they have a He-Cd laser lying around, I am interested in that too. Since I've salvaged this thing from the dumpster 07-Sep-19 09:04 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/JPEG_20190908_000250-2E3CB.jpg 07-Sep-19 09:54 PM is ok I take FIB 07-Sep-19 09:55 PM Well it not free... But for a new fib column it's pretty cheap 07-Sep-19 10:01 PM dang 07-Sep-19 10:01 PM ok how cheap? 11-Sep-19 09:33 AM I got a bit trigger-happy on an auction and bought a centrifuge that is too heavy to economically ship. If anyone lives nearby (CT, USA) you can pick it up and have it for free. https://hgpauction.hibid.com/lot/56936-177658-966937/hermle-microfuge 11-Sep-19 09:34 AM How heavy is it? 11-Sep-19 09:36 AM ~100 lbs I think 11-Sep-19 09:38 AM How much was shipping going to be? 11-Sep-19 09:39 AM No idea, but based on past experience of having auction items picked up, packed, and shipped to me, I'm guessing it'll cost ~250 bucks. 11-Sep-19 09:39 AM My winning bid was only $30, so I think I'd rather just cut my losses. 11-Sep-19 10:49 PM hmpf cti helium compressors are like 200us$ in the us 11-Sep-19 10:49 PM but 800us$ shipment 12-Sep-19 12:11 AM ok improvise 12-Sep-19 12:11 AM anyone here has a cf 10" to 6" nipple flying around and is willing to sell? 12-Sep-19 12:11 AM or a 10" cross or 10" stuff in general? 12-Sep-19 12:20 AM I have a 10" CF cold trap, which is useless to me now that I have a turbo (so I don't need my diffusion pump anymore) 12-Sep-19 12:20 AM but it's heavy so if you're far from the US west coast it will probably be expensive to ship 12-Sep-19 12:28 AM Need a full auto cnc manufacturing center 12-Sep-19 12:59 AM oh man, i hate if ebay persons don't accept paypal 12-Sep-19 10:33 AM Ok who was asking about ns lasers? 12-Sep-19 10:33 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190911_195156-66197.jpg 12-Sep-19 10:33 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190911_195201-17F62.jpg 12-Sep-19 10:33 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20190911_195204-2441A.jpg 12-Sep-19 10:38 AM How much do they want for this? 12-Sep-19 10:56 AM wow 12-Sep-19 10:56 AM i take two pls 12-Sep-19 10:59 AM 0.2mJ and 0.5ns 12-Sep-19 10:59 AM But only 800mW output 12-Sep-19 10:59 AM @AdamMcCombs that was me 12-Sep-19 10:59 AM how much do they want? 12-Sep-19 10:59 AM I can't find a datasheet for it at all 12-Sep-19 10:59 AM The company doesn't even have a website anymore, since MKS acquired them 12-Sep-19 10:59 AM Unless there's a datasheet with it as well, I can't imagine paying more than aluminium scrap value for it 12-Sep-19 11:13 AM Wavelength is a bit too long for what I need a ns pulsed laser for too 12-Sep-19 11:13 AM A diode-pumped Nd:YVO4 laser? 12-Sep-19 11:14 AM yeah, nd:yvo4 12-Sep-19 11:14 AM @Deleted User it comes with the controller, fully tested as well 12-Sep-19 11:14 AM And the price? 12-Sep-19 11:15 AM He is asking 1k... He does a lot of laser stuff and uses these... 12-Sep-19 11:15 AM Ouch 12-Sep-19 11:15 AM Yeah 12-Sep-19 11:15 AM Ouch 12-Sep-19 11:15 AM No point in paying that much for this laser unless it's specifically what you need 12-Sep-19 11:15 AM Most stuff he is making good deals on but this... He likes this 12-Sep-19 11:16 AM 800mW CW is a piddlywink at best 12-Sep-19 11:16 AM even if the peak power is a few kW 12-Sep-19 11:16 AM Also who was asking about the q switches? 12-Sep-19 11:16 AM We both asked for it I think 12-Sep-19 11:16 AM That was me, asking for q-switched lasers 12-Sep-19 11:16 AM Yeah 12-Sep-19 11:17 AM Can I get the specs you want? 12-Sep-19 11:17 AM >20W CW output, <100ns pulses @ >10kHz 12-Sep-19 11:17 AM I don't think he has q switched lasers 12-Sep-19 11:17 AM falls into the single-digit mJ output powers 12-Sep-19 11:17 AM MOPA will be fine as well, but I can't imagine a bleeding edge MOPA laser would end up in a clearout sale 13-Sep-19 01:20 AM laserresale.com has some new SPI MOPA fiber lasers for like $3.5k. I know that isn't cheap but it is a good price... 13-Sep-19 01:20 AM I think 1.3um lasers like that one are typically used in fiber optic communication... 15-Sep-19 11:53 AM $3500 for a brand-name MOPA laser is a pretty good deal 15-Sep-19 11:53 AM Just not cheap for a hobbyist 16-Sep-19 01:04 AM This seems like a really good deal for someone ready to build a TOF mass spec https://www.ebay.com/itm/Bruker-ULTRAFLEX-TOF-TOF-MS-Detector/133165161593 16-Sep-19 01:04 AM (I wish I was) 16-Sep-19 01:31 AM Well I am trying to do exactly that! 16-Sep-19 12:13 PM For vacuum people in Europe: I've found an interesting shop with more or less reasonable prices for brand new vacuum equipment 16-Sep-19 12:13 PM https://www.hositrad.com/ 16-Sep-19 12:13 PM I've placed an order for €120, will report with how everything goes. Their support has been pretty helpful so far, even if... a little... unconventional.... 16-Sep-19 12:15 PM Unconventional how? 16-Sep-19 12:15 PM ALL CAPS RESPONSES IN THE MIDDLE OF MY ORIGINAL QUOTE AND A MIX OF HOLLENGLISH AND GERMANGLISH 16-Sep-19 12:16 PM WELL IM GLAD THAT THEY WERE ABLE TO HELP YOU OUT 16-Sep-19 12:19 PM WE WILL SEE 16-Sep-19 12:20 PM WHY ARE WE YELLING AT EACH OTHER 16-Sep-19 12:20 PM no idea 16-Sep-19 12:20 PM ok good 16-Sep-19 12:20 PM but I felt a little intimidated by their helpfulness 16-Sep-19 12:22 PM Understandable 16-Sep-19 12:39 PM all caps justmakes them sound old school 16-Sep-19 12:39 PM like "teletype baudot had no lower case, so why change perfection?" 16-Sep-19 12:41 PM they also store passwords in plaintext 16-Sep-19 12:41 PM so beware 18-Sep-19 07:44 AM <__ice9#6039> I finally succeeded in getting someone to sell cheap yttria-stabilized zirconia tubing for high-temperature high-thermal-stress applications. https://www.ebay.com/itm/New-6pcs-16mm-ODx11-5mm-IDx300mm-length-Zirconia-hollow-ceramic-rod/233344762381 18-Sep-19 07:44 AM <__ice9#6039> These are only $20 for 6 of them. Past eBay sellers who had offered had wanted as much as $200 per tube. They have not been available on Amazon or AliExpress at any point that I have checked. Alibaba has listings for them, but I have never been successful at attempting to order small volumes of this item there. 18-Sep-19 07:44 AM <__ice9#6039> I originally only planned to buy 6 of them, to use in experimental oxyfuel powered muffled heating elements, but when pricing came in this low I tripled my order opportunistically. 18-Sep-19 07:44 AM <__ice9#6039> As for the heating elements-- I am trying to figure out the best way to drive a muffle furnace past 1900C 18-Sep-19 10:02 AM @__ice9 perhaps an alloy stable at those temperatures + induction heater? 18-Sep-19 10:02 AM as an IR furnace 22-Sep-19 02:16 PM <__ice9#6039> No alloy is stable at that temperature in air or any reasonably oxidizing atmosphere 22-Sep-19 02:16 PM <__ice9#6039> I did consider trying to use a ceramic-shielded graphite susceptor, but that still requires the induction coils to end up inside the furnace. Not viable. 23-Sep-19 09:43 AM https://www.ebay.com/itm/Hitachi-S-450-scanning-electron-microscope-SEM/133158341717?hash=item1f00db0c55:g:6S0AAOSwVgJdbHh3 23-Sep-19 09:43 AM Could be interesting for someone near philly 23-Sep-19 11:48 AM https://www.ebay.com/itm/272831345371 so cute! 23-Sep-19 11:19 PM for a diffusion pump driven espresso machine 23-Sep-19 11:23 PM I see that and I raise to you 23-Sep-19 11:23 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/5600367403-D5076.png 23-Sep-19 11:23 PM The teeniest diffpump I've seen 23-Sep-19 11:23 PM from a russian classifieds site 23-Sep-19 11:23 PM 250ml/s 23-Sep-19 11:44 PM wuut 23-Sep-19 11:57 PM it's adorable isn't it 23-Sep-19 11:57 PM he's got quite a few of them, $80 each 24-Sep-19 12:56 AM nice 24-Sep-19 12:56 AM for i dunno your camping micro xray source 24-Sep-19 12:56 AM non-sealed so you can change stuff in field 24-Sep-19 12:56 AM or camping sem 24-Sep-19 12:56 AM i mean someone could build a lightweight sem 24-Sep-19 12:56 AM not like 100kg light weight more like 5kg 24-Sep-19 12:56 AM is that already a thing? 24-Sep-19 07:12 AM You joke about camping SEM. But if I gutted the bus I have partially I could totally cram at-least two SEMs inside and still have a small kitchen area for snacks :P 24-Sep-19 08:06 AM would be awesome 24-Sep-19 08:06 AM but i mean for backpacking 24-Sep-19 08:06 AM but a SEM bus would be also a nice thing for some camps 24-Sep-19 08:22 AM http://voxa.co/products-2/mochii 24-Sep-19 08:22 AM I don't remember how close it is to 5kg but I've walked around carying 3 of them 24-Sep-19 08:24 AM how about the one @piGuy has? 24-Sep-19 08:24 AM that was pretty tiny 24-Sep-19 08:25 AM Lol that thing is like 200 lbs and still has an external vacuum pump 24-Sep-19 08:25 AM It may be table top but it's not portable 24-Sep-19 08:27 AM oh, ok 24-Sep-19 08:28 AM That mochii sem also has x ray spectroscopy built in 24-Sep-19 09:08 AM woah 24-Sep-19 09:08 AM thats awesome 24-Sep-19 09:09 AM Yeah 24-Sep-19 09:09 AM how much? 24-Sep-19 09:09 AM Getting it that small is hard 24-Sep-19 09:09 AM first read about now 24-Sep-19 09:09 AM With eds it's 60k 24-Sep-19 09:09 AM hmm not sooo bas 24-Sep-19 09:09 AM No Eds about 45 24-Sep-19 09:09 AM bad 24-Sep-19 09:09 AM fair i guess 24-Sep-19 09:09 AM and the resolution? 24-Sep-19 09:10 AM Yeah... But the cheapest eds system you can buy is 50k 24-Sep-19 09:10 AM And it has a better sensor than them 24-Sep-19 09:10 AM If memory serves 500 ish nm 24-Sep-19 09:10 AM ah ok 24-Sep-19 09:10 AM thats max spec? 24-Sep-19 09:11 AM Yeah 24-Sep-19 09:11 AM hm ok 24-Sep-19 09:11 AM It's optimized for eds 24-Sep-19 09:11 AM ah ok 24-Sep-19 09:11 AM metallurgy and geology and stuff? 24-Sep-19 09:13 AM The idea is a sem you can bring with you to the sample 24-Sep-19 09:13 AM yep 24-Sep-19 09:13 AM i would totally buy it 24-Sep-19 09:13 AM it/ 24-Sep-19 09:13 AM meh 24-Sep-19 09:13 AM if i had 50k for such tools 24-Sep-19 09:13 AM simply the option to bring a SEM to a party i mean jeez 24-Sep-19 09:13 AM with enough time i could make my little isi mobile 24-Sep-19 09:13 AM the column itself only has the weight of a kegg 24-Sep-19 09:13 AM but on the other side all the electronics ... not that easy for a gag 24-Sep-19 09:19 AM Yeah 24-Sep-19 09:19 AM The lens current requirements alone limit size 24-Sep-19 09:20 AM superconductors to the rescue 24-Sep-19 09:20 AM mechanical actuated permanent magnets!!1 24-Sep-19 09:20 AM or permanent magnetic biased - that's what is done in larger optics, right? 24-Sep-19 10:38 AM I want a mochii! 24-Sep-19 03:14 PM I have a collection of items: 1 - A used, slightly dead(see above) Atomtex AT-1123 compensated, pulse-capable scintillation meter 2 - A brand new(not in box, but never powered up!) CEI OX-70/g4 X-ray tube(75kV, 100W/500W pulse, 400um focus) 3 - A used soviet BS6 tube - 100kV 2W, electrostatically+magnetically focused, down to 20um, 100um with electrostatic only). I have the datasheet and focus specifications for it, as well as its passport and characteristics. 4 - Two soviet BS10 tubes with a focusing magnet - almost identical to the BS6, but I don't have any info for these. They're smaller, so lower voltage, but the filament and focus voltages are compatible. I've powered it up, and it does produce an image similar to the BS6, but a bit blurrier. Might be tweakable with focusing. The focus magnet from the BS10 tubes is the same as the magnet for BS6 tubes, swappable. I'm open to selling any of these, or trading a few of these with extra payment from me for a working microfocus x-ray head. 25-Sep-19 01:15 AM https://seattle.craigslist.org/skc/for/d/pacific-hitachi-2400-sem-scanning/6972877523.html 25-Sep-19 12:47 PM Someone better buy it so I can't. 25-Sep-19 12:47 PM Lol 25-Sep-19 12:47 PM Had cables cut 25-Sep-19 12:47 PM And no docs 25-Sep-19 12:47 PM Bad signs 25-Sep-19 12:50 PM Yeah u can't Test, but is fixable for sure 25-Sep-19 12:50 PM I was thinking to create an open source controller board for sem 25-Sep-19 12:51 PM What if it was free? Would it be worth it? 25-Sep-19 12:51 PM yes 25-Sep-19 12:51 PM free stuff is always worth it! 25-Sep-19 12:52 PM Well 25-Sep-19 12:53 PM that attitude leads to excitingly cluttered homes 25-Sep-19 12:53 PM Maybe 25-Sep-19 12:53 PM I think I have docs for it 25-Sep-19 12:54 PM I suppose I don't need it. I already have an SEM. 25-Sep-19 12:54 PM Yeah 25-Sep-19 12:54 PM It's a bit better than yours 25-Sep-19 12:54 PM But if you're going upgraded to that size i'd get something better 25-Sep-19 12:55 PM Adam digitalize the docs you have 25-Sep-19 01:30 PM @AdamMcCombs Have you ever had to partially disassemble a SEM for transport/fitting through tight spaces? 25-Sep-19 01:32 PM @AdamMcCombs could make a teardown and measure the parts for us so we could replicate the beast with a lathe 25-Sep-19 01:56 PM If it wasn't more broken looking and 8x more expensive than my existing SEM I'd be compelled to buy it 25-Sep-19 01:56 PM But gotta get my existing one fixed I suppose, otherwise my wife will definitely not be happy with such a purchase 25-Sep-19 02:10 PM https://www.ebay.de/itm/172663309663 25-Sep-19 02:12 PM 10 mbar is not a very useful gauge 25-Sep-19 02:12 PM the seller has cheaper 100 mbar gauges! 25-Sep-19 02:12 PM I was never sure, is the number its upper or lower limit? 25-Sep-19 02:12 PM I'm going to guess upper 25-Sep-19 02:13 PM ah, ok 25-Sep-19 02:13 PM baratrons are used for absolute gas fill or flow 25-Sep-19 02:13 PM oh and also https://www.ebay.de/itm/173980466151 25-Sep-19 02:13 PM yours for only 60k eur 25-Sep-19 02:13 PM I'll drop by to pick it up this weekend 25-Sep-19 02:13 PM the size of that turbo 25-Sep-19 02:13 PM hnnng 25-Sep-19 02:13 PM wait that's not a turbo! 25-Sep-19 02:13 PM that's a GIGANTIC cryopump! 25-Sep-19 02:15 PM yep <3 25-Sep-19 02:15 PM oh splendid, they have two of 'em 25-Sep-19 02:15 PM let's go halfsies 25-Sep-19 02:15 PM books plane tickets 26-Sep-19 02:49 AM oh jeez 26-Sep-19 02:49 AM so we are finally having that meetup here in germany 26-Sep-19 03:03 AM would by awesome 26-Sep-19 03:03 AM for 6k i would buy 26-Sep-19 03:03 AM at least i could live in it 28-Sep-19 05:19 PM https://www.ebay.com/itm/193127747654?ul_noapp=true 28-Sep-19 05:22 PM good thing my lathe can fit none of those! 03-Oct-19 11:54 AM https://www.ebay.com/itm/Tektronix-571-Curve-Tracer/283628578710 03-Oct-19 11:54 AM For those in Europe... Will ship to the US too but yea 03-Oct-19 11:54 AM For those looking for a decent curve tracer. 03-Oct-19 11:59 AM @Nixie maybe? 03-Oct-19 12:00 PM I wish, but literally ZERO money. 03-Oct-19 12:00 PM I wonder how high it goes 03-Oct-19 12:00 PM and 18eur is suspiciously little. 03-Oct-19 12:00 PM Speaking of curve tracers, anyone have experience with these https://www.ebay.com/itm/Transistor-Curve-Tracer-adapter-XY-Oscilloscopes-2-ranges-Bias-Unassembled-kit/141138017533 03-Oct-19 12:00 PM or know what kit or product it is a clone of 03-Oct-19 12:01 PM I got the kit, and made a nice box with a dual power supply and such, haven't tested it yet 03-Oct-19 12:02 PM Tbh if I ware to bid on that and win it. I'm certain I'd come across a pile of curve tracers on a hamfest for 5-20eur each. 03-Oct-19 12:02 PM "nobody wants them" 03-Oct-19 12:02 PM no missing parts, comprehensible schematic and assembly guide. 03-Oct-19 12:02 PM If you find curve tracers for that price, think of me, please. 03-Oct-19 12:02 PM XDDD 03-Oct-19 12:03 PM I have gotten weird test gear for free at the end of a hamfest 03-Oct-19 12:03 PM like 1-3 ikea bags of random old things 03-Oct-19 12:03 PM mostly old data link testers, ISDN crap and mains testers (that's how I got my Megger), insulation and ground resistance testers and so on. 03-Oct-19 12:03 PM Also got a neat phone circuit level tester. Basically a 600ohm balanced signal generator and a logamp in the same box with a nice big analog dial. :) 03-Oct-19 12:03 PM I usually just give them away to friends or part them out. 03-Oct-19 12:03 PM I got some old datalink testers waiting parting out. 03-Oct-19 12:19 PM Hamfests are good for stuff like that 03-Oct-19 12:23 PM Yep 04-Oct-19 12:23 PM https://www.govdeals.com/index.cfm?fa=Main.Item&itemid=1226&acctid=1092 04-Oct-19 12:23 PM $100 04-Oct-19 12:23 PM opening bid, with that first bid made 04-Oct-19 12:24 PM of course it's in the US :( 04-Oct-19 12:24 PM yeeaahhh 04-Oct-19 12:24 PM :/ 04-Oct-19 12:26 PM the second pic 04-Oct-19 12:26 PM resolution 155 eV @ 5.9 ev 04-Oct-19 12:26 PM looks like someone forgot a "k" 04-Oct-19 12:26 PM ahh 04-Oct-19 12:28 PM @GigaSquirrel no it's just a spectrophotometer with a disgusting SNR 04-Oct-19 12:28 PM :D 04-Oct-19 12:28 PM xD 04-Oct-19 04:14 PM Hey so if you really want that tem talk to me but I'm kinda calling dibs... 04-Oct-19 04:14 PM Me and a friend have been eyeing it for a while 04-Oct-19 04:34 PM Good luck with it Adam. 04-Oct-19 05:34 PM hah, I was going through govdeals for other stuff and came across it, so was simply posting it.. but if you are claiming it - go for it 04-Oct-19 05:46 PM It's fully analytical so it makes it useful for some stuff 04-Oct-19 09:15 PM I hope you get it so I can come over and play with it. 04-Oct-19 09:22 PM @piGuy do you ever come across SEMs like yours for parts/repair? I'm interested in trying to fit a SEM column to my existing vacuum chamber. 04-Oct-19 09:52 PM @nmz787 , not sure if I've ever seen any in disrepair. The little desktop SEMs hit the market around 2005 I think, so they probably aren't old enough. It's not like a big broken SEM from the 80s that people practically give away for free. 04-Oct-19 10:08 PM Hehe, well, I've had some luck with 2005 era instruments :p 04-Oct-19 10:08 PM I don't expect to pay cheap, just interested in not paying for the stage and chamber if possible 04-Oct-19 10:08 PM The column being small is what attracts me, since my existing FIB chamber add-on ports aren't as large as most SEM columns 05-Oct-19 11:36 AM https://www.ebay.de/itm/173947263568 05-Oct-19 11:47 AM A light guide? 05-Oct-19 12:05 PM not sure, some light barrier thingy 05-Oct-19 12:05 PM but it has a window 05-Oct-19 11:16 PM https://www.ebay.com/itm/Glassman-High-Voltage-Power-Supply-NEC597-16WG70N-70kV-1mA/143402555995 05-Oct-19 11:16 PM Dang 06-Oct-19 01:48 PM https://www.ebay.com/itm/273873840534 06-Oct-19 01:48 PM RF sputtering with cryopump and what not 06-Oct-19 01:49 PM Ohhhh thats nice 06-Oct-19 01:49 PM Too bad its wayyy too expensive. But is cryo good for sputtering? I didn't think they needed that high of a vacuum generally? 06-Oct-19 01:50 PM I'm not sure about that either, you're gonna need some gas for that 06-Oct-19 01:50 PM Oh that's not sputter... 06-Oct-19 01:50 PM There is an RF source, I bet its a plasma etch process? 06-Oct-19 01:50 PM I just assumed it was, due to the layout and RF source 06-Oct-19 01:50 PM dunno ^^ 06-Oct-19 01:52 PM reminds me more of reactive ion etch 06-Oct-19 01:52 PM https://www.ebay.com/itm/Technics-Micro-RIE-800C-II-RIE-Etching-System-With-RF-power-generator/322557661982 06-Oct-19 01:52 PM which even that shouldn't need that high of vacuum 06-Oct-19 01:52 PM interesting thing non-theless 06-Oct-19 01:53 PM hmm 06-Oct-19 01:53 PM that's weird 06-Oct-19 01:53 PM plus I don't see a turbo 06-Oct-19 01:55 PM Yea that micro-rie doesn't have anything other than a roughing line 06-Oct-19 01:55 PM most of these processes just back-fill with gas, and while yes run at a low pressure, not THAT low, you generally need the gas there... 06-Oct-19 01:55 PM With cryo you'd have very little gas... 06-Oct-19 01:56 PM or a very swamped cryo 06-Oct-19 01:57 PM yea.. 06-Oct-19 01:57 PM Wish this wasn't on the other side of the country... 06-Oct-19 01:57 PM https://www.ebay.com/itm/HIGH-VACUUM-CHAMBER-GLASS-BELL-JAR-SYSTEM-WITH-18-OD-X-18-H-BELL-WELCH-PUMP/333318288508 06-Oct-19 01:57 PM Would make a great starting platform for an evaporative deposition system 06-Oct-19 03:02 PM Yo dawg, heard you like vacuum chambers... So I made a vacuum feedthrough for your vacuum chamber so you can have a vacuum in your vacuum. 06-Oct-19 03:02 PM https://www.ebay.com/itm/2-75-CF-conflat-to-1-33-CF-adapter-high-vacuum-UHV/254152625693 06-Oct-19 03:02 PM Its just so cute but I'd have NO idea what I personally could use it for lol 06-Oct-19 05:21 PM So you can feed gas into some 1.33" CF device in your vacuum chamber? Say a small ion source? 08-Oct-19 03:19 AM oh man, this looks like the sort of thing you need a PhD just to understand the controls for... https://www.ebay.com/itm/PlasmaTherm-PK-2460-PE-RIE-Reactive-Ion-Etcher-System/332350284795?_trkparms=aid%3D1110001%26algo%3DSPLICE.SIM%26ao%3D1%26asc%3D40718%26meid%3D1e61da8b75b6427d829fb044e2f80d0d%26pid%3D100005%26rk%3D1%26rkt%3D12%26mehot%3Dco%26sd%3D163768320983%26itm%3D332350284795%26pmt%3D0%26noa%3D1%26pg%3D2047675&_trksid=p2047675.c100005.m1851 08-Oct-19 03:19 AM price is right though 08-Oct-19 04:01 AM <__ice9#6039> https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F193133406318 Fast way to x-ray imaging at relatively low power levels (65kV, 7mA) 08-Oct-19 11:03 AM @__ice9 7mA is huge power levels for anything lab-related 08-Oct-19 11:03 AM and dental heads make rather meh images due to the large focal spot 08-Oct-19 11:03 AM 65kV might not be enough, especially if it's fixed 08-Oct-19 11:03 AM but 7mA @ 65kV is like several thousand sieverts per hour at the anode 08-Oct-19 11:03 AM https://www.ebay.com/itm/SOURCE-RAY-SOURCEBLOCK-SB-80-250-X-RAY-SOURCE-GENERATOR-WITH-POWER-SUPPLY/303295144018? 08-Oct-19 11:03 AM now this is a great x-ray head 08-Oct-19 11:03 AM it's a little on the expensive side, but it's the best option on eBay at the moment 08-Oct-19 11:03 AM 33 micron focal spot, 35-80kV, 20-250uA, and it comes with the documentation/software to run it 08-Oct-19 11:03 AM (I've talked to the seller) 08-Oct-19 03:14 PM I could drive to get that RIE and I have seen that before but its probably way overkill for what I need so I'd rather not take the space up with it. 08-Oct-19 03:14 PM And that's to say if I decide to do RIE, I do want to try and do a silicon process with only etching with KOH just as an attempt. You'd be limited by crystal orientation and direction of etch and depth of etch but I think you could make a simple process work and it would be safer than handling HF. 08-Oct-19 05:58 PM Seems useful for general plasma stuff tho, deposition or etching 08-Oct-19 06:01 PM That may be universal enough. I mean plasma work is fairly simple just changing of variables like gas flow/percentages/voltage/etc 08-Oct-19 07:27 PM DC vs RF too 08-Oct-19 08:31 PM True. I suppose I would consider that DC sputtering then not Ion Etch/etc. But I suppose if we are just talking plasma sources then yes. 09-Oct-19 11:12 AM Well i think deposition vs etch in DC sputtering mostly depends on what end of the electric field your sample is on, though maybe you need some ion extraction fields too... Hmm 10-Oct-19 01:33 PM https://www.ebay.com/itm/143406300825 10-Oct-19 01:52 PM That seems like a somewhat fair deal. I could swear I have seen similar models sell for half of that in random condition.... I expect a probe for that much over here? 10-Oct-19 01:52 PM That is AS-IS anyway... tested a little bit more I guess 10-Oct-19 01:52 PM yeah it's a great deal 10-Oct-19 02:26 PM I was saying seems fair I don't think its great though personally. 10-Oct-19 02:26 PM I guess it says good working condition... But no sign of if the batteries leaked at all in its history and what damage there is. 10-Oct-19 02:28 PM I'm telling myself that's a great deal 'cause that's what I paid for my model 12 10-Oct-19 04:29 PM I mean its a perfectly fair price. I just know I have seen better deals, mostly mentioning for those who are strapped for cash but are looking. 11-Oct-19 08:23 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-4EBCD.png 11-Oct-19 08:23 AM is anyone here interested in this RF source from a sputter / plasma etching device? 11-Oct-19 08:25 AM Uhm yes?? 11-Oct-19 08:25 AM Wow that is a nice unit. 11-Oct-19 08:26 AM a friend of mine is selling some, asking for 200 bucks a pop 11-Oct-19 08:27 AM That is super reasonable. 11-Oct-19 08:27 AM I've been having a hard time finding a good price on anything smaller/singlephase 11-Oct-19 08:27 AM there are tons and tons of 3 phase units over here in the states. 11-Oct-19 08:27 AM All of the little single phase units are like... 200 bucks for something that looks like its been dropped off a 5 story building into a dumpster 11-Oct-19 08:28 AM I've been told they're all working 11-Oct-19 08:28 AM should I tell them you want one? 11-Oct-19 08:29 AM That's fantastic. I don't know what shipping would be like to me... But if we can estimate that I would be interested in a few days here when I have my paycheck in. 11-Oct-19 08:29 AM Yes, thank you. 11-Oct-19 08:29 AM Glad to hear there are a few too. Since I would hate to nab the only one if someone else here is really yerning for one too. 11-Oct-19 08:30 AM looks like 75 bucks for shipping 11-Oct-19 08:37 AM Really? That would be perfectly fair then. Sign me up :) 11-Oct-19 08:39 AM Already done ^^ 11-Oct-19 08:39 AM just waiting for an answer 11-Oct-19 08:39 AM I'll gladly swap for a He compressor 11-Oct-19 08:39 AM heads up, I just learned it might just be the amplifier, not including the frequency generator 11-Oct-19 08:39 AM it's a bit confusing 11-Oct-19 08:50 AM Hrm... That would be a bit odd. They appear to be one unit from the photos I saw? I thought? 11-Oct-19 08:50 AM If he could get photos of what he has I'll find docs and read through them. 11-Oct-19 08:51 AM I already asked for photos 11-Oct-19 08:51 AM Sweet thank you. 11-Oct-19 08:51 AM Ohh I see there are some models with no front panel at all 11-Oct-19 08:51 AM https://i.ebayimg.com/images/g/TfcAAOSw~HBZ960w/s-l1600.jpg https://i.ebayimg.com/images/g/3gQAAOSwjyhZ9600/s-l1600.jpg 11-Oct-19 08:51 AM http://imageserv11.team-logic.com/store-logic/products/2033/2/4/3/1/6/2/pdx1250_1.jpg https://imageserv11.team-logic.com/mediaLibrary/2033/pdx1250-back.jpg 11-Oct-19 08:51 AM This is what I most commonly see though... 11-Oct-19 08:55 AM wth, those output connectors 11-Oct-19 08:55 AM The "generator user" port looks the same... I wonder if its built in just no user panel on it. 11-Oct-19 08:55 AM C, N and PL?! 11-Oct-19 08:55 AM Just a remote control. 11-Oct-19 08:55 AM Also yea I found that interesting myself lol 11-Oct-19 08:55 AM But still all obtainable connectors 11-Oct-19 08:55 AM unlike some HV stuff where its just like, oh here is this custom thing we made JUST for this! 11-Oct-19 08:55 AM obtainable or replacable in the case of C 11-Oct-19 08:55 AM lol yeah 11-Oct-19 08:56 AM heh yea 11-Oct-19 08:56 AM Yea it appears if it doesn't have the front panel it's probably just a remote only unit or something like that... 11-Oct-19 08:56 AM It physically should still have the gen in there. Just have to control it over the user port 11-Oct-19 08:56 AM I think anyway from what I can infer from a similar model's manual. 11-Oct-19 08:58 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-64A6C.png 11-Oct-19 08:58 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-32E84.png 11-Oct-19 08:59 AM is saw them in a set up once you can have a master and then slave units 11-Oct-19 08:59 AM Which on later units they appear to use a DB9 there? So I have a feeling it may just be RS232 11-Oct-19 08:59 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-15CCE.png 11-Oct-19 08:59 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-5410B.png 11-Oct-19 08:59 AM but he said he has the pinout, still waiting on that 11-Oct-19 09:00 AM Customer interface User port and/or active front-panel controls User port connector 25-pin, sub-miniature D, male Serial port connector None 11-Oct-19 09:00 AM That's good because this site implys its not serial 11-Oct-19 09:00 AM http://www.ptbsales.com/advanced-energy-pdx-1250-power-supply/ 11-Oct-19 09:01 AM yep 11-Oct-19 09:02 AM Also I assume that spec is 325 hz to 450 khz? or is it 325 khz to 450 khz? 11-Oct-19 09:02 AM It just says 325 to 450 khz and that to me could imply either? 11-Oct-19 09:02 AM I'm pretty sure that's kHz for both 11-Oct-19 09:02 AM Hrm interesting. ok! 11-Oct-19 09:02 AM I suppose I haven't really looked into frequency importance much, I don't think it actually matters all too much, most setups here are just 13.56Mhz since the FCC says that can be used for industrial stuff. 11-Oct-19 09:04 AM yep, I was surprised by the low frequency 11-Oct-19 09:09 AM I dunno, I suppose so long as I have all my stuff matched properly and shielded properly and I don't end up making the local hams or the FCC mad I don't care. 11-Oct-19 09:09 AM I just figured if I started with something with a frequency that no-one cared about, 13.56Mhz, then worst case I still shouldn't upset too many people. 11-Oct-19 09:10 AM apparently he just asked AE for the pinout and got it ¯\_(ツ)_/¯ 11-Oct-19 09:21 AM Oh thats nice haha 11-Oct-19 01:46 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/PDX_1250-3BE7F.pdf 11-Oct-19 01:46 PM here's the pinout and stuff 11-Oct-19 04:35 PM Looks pretty simple to interface with! Hrm. Probably spin up a custom little board just to control it and give it a front panel. 12-Oct-19 01:09 PM If it had the signal generator built in I'd be interested 12-Oct-19 01:09 PM Being a slave unit seems like it could still require an rf input 12-Oct-19 01:09 PM (haven't read the PDF posted) 12-Oct-19 01:10 PM nope, I'm pretty sure it has the RF gen in there 12-Oct-19 01:10 PM I'll get one or two of those units some time this week, can / will test then 12-Oct-19 01:10 PM I don't have PayPal... So not sure how I'd pay 12-Oct-19 03:32 PM I personally hate PayPal but there are few other options. I'd just sign up and link a bank account or credit card then you can send money as if your paying with your credit card. 12-Oct-19 03:32 PM Also yea from the docs it has the Gen and everything. Just no front panel. It's less of a slave unit and more of a this is going to be hidden away or remote so we really don't need the front panel unit. 12-Oct-19 04:23 PM Link bank accounts? 12-Oct-19 04:23 PM I literally can't use PayPal, they've blacklisted me. 12-Oct-19 04:28 PM Oh... I didn't know that, I thought you just didn't have one... Uhm... That's an interesting problem. 12-Oct-19 04:43 PM Yeah, them and eBay really like to play weird games... I had an ebay gift card that I used most of about 6 or 9 months ago, have $5 remaining to use, and apparently they must have changed their terms and conditions such that you cant use giftcards without a PayPal account, so my $5 is lost 12-Oct-19 04:43 PM Paying with a credit card works for me on ebay, as long as I don't sign into PayPal 12-Oct-19 04:59 PM In europe I'd just suggest IBAN/Swift wire transfer if both parties trust each other. 12-Oct-19 04:59 PM If Paypal is not an option 13-Oct-19 01:44 AM atm he still has two units to be sold 13-Oct-19 01:49 AM If you can figure out a way for me to pay... I would buy one 13-Oct-19 01:49 AM I'm discussing that with him atm 13-Oct-19 01:49 AM Though i did just find this on 60Hz plasma 13-Oct-19 01:49 AM https://link.springer.com/article/10.1007/s11814-014-0145-9 13-Oct-19 01:49 AM Which means I can try some stuff using the MOT sputter setup, but just without the diodes, I guess 13-Oct-19 01:49 AM @GigaSquirrel cool! 13-Oct-19 01:49 AM /me sleeps 13-Oct-19 01:50 AM good night! 13-Oct-19 02:43 AM Will it work with 50hz in europe? 13-Oct-19 02:44 AM I don't see why not 13-Oct-19 02:44 AM but this isn't inductively coupled 13-Oct-19 02:44 AM it's basically your sputter chamber without the rectification 13-Oct-19 03:47 AM That's cool. I would figure the frequency shouldn't matter since I've seen a VERY wide range of frequencies for plamsa generations, but that's generally hundreds of khz to mhz but never thought about it that low... Figured it would be easier to generate and there was some kind of reason they wouldn't use it for industry. May be as simple as noise... Or limitations not obvious. Hrm. Would be interesting to experiment with. 13-Oct-19 03:47 AM Also I'll be-able to paypal your friend at some point here this coming week. Do you have a way I can send him my address so he knows how much exactly shipping will be or can I just pay him 200 for it then once he ships it I can send him the rest? 13-Oct-19 03:47 AM Or I can send him like 300 and he can refund me the left over 13-Oct-19 03:47 AM I don't mind either way. 13-Oct-19 03:51 AM since he doesn't have discord we arranged that he'll bring the thingies to me and I do the rest ^^ 13-Oct-19 03:51 AM I'll get them some time this week 13-Oct-19 03:51 AM Oh ok! 13-Oct-19 03:51 AM Cool. No rush for me. 13-Oct-19 03:52 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-23D9C.png 13-Oct-19 03:52 AM since they weigh 14 kg the 20 kg parcel should be good 13-Oct-19 03:52 AM oh they are flat rates?? 13-Oct-19 03:52 AM thats cool 13-Oct-19 03:52 AM aye 13-Oct-19 03:53 AM Ok so leme double check here. This is 200 euro to him for the unit and 75.99 euro to you for shipping or? 13-Oct-19 03:53 AM aye 13-Oct-19 03:53 AM 275.99€ in total 13-Oct-19 03:55 AM Cool. Just dm me the paypals when everything is ready. Worst case end of this week for me to be ready for the money. So again no rush. 13-Oct-19 07:34 AM https://twitter.com/GigaBecquerel/status/1183390280730497031?s=19 13-Oct-19 10:02 AM @Conmega main thing I can think of re 60Hz vs 13.56MHz is that you're going to get almost a million times faster switching speed on the direction ions will be pulled in, so less time for inertia to build up, so less time for ballistic sputtering to happen.... I.e. more plasma chemistry vs inertial chunks blowing off the material 13-Oct-19 07:23 PM @GigaSquirrel how about Google Pay? 13-Oct-19 10:53 PM I've never used that... 13-Oct-19 10:53 PM don't you know anyone with paypal you can wire transfer some money? 13-Oct-19 11:49 PM @GigaSquirrel put up an ebay listing with a "best offer" 13-Oct-19 11:49 PM if you click "pay now" but don't log into paypal, it lets you choose "pay with credit card" 13-Oct-19 11:49 PM under the login button 14-Oct-19 12:37 AM good idea 14-Oct-19 12:37 AM but ebay will charge a good amount of money for that 14-Oct-19 12:51 AM yup 14-Oct-19 10:07 AM @GigaSquirrel no I don't really have many friends locally that I could get things shipped to 14-Oct-19 10:07 AM @GigaSquirrel also they shipped it to me, but using their PayPal, they could get sucked into the blacklist that I've got on somehow 14-Oct-19 10:10 AM You've never been able to contact them about that? 14-Oct-19 10:10 AM Like if they blacklisted you based on address if its a rental or something like... 14-Oct-19 10:10 AM They should be-able to sort that out 14-Oct-19 10:18 AM Dunno, paypal, like other modern companies has trash to non-existent customer service. 14-Oct-19 10:29 AM Been blacklisted for around a decade, they don't respond with reasoning 14-Oct-19 10:29 AM My wife even got blacklisted after being found to associate with me :/ 14-Oct-19 10:43 AM Thats nuts. 14-Oct-19 03:04 PM This seems like an insanely dirty foreline connection on this turbo... 14-Oct-19 03:04 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/15710906242935170372575372049268-84520.jpg 14-Oct-19 03:05 PM ...was that thing used as clothes dryer? 14-Oct-19 03:07 PM That could be old dux seal somebody had packed in there thinking there was a leak 16-Oct-19 06:23 AM https://www.go-dove.com/events/278 16-Oct-19 06:23 AM I know there are quite a few people in California, some things in this auction could be interesting if it's close 16-Oct-19 06:23 AM I wonder how much they want for one cryopump with the cold head 16-Oct-19 02:09 PM @AdamMcCombs should see if this is near his client out that way, she might be-able to use some of these parts, and I've shipped stuff out to her before so maybe Adam can help with stuff going back the other way. 16-Oct-19 02:09 PM Also Adam your roughing pump will be shipped to you next week, its packaged just a friend is going to be in town who has a UPS account... discounts :) 16-Oct-19 02:09 PM Oh cool they have some RF plasma gens in that auction starting cheap too 16-Oct-19 02:09 PM and a cute plasma etcher, which started at a fair price 16-Oct-19 02:16 PM don't you dare looking at other plasma gens :P 16-Oct-19 02:16 PM heh... I mean in the end what those go for and what your friend's cost and shipping wise probably come out to be the same 16-Oct-19 02:16 PM though I do wonder the differences... Looks like some of those are 120V instead of 240V... 16-Oct-19 02:16 PM which could be nice since I only have one 240V outlet in the basement atm... 16-Oct-19 02:18 PM Well be aware of the shipping costs since buyer is responsible for removal, so it's likely going to cost you. Also 18% premium + tax 16-Oct-19 02:18 PM oh for sure, I was more-so pointing them out for others possibly I suppose. And also maybe taking model numbers down for ePay searchs 16-Oct-19 02:18 PM https://www.ebay.com/itm/AE-Sparc-leV-Pulsing-Power-Supply-3152330-009-A-AS-IS/171444026482 16-Oct-19 02:18 PM Ah yea this is the only listing I have found on ePay so far... lol 16-Oct-19 02:18 PM Apparently a pulsing supply anyway 16-Oct-19 02:18 PM ah just needed a space between the le V 16-Oct-19 02:18 PM yea these are pulsed arc DC supplies it seems like? 16-Oct-19 02:27 PM Some of those supplies are 3 phase, too... Which complicates matters a lot if you aren't in an industrial park or something 16-Oct-19 02:41 PM yea 16-Oct-19 02:41 PM I have a friend down in VA getting a building with all the 3 Phase in the world soon though :) 16-Oct-19 02:41 PM I'm going to be trading him my 3 phase cryo pumps for an old computery thing actually 16-Oct-19 05:58 PM https://www.ebay.com/itm/MDC-Double-Power-Feedthrough-7-25-Long-DN40CF-Flange/382972943796 16-Oct-19 05:58 PM Pretty decent price for a brand new dual power feedthrough, watercooled though so you'll have to cap them or use it. 17-Oct-19 02:02 AM If @Conmega finds a nearer alternative to the rf gen, can I be next? 17-Oct-19 03:04 AM sure ^^ 17-Oct-19 03:49 AM Yay! 17-Oct-19 02:09 PM https://www.ebay.com/sch/m.html?_ssn=ivrsholdings&_armrs=1&_from=R40&_sacat=0&_nkw=residual+gas+analyzer&_blrs=spell_check 17-Oct-19 07:18 PM https://www.ebay.com/itm/Pfeiffer-Turbo-Pump-HiPace-80-PM-P03-940-A-TC-110-Used/233372121729 17-Oct-19 07:18 PM maybe worth the money and gamble 17-Oct-19 07:18 PM with a lower offer 17-Oct-19 07:30 PM controller's been ripped off 17-Oct-19 07:31 PM yea but there was a listing for them for 200 OBO 17-Oct-19 07:31 PM could get that cheaper 17-Oct-19 07:31 PM he doesn't ship here :( 17-Oct-19 07:31 PM and it's not much faster than my TPH-060 17-Oct-19 07:31 PM flange looks shot 17-Oct-19 07:31 PM wonder why it's in such poor condition 18-Oct-19 03:29 AM dropped in the scrap container? 18-Oct-19 04:38 AM yea it could have shot bearings too 18-Oct-19 04:38 AM I just posted it here for others, I have a <500 dollar watch on hipace turbos 19-Oct-19 09:41 AM I have a couple turbos to spare, these comes from a clean helium/hydrogen process : http://rover.ebay.com/rover/1/709-53476-19255-0/1?icep_ff3=2&pub=5575378759&campid=5338273189&customid=&icep_item=193166196079&ipn=psmain&icep_vectorid=229480&kwid=902099&mtid=824&kw=lg&toolid=11111 19-Oct-19 09:41 AM http://rover.ebay.com/rover/1/709-53476-19255-0/1?icep_ff3=2&pub=5575378759&campid=5338273189&customid=&icep_item=193166201242&ipn=psmain&icep_vectorid=229480&kwid=902099&mtid=824&kw=lg&toolid=11111 19-Oct-19 09:45 AM the second one is a turbo drag for sure 19-Oct-19 09:45 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-50CD8.png 19-Oct-19 09:47 AM Perfect for what I need 19-Oct-19 09:47 AM But out of my price range :( 19-Oct-19 09:47 AM they're really low pumping speed tho 19-Oct-19 09:47 AM yeah, but indestructible 19-Oct-19 09:47 AM @Black Lemming I can offer you a microfocus x-ray tube for the turbodrag if you want a trade 19-Oct-19 09:47 AM or, seeing that you like lasers, an old soviet hene, with brewster output windows 19-Oct-19 09:47 AM though the latter is not a very enticing offer 19-Oct-19 09:49 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20191019_184803-A8FAF.jpg 19-Oct-19 09:49 AM 150 L/s turbo vs 4 L/s drag 19-Oct-19 09:50 AM That’s a big baby xD 19-Oct-19 09:50 AM the 5011 is a 7.5l/s pump 19-Oct-19 09:50 AM teeny tiny 19-Oct-19 09:50 AM but it should be fine for my application 19-Oct-19 09:50 AM I have a Soviet hene laser already (30mw) 19-Oct-19 09:50 AM 30? 19-Oct-19 09:50 AM I have a 26! 19-Oct-19 09:50 AM it even works 19-Oct-19 09:51 AM It’s supposed to be 30, but when getting age they loose some power lol 19-Oct-19 09:51 AM I have the LGN-111(ЛГН-111) 19-Oct-19 09:51 AM I’d love to find a pulsed ruby laser though 19-Oct-19 09:52 AM I know a seller in Russia that seemed to have huge stocks of huge ruby rods 19-Oct-19 09:52 AM for not very much 19-Oct-19 09:52 AM or, knew 19-Oct-19 09:52 AM Rods are only part of my solution it requires a xenon flash lamp and the whole cavity stuff 19-Oct-19 09:52 AM those are easy though 19-Oct-19 09:53 AM I’m not équiped to actually construct a laser here (yet) xD 19-Oct-19 09:53 AM believe me, you are 19-Oct-19 09:53 AM just... not a very good one 19-Oct-19 09:53 AM Maybe with a good tutorial xD 19-Oct-19 09:53 AM For holography I need quite nice properties 19-Oct-19 09:54 AM with a powerful enough set of flashlamps, you can wrap the whole contraption in alu foil and it'll lase 19-Oct-19 09:54 AM Polarity can be managed ( and irrelevant for pulsed ), but cohérence length is a must 19-Oct-19 09:54 AM Also the high voltage initiator, no clue how to deal with it in a safely manner lol 19-Oct-19 09:54 AM I have an « agreement » with my wife... eh 19-Oct-19 09:55 AM All you need is one of those "400kv" black box igniters from ebay 19-Oct-19 09:55 AM They're not enough to kill you, but enough to strike up a flashlamp or two 19-Oct-19 09:55 AM Well ok they're enough to kill you 19-Oct-19 09:55 AM If you're particularly determined to die 19-Oct-19 09:56 AM Could be worth testing but for holography purposes I’d need to check the maths first xD 19-Oct-19 10:02 AM let's move this conversation to #off-topic-thats-sometimes-on-topic :) 19-Oct-19 10:14 AM A multimeter can kill you too, if you are even more determined to die. 19-Oct-19 10:15 AM *beats nixie to death with my 27/FM 19-Oct-19 10:22 AM 27/FM? 19-Oct-19 10:25 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20191019_192421-F46CB.jpg 19-Oct-19 10:25 AM one hell of a brick 19-Oct-19 02:18 PM What's the diff between a turbo and a turbo drag? 19-Oct-19 02:18 PM I thought that was just marketing/branding 19-Oct-19 02:22 PM different working principle 19-Oct-19 02:24 PM let's move this to #off-topic-thats-sometimes-on-topic damn it 19-Oct-19 02:24 PM both are fast spinning, but the turbopump uses blades to shove away the last few molecules while the drag uses... 19-Oct-19 02:24 PM ok, let @GigaSquirrel explain in #off-topic-thats-sometimes-on-topic 19-Oct-19 02:24 PM :-D 20-Oct-19 09:15 AM @GigaSquirrel I see no such commentary over in that other room 20-Oct-19 09:17 AM it's not my issue @Pan Da is sulking just because I told you to move this conversation to the appropriate room 20-Oct-19 09:19 AM i'm sorry i thought you'd be able to explain that much better. i promise not to make that mistake again! 20-Oct-19 09:19 AM eh, it seems pretty on-topic for in here, since it affects swap-meet purchasing 20-Oct-19 03:28 PM I'm thinking of trading/selling my FLIR T440bx($5-6k value, 650C range option) and a FLIR PTZ-35-MS($1.5-2k value) together for a newer(not new, used is ok!) FLIR E53($5-6k-ish) or higher(75, 85, 95, T530, etc). PM me if you're interested. https://i.spirit.re/Om2P4.jpg 21-Oct-19 10:23 AM Can you ship to North Korea? 21-Oct-19 10:24 AM only via icbm 21-Oct-19 10:25 AM xD 21-Oct-19 11:28 AM North Korea, no 21-Oct-19 11:28 AM South, maybe 23-Oct-19 08:01 AM How much is a dry scroll pump, drag turbo, and controller worth? 23-Oct-19 08:01 AM Supposedly around 18000 hours, which seems like less than 2 years of use, and according to @GigaSquirrel (I think) manual about oiling bearings, within two maintenance periods 23-Oct-19 08:01 AM Seller is only going as low as $950... Which seems too high given I don't have an immediate purpose like this week for such pumps 23-Oct-19 08:01 AM And I'm plain dumb about flanges and how to interface (I guess that would be the next step supposing it all worked) 23-Oct-19 08:17 AM Err, I guess that's actually the 3rd maintenance period where @GigaSquirrel documents say to grind and replace bearings... Hmm 23-Oct-19 08:19 AM depends on the pump. as i mentioned before, for my other drag pump the specification says 16000 / 32000 / 48000 hours (oil / oil / replace) 27-Oct-19 03:27 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20191027_232403-6BEAD.jpg 27-Oct-19 03:27 PM yay! 27-Oct-19 03:27 PM but it's getting late, I'll take a closer look at them this week 27-Oct-19 03:27 PM shipping should happen soon 27-Oct-19 03:27 PM ish 27-Oct-19 05:25 PM awesomeee 29-Oct-19 11:28 AM Some the shipping to Belarus is prohibitively expensive, I'm handing this deal over to anyone who wants it here 29-Oct-19 11:28 AM Super cheap CF6" turbo that was confirmed spinning smoothly but AS-IS, only $61 29-Oct-19 11:28 AM https://www.ebay.com/itm/254239440925 29-Oct-19 11:28 AM Seller seems very friendly 29-Oct-19 11:33 AM oh old boy 29-Oct-19 11:33 AM I think people have guides on how to re-bearing those 29-Oct-19 11:33 AM controllers should be easy to find that old 29-Oct-19 11:33 AM that is 4.5" CF though not 6" 29-Oct-19 11:33 AM 6" has twice as many bolt holes 29-Oct-19 11:33 AM here is a good guide 29-Oct-19 11:33 AM https://www.kimballphysics.com/dimensions-p-n-system-bolts 29-Oct-19 11:35 AM it's also $60 29-Oct-19 11:35 AM cheap enough to have as an ornament if it's dead 29-Oct-19 11:35 AM oh yea I was saying its a pretty good deal and since there should be a guide on rebuild its probably a good beginner turbo 29-Oct-19 11:36 AM wish it wasn't so expensive to ship here 29-Oct-19 11:36 AM :( 29-Oct-19 11:36 AM I was just letting someone know its 4.5" conflat not 6" :) 29-Oct-19 11:36 AM 110eur shipping :/ 29-Oct-19 11:36 AM yeah :( 29-Oct-19 11:36 AM if someone NEEDS a 6" conflat turbo or an adapter plate to get to that just letting them know they should accomidate 29-Oct-19 11:36 AM yea its even 30 bucks to the US 29-Oct-19 11:36 AM thats a good canada buy if its cheaper to ship within canada 29-Oct-19 11:37 AM I asked about cheaper, he offered like 80 eur for 100% untracked surface shipping and no refunds 29-Oct-19 11:37 AM :DDDDDDD 29-Oct-19 11:37 AM which I'm sure would be lost, given that there's no surface between Canada and Europe 29-Oct-19 11:37 AM trucks probably just drive off the coast 29-Oct-19 01:16 PM what is this oil-drop looking spot on the right? https://i.ebayimg.com/images/g/CfEAAOSw~Mpcyeuy/s-l1600.jpg 29-Oct-19 01:18 PM oil 29-Oct-19 01:18 PM it's a sump pump, not minimal lube 29-Oct-19 01:18 PM probably sat on its side, oil leaked into the chamber 29-Oct-19 01:18 PM ah, hmm 29-Oct-19 01:18 PM seems like to best control one of these you'd not only need the motor drivers, but also the hall effect or back-EMF for speed sensing, and presumably you'd want to hook in to the temperature sensor too, right? 29-Oct-19 01:18 PM I don't think either of the latter pieces were part of NikasFauth's github project, right? 29-Oct-19 01:20 PM it's a 3ph turbo, a cheap RC ESC will probably do that 29-Oct-19 01:20 PM temp sensing is easy to add 29-Oct-19 01:20 PM yeah but you want speed and temp, right? 29-Oct-19 01:20 PM an RC ESC will inherently know speed 29-Oct-19 01:20 PM you just have to modify the firmware to have a ramp and speed cap 29-Oct-19 01:25 PM Is that gonna be the same then as the niklasfauth project? 29-Oct-19 01:25 PM https://raw.githubusercontent.com/NiklasFauth/stm32-turbotronik/master/turbotronik.png 29-Oct-19 01:25 PM I guess less to worry about with an RC ESC? 29-Oct-19 01:35 PM wth is tha... oh. just seen the username... 29-Oct-19 01:35 PM hehe 29-Oct-19 01:35 PM and 29-Oct-19 01:35 PM maybe this is a dumb question 29-Oct-19 01:35 PM but waht is the opamp feedback for 29-Oct-19 01:35 PM it checks whether the bridge does as it should? 29-Oct-19 01:41 PM I'm guessing it's for backemf sensing 29-Oct-19 01:45 PM well for $90 I grabbed that turbo 29-Oct-19 01:45 PM @Deleted User thanks! I'd seen that a week or so ago, but maybe it was pricier or something, I remember that "oil spot" pic 29-Oct-19 01:48 PM now to either find a chamber, or find someone close with a TIG welder who will work for reasonably cheap prices 29-Oct-19 01:49 PM invest in a tig welder 29-Oct-19 01:49 PM lots of fun 29-Oct-19 01:54 PM hehehe 29-Oct-19 01:54 PM oh man 29-Oct-19 01:54 PM are all TIG wirefeed, or some stick? 29-Oct-19 01:54 PM https://portland.craigslist.org/clk/tls/d/camas-accurate-tools-3-in-1-arc-welder/7007068692.html 29-Oct-19 01:55 PM neither 29-Oct-19 01:55 PM wirefeed is MIG / MAG, stick is... well stick ^^ 29-Oct-19 01:57 PM https://portland.craigslist.org/clk/tls/d/vancouver-miller-250-dialarc-hf-welder/7006306833.html 29-Oct-19 01:58 PM MIG/MAG feeds wire through the gun, TIG uses the person to do that 29-Oct-19 01:58 PM oh god no don't get that 29-Oct-19 01:58 PM that's... junk 29-Oct-19 01:58 PM hmm 29-Oct-19 01:58 PM it's a giant transformer welder 29-Oct-19 01:59 PM what features should I look for? 29-Oct-19 01:59 PM what price range? 29-Oct-19 01:59 PM a modern inverter welder with pulse and DC/AC switching 29-Oct-19 02:01 PM this seems to fit your description https://portland.craigslist.org/clk/tls/d/lincoln-200-ac-dc-high-frequency-tig-80/7008210052.html 29-Oct-19 02:01 PM "turn key" comes with cart and argon 29-Oct-19 02:01 PM I guess the amperage determines how thick of plates you can join? 29-Oct-19 02:01 PM or rather the depth of a weld 29-Oct-19 02:01 PM ? 29-Oct-19 02:02 PM basically the size of your weld 29-Oct-19 02:02 PM penetration, how much of the base metal it will melt, etc 29-Oct-19 02:02 PM heat 29-Oct-19 02:03 PM for vacuum sealing, I guess that doesn't need to be too much 29-Oct-19 02:03 PM but for not falling apart when you move it around, it does 29-Oct-19 02:04 PM stainless in "typical chamber thickness" should be 80-100 amps in my experience 29-Oct-19 02:04 PM hmm, that last link says TIG 130 amps 29-Oct-19 02:04 PM $2200 is a little steep feeling though 29-Oct-19 02:04 PM hmm, I wonder if this local FIB/SEM/TEM shop has a TIG 29-Oct-19 02:05 PM 60% duty cycle at 130 amp it says 29-Oct-19 02:05 PM they have a pretty sweet machine shop otherwise, so maybe 29-Oct-19 02:05 PM 200A max for this welder 29-Oct-19 02:07 PM does anyone here have a TIG at home? what did you pay? 29-Oct-19 02:08 PM raises hand 29-Oct-19 02:08 PM 600 for the welder and another ~400 for gas, helmet and all the other stuff you need 29-Oct-19 02:08 PM euros that is 29-Oct-19 02:08 PM but you can go cheaper 29-Oct-19 02:08 PM smaller bottle of Ar, different welder, cheaper helmet 29-Oct-19 02:11 PM ooo, that's a lot more stomachable than $2200 29-Oct-19 02:11 PM I have an autodimming helmet already 29-Oct-19 02:11 PM and some regular old goggles 29-Oct-19 02:11 PM you really wanna go auto with tig 29-Oct-19 02:13 PM opinions on this line of items? https://www.ebay.com/itm/Alcatel-Drytel-31-Pumping-Station-Please-View-Video-Of-Unit-Working/372752711671 29-Oct-19 02:13 PM want 29-Oct-19 02:13 PM ;~; 29-Oct-19 02:13 PM I think it's a diaphram pump + drag + controller 29-Oct-19 02:13 PM that's a drag pump 29-Oct-19 02:13 PM yeah 29-Oct-19 02:13 PM yep 29-Oct-19 02:13 PM drag with a diaphragmn, fully dry system 29-Oct-19 02:13 PM idk about rebuilding and parts 29-Oct-19 02:13 PM for "working" it seems an OK price... butttt 29-Oct-19 02:13 PM it's still not super cheap 29-Oct-19 02:14 PM I believe these were made for students 29-Oct-19 02:14 PM because you can vent them at full speed and they won't die 29-Oct-19 02:15 PM it also seems like maybe an 80s era piece 29-Oct-19 02:15 PM there's a video of it working 29-Oct-19 02:15 PM and spinning up to max speed 29-Oct-19 02:15 PM which scares me even more re: getting rebuild parts 29-Oct-19 02:15 PM it very well may be, my drag is from the mid 80s... 29-Oct-19 02:15 PM yeah drags are very old 29-Oct-19 02:22 PM As in they don't make them anymore, or they fell out of popularity? 29-Oct-19 02:24 PM fell out of popularity 29-Oct-19 02:24 PM I think they make one or two 29-Oct-19 11:08 PM Ceramic bearings turbos uses the remaining space around engine to include some Holweck drag stage 29-Oct-19 11:08 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-0480D.png 29-Oct-19 11:08 PM On the mag-lev ones there is not much space around the engine, the drag is limited 29-Oct-19 11:08 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-C5D10.png 29-Oct-19 11:08 PM Nest time I visit Pfeiffer I’ll check the trashs bins xD 29-Oct-19 11:10 PM Please do 29-Oct-19 11:10 PM Walk out with as much red stuff as possible 29-Oct-19 11:10 PM Also, pfeiffer now owns alcatel's vacuum... so if you see a spare 5011... ;) 29-Oct-19 11:10 PM They throw these ones regularly, out of R&D testing benches 29-Oct-19 11:10 PM really? 29-Oct-19 11:10 PM just... turbos, in the bin? 29-Oct-19 11:11 PM Many stuff, including turbos yes 29-Oct-19 11:11 PM I propose Vacuum Hackers write an open letter to Pfeiffer to establish a strategic free recycling partnership. 29-Oct-19 11:11 PM Picture a « pile of dead turbos » lol 29-Oct-19 11:11 PM They are in a recycling business for aluminum already 29-Oct-19 11:11 PM They put stuff in a big bin, then it vanishes, and another empty bin appears 29-Oct-19 11:11 PM With a small pile of cash 29-Oct-19 11:12 PM The real thing is they have to clean most of these out of fluor first 29-Oct-19 11:12 PM I'm sure everyone here would be delighted to pay 10x aluminium scrap prices for bleeding edge vacuum gear 29-Oct-19 11:12 PM Or unreacted primers lol 29-Oct-19 11:12 PM even if needs a bit of repair 29-Oct-19 11:13 PM Pfeiffer also through some pumps regularly when the metrology department states these are no longer suitable for « test benches » or whatever case in which a pump is needed 29-Oct-19 11:13 PM Especially while leak detector systems 29-Oct-19 11:13 PM Why must thou twist thine knife onto my heart 29-Oct-19 11:14 PM Massively used in testing leaks in freshly assembled dry pumps 29-Oct-19 11:14 PM You’re in Canada ? 29-Oct-19 11:14 PM Far from Pfeiffer’s bins 29-Oct-19 11:14 PM Nope, Belarus 29-Oct-19 11:14 PM Lots of people in the EU as well 29-Oct-19 11:15 PM Ok 29-Oct-19 11:15 PM I wonder what happens with a leak tester if the device leaks catastrophically 29-Oct-19 11:15 PM Does the leak tester just... turn into scrap? 29-Oct-19 11:15 PM Say you remove the negative sign from mbar-l/s :P 29-Oct-19 11:17 PM @Black Lemming do you happen to know much about their manufacturing processes? i would love to see how those inner spiral faces are machined 29-Oct-19 11:17 PM The leak tester is a complete system with its own safely valves and stuff 29-Oct-19 11:17 PM I can't imagine a turbo would survive a 1/10atm instant vent 29-Oct-19 11:17 PM I worked in innovation department yes xD 29-Oct-19 11:17 PM cnc lathe? fancy mill? whatever it is i would love to see 29-Oct-19 11:17 PM My bet is a 5-axis machining center and billet 29-Oct-19 11:17 PM These are completely automated machining 29-Oct-19 11:17 PM I guess these machines are « Kita » 29-Oct-19 11:17 PM The cylinder of aluminium is rotated by a few degrees then the carving tool follows a path from base to top according a calculated curvature 29-Oct-19 11:17 PM Then cylinder is rotated a bit 29-Oct-19 11:17 PM And it goes on for all the base paths 29-Oct-19 11:17 PM Then cylinder is rotated in some opposite way to carve the counter-paths 29-Oct-19 11:20 PM something like this? 29-Oct-19 11:20 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/1-0-4F404.png 29-Oct-19 11:21 PM This is no turbo but yes the machine looks pretty much the same 29-Oct-19 11:21 PM yeah, so single piece billet 29-Oct-19 11:21 PM 5 axis machines 29-Oct-19 11:21 PM You have to have a programmable « Grip » 29-Oct-19 11:21 PM These works H24 29-Oct-19 11:22 PM H24 tool steel? 29-Oct-19 11:22 PM no, that'd be dumb, H24 aluminium 29-Oct-19 11:22 PM Singing « dziim dziim - dziim dziim - dziim dziim » 29-Oct-19 11:22 PM H24 -> 24 hours a day 29-Oct-19 11:23 PM at some point I will buy a 5-axis mini mill and make my own adorable mini-turbos 29-Oct-19 11:23 PM Is it live tooling or more like a lathe tool? Not sure if something is getting lost in translation on "carving tool" or not 29-Oct-19 11:23 PM Tools are self-lubricated carbure 29-Oct-19 11:23 PM @LRM it's a 5 axis mill 29-Oct-19 11:23 PM carbide 29-Oct-19 11:23 PM With inner-oil capilaries 29-Oct-19 11:23 PM with through-coolant 29-Oct-19 11:23 PM I'm translating because I know the terms @Black Lemming 29-Oct-19 11:23 PM :P 29-Oct-19 11:24 PM I’m no mech xD 29-Oct-19 11:24 PM typical stuff for making impellers 29-Oct-19 11:24 PM Ahh okay that makes sense. The 5axis part made sense to begin with but i was stuck on "carving tool" lol 29-Oct-19 11:24 PM they're called carving tools in French I guess 29-Oct-19 11:24 PM very similar to what they're called in Russian 29-Oct-19 11:26 PM The turbo are evaluated based on the « sound » it makes 29-Oct-19 11:26 PM There must be a perfect music note 29-Oct-19 11:26 PM I'm guessing it's a little more complicated than that 29-Oct-19 11:26 PM but balancing rigs are pretty much that 29-Oct-19 11:26 PM It’s easier with maglev 29-Oct-19 11:26 PM high speed rotary encoder + high speed accelerometer 29-Oct-19 11:27 PM Cause it’s somehow correcting itself 29-Oct-19 11:27 PM measures "which way" it vibrates 29-Oct-19 11:27 PM it would be fun to try making a drag pump someday 29-Oct-19 11:27 PM True bearing are juste safeguards in case of power outage 29-Oct-19 11:27 PM static balancing is easy, dynamic balancing is where it gets tricky 29-Oct-19 11:27 PM the tolerances needed are fairly ridiculous from what i understand though 29-Oct-19 11:27 PM no, you can make really bad tolerance turbos 29-Oct-19 11:27 PM as long as they're perfectly balanced 29-Oct-19 11:27 PM you'll just have awful performance 29-Oct-19 11:28 PM To keep the whole system « dry » means keeping the inter-stage tolerances minimal yeah 29-Oct-19 11:28 PM Manage shaft heating too due to mater expanse with heat 29-Oct-19 11:29 PM you can get a turbomolecular pump by spinning a computer fan at 100krpm(assuming it doesn't shatter), but you'll get performance worse than the very first turbos ever invented 29-Oct-19 11:29 PM A maglev has issue with heat dispersion since no « calorific conductance » 29-Oct-19 11:29 PM eddy currents inside the rotor! 29-Oct-19 11:29 PM heats up in a vacuum, nowhere to dissipate 29-Oct-19 11:29 PM Only IR radiation 29-Oct-19 11:29 PM which shiny metal doesn't like to absorb very well 29-Oct-19 11:30 PM They’re studying some coatings in anodyzed R&D 29-Oct-19 11:30 PM Japanese pumps have had that for a while 29-Oct-19 11:30 PM I recently saw one on eBay with the coating flaking off 29-Oct-19 11:30 PM D: 29-Oct-19 11:30 PM Or ioninc enriched surface 29-Oct-19 11:31 PM wouldn't you want the surface to be very polished? 29-Oct-19 11:31 PM to not get molecules sticking to it 29-Oct-19 11:36 PM When it’s hot it does not stick 29-Oct-19 11:36 PM It’s the cold parts which condensates stuff 29-Oct-19 11:36 PM When pumping awful silicates or fluor 29-Oct-19 11:36 PM Or my favorite : silane 29-Oct-19 11:38 PM what do they use them for, to have these dangerous things end up in the turbos? 29-Oct-19 11:38 PM Mostly etching process in semiconductor chambers 29-Oct-19 11:39 PM At pfeiffer? 29-Oct-19 11:39 PM I thought that's a customer thing 29-Oct-19 11:40 PM Maybe when they get stuff sent back for service? 29-Oct-19 11:41 PM Back in time Alcatel was etching stuff and it was under the name of « AMMS advanced systems » 29-Oct-19 11:41 PM http://www.mvsystemsinc.com/img/rd-cluster-1.jpg 29-Oct-19 11:41 PM that's one industrial pressure cooker 29-Oct-19 11:41 PM They built stuff like this tool 29-Oct-19 11:41 PM You have air-lock entrance then distribution system and many process chambers, each chamber has its own primary and turbo pump 29-Oct-19 11:42 PM Thats a sexy vacuum system. Only nicer one I have seen was decked out in cryopumps for wafer ovens 29-Oct-19 11:43 PM Wafer ovens are the most critical part of semicon process 29-Oct-19 11:43 PM Because you cook like dozens of it over a long period of time. A pump failure means you trash 400k€ worth wafers lol 29-Oct-19 11:43 PM these woven have now double pumping system and such 29-Oct-19 11:44 PM yeah the system i saw was one the company had bought back from somewhere when they were done with it for about 5% of the cost 29-Oct-19 11:44 PM cant remember what company they said had them 29-Oct-19 11:45 PM Solar industry can reuse old systems cause the allowed error can be grosser 29-Oct-19 11:45 PM Dunno if my sentence actually means something lol 29-Oct-19 11:45 PM My English isn’t perfect 29-Oct-19 11:45 PM https://www.ebay.com/itm/123735248588 29-Oct-19 11:46 PM Yeah these beasts lol 29-Oct-19 11:46 PM I was picking up some stuff from them and they were showing off their other things in the warehouse 29-Oct-19 11:46 PM also had this https://www.ebay.com/itm/123724179571 29-Oct-19 11:46 PM was pretty impressive to see heh 29-Oct-19 11:47 PM The size of the chamber is impressive, must take ages to bring to 10-6 29-Oct-19 11:48 PM judging by the size of those cryopumps... 29-Oct-19 11:49 PM They said when it was in service last the pumpdown time was about 16hrs 29-Oct-19 11:49 PM but i am not sure to what level it was being pumped 29-Oct-19 11:49 PM something at vandenberg 29-Oct-19 11:50 PM very respectable 29-Oct-19 11:50 PM i wanted to ask them for a job but theyre 2hrs away without traffic 29-Oct-19 11:50 PM such a pity because i really hit it off with the guy who actually does the fabrication stuff 30-Oct-19 10:58 AM 16hours for pumping + cooldown was about what the a product at one of my former employers took to go from room temperature atm pressure to operation :P 30-Oct-19 07:20 PM if anyone is looking for an industrial robot, I found a nice one on eBay 30-Oct-19 07:20 PM https://www.ebay.com/itm/Thermo-Scientific-F3-Robot-Arm/173924356464 30-Oct-19 07:20 PM I have one like it - just rebranded as KUKA and with a KUKA controller 30-Oct-19 07:20 PM 3 phase AC servos inside, Tamagawa absolute-incremental encoders, harmonic drives on each axis 30-Oct-19 07:20 PM it's worth just around that price in parts alone, though I would definitely negotiate to get it much cheaper 30-Oct-19 07:52 PM but it has no controller so? 30-Oct-19 07:58 PM the servo drives are inside 30-Oct-19 07:58 PM they speak unidirectional RS422, but I don't have the protocol 30-Oct-19 07:58 PM it's worth buying, even with no controller OR servo drives 30-Oct-19 08:41 PM eh I've seen bigger robotic arms with controllers/software/pcs/ everything for like 500 bucks before, sure older but similar style arm... 30-Oct-19 08:41 PM I wouldn't exactly call 2500 a steal for funsies, for like legit need and use or if thats your only want in life sure absolutely 30-Oct-19 08:41 PM I wouldn't expect to pay over a grand for an old kuga with hunting, that being new and nice and shiny though I guess 30-Oct-19 08:41 PM its the same with like turbo pumps, you can get nice newer shiny turbos on ebay for 2500 bucks almost all day, but most here are just looking for something older that will work for a fraction of that 30-Oct-19 08:52 PM this robot is unique in that it uses harmonic drives for the axes and relatively powerful, easy to drive servos 30-Oct-19 08:52 PM something that is quite rare, and nearly nonexistent in larger robots 30-Oct-19 08:52 PM just because they're similar, doesn't mean they have similar performance 30-Oct-19 08:52 PM an old KUKA KR150 or KR350(~1800kg) with a totally ancient KRC1 controller and pendant may cost you $900, but the moment you boot it up you'll be itching to put the controller through the wood chipper and regret the huge amount of backlash due to massive(end of life) mechanical wear of the old sumitomo cyclo gearboxes 30-Oct-19 08:52 PM trust me, I know what I'm talking about with industrial robots 31-Oct-19 05:39 PM @Applied_Ion you need one of these to do parylene coating on your engine's PCBs :) https://hgrinc.com/productDetail/Not-Specified-Yet/Used-Speedline-Lab-Coater/10190570062/ https://hgrinc.com/productDetail/Not-Specified-Yet/Used-Speedline-Lab-Coater/10190570061/ https://static1.squarespace.com/static/57b26cc76b8f5b7524bf9ed2/t/58092f7a6b8f5bba8fbd077e/1476996988906/LABCOTER_2_manual_OM_FF_2010__05-07.pdf 31-Oct-19 06:11 PM Lol yeah if it was only 999 cheaper 31-Oct-19 06:11 PM I will look at concoating the pcbs, there are some varnishes I can just hand brush over rated for space applications 31-Oct-19 07:27 PM HGR does drop prices drasticly before a last chance price 31-Oct-19 07:27 PM they could go down to like 200 before they scrap them 31-Oct-19 07:27 PM that is if they don't sell first 31-Oct-19 07:27 PM The SEM I got from there was like posted for over a grand originally and ended up selling for like 200 I think? 31-Oct-19 07:28 PM I wonder if it would be economical to buy a trivac pump from them and ship to Belarus 31-Oct-19 07:28 PM ooh, this might be worth it 31-Oct-19 07:28 PM https://hgrinc.com/productDetail/Electronics/Used-Cr-Technology-X-ray-Control-Unit/06181420008/ 31-Oct-19 07:28 PM a high end printer and a hamamatsu x-ray head controller 31-Oct-19 07:28 PM you can find controllerless heads pretty cheap 31-Oct-19 08:22 PM @Treehouseman 31-Oct-19 08:24 PM is it for microfocus? 31-Oct-19 08:24 PM I kinda wrote it off since it looked like a generic video printer and xray power supply 31-Oct-19 08:24 PM yes 31-Oct-19 08:24 PM for those red hamamatsu x-ray bricks 31-Oct-19 08:24 PM the controller on the bottom is one for those 31-Oct-19 08:25 PM how much do the heads go for? 31-Oct-19 08:25 PM anywhere from 300 to 2300 31-Oct-19 08:25 PM all in as-is condition, pretty much always 31-Oct-19 08:25 PM but most heads are quite on the bleeding edge of microfocus 31-Oct-19 08:25 PM 5-15 microns 31-Oct-19 08:29 PM One like this? https://www.ebay.com/itm/Hamamatsu-x-ray-tube-L9631/383129380125?hash=item59344a651d:g:PF0AAOSwxppdaWnh 31-Oct-19 08:29 PM no, that's the new generation, embedded controller 31-Oct-19 08:29 PM look for the ones with the big multi-way connector on the back 31-Oct-19 08:30 PM https://www.ebay.com/itm/HAMAMATSU-L7902-X-RAY-TUBE-as-photo-sn-0287-Untested-sale-As-Is/174062766670?hash=item2886f30a4e:g:pDsAAOSwE-pdoqoB 31-Oct-19 08:30 PM yup 31-Oct-19 08:30 PM they're all in thailand 31-Oct-19 08:30 PM most are 31-Oct-19 08:31 PM any particular reason? 31-Oct-19 08:31 PM equipment scrappers 31-Oct-19 08:33 PM hmm, I can get someone to snag the controller for me, but I'd have to just risk it with one of the thailand xray heads, ebay doesn't have any listed as sold from the us 31-Oct-19 08:33 PM I'd still need to get a sensor as well 31-Oct-19 08:34 PM if you hack the kit into submission, you'd have a bleeding edge x-ray system 31-Oct-19 08:34 PM if not, you've got a nice potted paperweight 31-Oct-19 08:34 PM I'm currently still just aiming a dslr at a 400 iso film cassette 31-Oct-19 08:34 PM hopefully you have enough lead 31-Oct-19 08:35 PM for what? 31-Oct-19 08:35 PM y'know, for the huge amount of death particles coming out of these? 31-Oct-19 08:35 PM My current xray head is a dental unit, I just stay out of the room 31-Oct-19 08:35 PM that's not enough 31-Oct-19 08:35 PM nowhere NEAR enough 31-Oct-19 08:35 PM oh, the microfocus, yeah, it's a fair bit higher energy, that'll likely require some shielding 31-Oct-19 08:35 PM uh, measurements say otherwise 31-Oct-19 08:36 PM with? 31-Oct-19 08:36 PM A counter, can't register over background when standing away from the door 31-Oct-19 08:36 PM what counter 31-Oct-19 08:36 PM I do still have lead vests I wear but the counter stays silent aside from background 31-Oct-19 08:36 PM one of the gmc-300's 31-Oct-19 08:37 PM garbage 31-Oct-19 08:37 PM uses a noname thick glass tube that is almost entirely blind to x-rays of not-incredible dose rates 31-Oct-19 08:37 PM this is why I scold people who play with x-rays with no knowledge of theory 31-Oct-19 08:38 PM It's not like dental offices have much better, at least not the dentist I go to, there's no lead paneling on the walls 31-Oct-19 08:38 PM even dental heads at 70keV is high enough energy to scatter several times and give you a significant dose outside a room 31-Oct-19 08:38 PM dental offices have very heavy, x-ray absorbing paint 31-Oct-19 08:38 PM and often lead sheeting inside walls, if not concrete 31-Oct-19 08:38 PM if you're in the US, your drywall and wood house is paper thin compared to that 31-Oct-19 08:38 PM I have a meter about twice as sensitive as your GMC-300, and it stays dead silent while a specialized x-ray scintillator reads roughly 100x background from a 30kV x-ray tube from across the room 31-Oct-19 08:38 PM 30kV! That barely goes through a palm! 01-Nov-19 02:41 AM Would it be possible to use the L7902 Without a controller, they probably just use Analog Voltages to Controlle it some other ones use Serial but this seams to be a bit older. Because that Price for such a unit is very cheap but i dont know if anyone hat success in doing so 01-Nov-19 09:52 AM But not sure how customs would handle a x ray head, i presume it would be likely it wouldn't make it 01-Nov-19 11:06 AM It should be possible to control an L7902 without a controller, yes - they do use analog voltages. 01-Nov-19 11:06 AM But I've seen the insides of one(it's somewhere in these channels, look for images from me), and they are quite complicated 01-Nov-19 11:34 AM oh yes images would be good than anleast i know what level it is build, do you have one, or a friend, i will have a look in the channels 01-Nov-19 11:37 AM I posted what I had somewhere in here 01-Nov-19 11:37 AM https://discordapp.com/channels/513115950501855256/513115950501855261/626644731845148692 01-Nov-19 11:37 AM here 01-Nov-19 11:43 AM oh thanks, but looks ok should be possible to drive it DIY, i have some background in HV power supply design, did you get it working with a controler? 01-Nov-19 11:43 AM I didn't get it, the seller disassembled it for me, then refused to sell it 01-Nov-19 11:43 AM I'm getting an integrated controller head sooner or later 01-Nov-19 11:43 AM I already bought it, it's just sitting in the US waiting to be shipped 01-Nov-19 11:45 AM i talked to the guy from Thailand and i would get a good price for the unit without Controller, but not sure if i can get it though german customs it is a bit illegal to do things like this here 01-Nov-19 11:45 AM heh, yeah, that's my worry too 01-Nov-19 11:45 AM it's technically not illegal to own here, but illegal to do anything but own 01-Nov-19 11:47 AM as far as i remeber importing is also problem here, i think owning would be ok but using it again not but im not 100% sure law is not the easiest to interpret especially that it is mainly for Commercial use 01-Nov-19 11:48 AM yeah importing is the issue here too lol 01-Nov-19 11:48 AM if you have it, it's safe 01-Nov-19 11:48 AM if you want to have it... it's somehow not 01-Nov-19 11:48 AM ¯\_(ツ)_/¯ 01-Nov-19 11:48 AM i will see if i can arange it with the seller to hide what it really is from the customs 01-Nov-19 11:48 AM yes unfortunately 01-Nov-19 11:49 AM I once again propose an international nerd identity card "why do you want this bit of dangerous gear" presents card "nevermind sir, you're all clear" 01-Nov-19 11:49 AM defiantly! 01-Nov-19 11:49 AM i will see if i can anrage it, it is not that expensive im willing to risk 300€ for it 01-Nov-19 11:51 AM damn, he's willing to let it go for 300? 01-Nov-19 11:51 AM he was trying to scalp me at 900! 01-Nov-19 11:52 AM oh ok maybe i can get the Controller too, or maybe i get the totally damaged unit 01-Nov-19 11:52 AM there's a single pcb inside the controller 01-Nov-19 11:52 AM with a lot of discrete logic and wires 01-Nov-19 11:54 AM depening how it is build when there is no control loop in the Controller unit this would be good, if only set and read back values would be send over the cable 01-Nov-19 11:54 AM I think there's just analog signals 01-Nov-19 11:54 AM hmm and probably heater current would be set in the head because it would have to be adjusted per unit 01-Nov-19 11:55 AM it's variable 01-Nov-19 11:55 AM voltage, current, and focal spot(small/large) if it's an option 01-Nov-19 11:56 AM so it is set by the controller some do the Focus based on the V and I of the tube 01-Nov-19 11:56 AM I think the actual focus is controlled by the brains of the tube, since the HV PSUs are inside there 01-Nov-19 11:56 AM but some controllers have focus options that you can select with a button/command 01-Nov-19 11:56 AM larger focus -> more current 01-Nov-19 11:56 AM smaller focus -> less current 01-Nov-19 11:58 AM ok, a bit more reverse engineering on the Head side but should be manageable 01-Nov-19 11:58 AM he as currently one unit for $279,98 in ebay 01-Nov-19 11:59 AM the l7902 is a 5 micron focus head 01-Nov-19 11:59 AM with I think a 15 or 50 micron "high current" mode 01-Nov-19 12:00 PM you need more intensity? or what do you mean? 01-Nov-19 12:00 PM yeah, the large focus mode is to push more current through it 01-Nov-19 12:01 PM ok i dont need that much but the 100kV are nice, and dangerous;) 01-Nov-19 12:01 PM i will let you know when i convinced my self to buy one ;), it is so tempting 02-Nov-19 12:33 AM For you guys to know my eBay drag pumps have an automated acceptance on offers at 300€ or more. Also if one is willing to travel to France I can give both pumps for the price of one ( to spare me the pain of shipping cause I’ m a lazy lemming xD ) 02-Nov-19 01:39 AM Oh man, if you're offering a drag+brain for 150 I'd be tempted to take that offer 02-Nov-19 01:39 AM (if I didn't live halfway across Europe) 02-Nov-19 01:39 AM I could send you a microfocus x-ray tube... or a HeNe laser... or a radiation pager... Or a mix of said items... 02-Nov-19 11:23 AM But you @GigaSquirrel might want a pager or two 02-Nov-19 11:24 AM I have only one drag pump and a use for it, sorry 02-Nov-19 11:24 AM but he has a drag pump 02-Nov-19 11:24 AM but @Pan Da might be interested 02-Nov-19 11:24 AM or @Pan Da (second ping for good measure) 02-Nov-19 11:25 AM @Pan Da knows aller guten dinge sind drei 02-Nov-19 11:25 AM :D 02-Nov-19 11:26 AM I understood that without google translate 02-Nov-19 11:26 AM why no oildiff for you @Deleted User ? 02-Nov-19 11:26 AM because icky 02-Nov-19 11:26 AM and backstreaming, and baffles, and startup times, and shutdown times, and gating 02-Nov-19 11:26 AM plus I don't want a free space heater sitting in my room at 200C 02-Nov-19 11:26 AM it's really not tuat bad, except for the long waiting times 02-Nov-19 11:26 AM with DC704 that is 02-Nov-19 11:27 AM the only lewd oildiff fluid™ 02-Nov-19 11:27 AM Tetramethyl tetraphenyl trisiloxane 02-Nov-19 11:28 AM hehe 02-Nov-19 11:28 AM but we should move this to #off-topic-thats-sometimes-on-topic 02-Nov-19 02:31 PM You people and your mechanical pumps... It would be fun to know what would happed if you just hook this up to a roughing pump and call it a day 02-Nov-19 02:31 PM https://edispositions.nextlot.com/public/sales/86749/lots/18447948 02-Nov-19 02:31 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/15727303305496180800127537427827-BE4D0.jpg 02-Nov-19 02:31 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/15727303523353031557270809093852-AF477.jpg 02-Nov-19 02:31 PM Venting to atmosphere too quickly should be ok, right? 02-Nov-19 02:39 PM as long as the brains prevent it from immediately arcing over 02-Nov-19 02:39 PM but remember that you have to bake them for quite a while to get them to work 02-Nov-19 02:39 PM that's why they ship with a sealed and evacuated conflat cap 02-Nov-19 02:52 PM yea ion pumps suck to maintain for any kind of temporary vacuum tbh, they are best for permeant install like to keep the gun chamber on an SEM pumped down pretty much 24/7 even when the machine is off. And when you need to replace the filament the ion pump is gated off so it always stays pumped down 02-Nov-19 02:56 PM I never baked my IGP on my FIB, and that machine was powered off for at least 2 years 02-Nov-19 02:57 PM its probably also gated on the IGP and that probably stayed at a pretty low vacuum unless you overrided stuff to manually open the IGP to atmosphere 02-Nov-19 02:57 PM I'll have to vent it when I rewet my LMIS 02-Nov-19 02:57 PM I highly doubt they require the IGP opened to atmosphere for any maintenance item or oprational item 02-Nov-19 02:58 PM Seems like moisture contamination from a big huge igp just means it would plate oxides 02-Nov-19 02:58 PM Yeah it will be, I'm pretty sure 02-Nov-19 02:58 PM There's no valve between it and the gun as far as I can tell 02-Nov-19 02:58 PM if you have docs for that thing find the vacuum gate diagram 02-Nov-19 02:58 PM Neither on the FIB at my part-time 02-Nov-19 02:59 PM but yea all I ever heard you absolutely do not want to get an IGP to atmosphere and if you do you absolutely need to bake it out before turning it on unless you like absolutely wasting it's life away 02-Nov-19 02:59 PM I know IGPs are always shipped sealed off with a copper pinch tube 02-Nov-19 02:59 PM I have a few that are either old rebuilds or NOS 02-Nov-19 02:59 PM the other fun part about IGPs is some of them have weirddd HV connectors on them heh 02-Nov-19 03:00 PM I think that's just to eliminate slowdown at installation 02-Nov-19 03:00 PM slowdown? you have to undo however many bolts the conflat has to take that blanking plate off with the pinchoff 02-Nov-19 03:00 PM Someone told me a week or two ago vented igps should be fine unless you like, stored them in the rain 02-Nov-19 03:00 PM Slowdown in bakeout time to get to high vac 02-Nov-19 03:00 PM Bakeout/pumpdown with rough 02-Nov-19 03:00 PM But if you only wanted medium vac... That's my question, could you just rough it and flip it on, it might not be great vac, but that pump is listed at like 270 liters per minute 02-Nov-19 03:00 PM It seems like a monster 02-Nov-19 03:00 PM I'm guessing the tradeoff as your post-rough pump with no turbo is the power consumption is probably pretty high 02-Nov-19 03:00 PM Just based on the shear size of it 02-Nov-19 03:24 PM 270 liters per minute 02-Nov-19 03:24 PM or 4.5l/s 02-Nov-19 03:24 PM slower than a teeny weeny turbodrag 02-Nov-19 03:28 PM heh yea... IGPs are best when your nearing UHV and also really good for certain gasses I believe 02-Nov-19 03:28 PM but a teeny weeny turbodrag has bad compression with light gases 02-Nov-19 03:28 PM and can't reach -14 02-Nov-19 03:31 PM yea 02-Nov-19 03:32 PM rough -> [drag/turbo/diff] -> [IGP/discharge/penning] -> voodoo 02-Nov-19 08:53 PM So old IGPs that have a lot of hours may not be recoverable if vented 02-Nov-19 08:53 PM Or stored for very very long times 02-Nov-19 08:53 PM And in situations where baking is hard your also going to want to advoide exposure as much as possible 02-Nov-19 08:53 PM I just did a bring up an old pump that had been at partial atmosphere for a while, it took like a day of pumping with a turbo, a magnet free startup, and then a extended time in protected startup atbreduced voltage with the bypass valve open, but I was eventually able to get to a good vacuum 02-Nov-19 08:53 PM Getting a ion pump to start up at rough vacuum can be very hard 02-Nov-19 08:53 PM The pump starts to heatup so much from the plasma that it just outgasses while you pump so some of the pumping mechanisms stop working while others react all the titanium 02-Nov-19 08:53 PM So you end up with the pump that doesn't work for some gasses but does pump others 03-Nov-19 02:13 PM https://www.ebay.com/itm/AMRAY-1000A-SCANNING-ELECTRON-MICROSCOPE-SEM-/323962150877 03-Nov-19 02:13 PM $100 for anyone near Illinois 03-Nov-19 02:14 PM Cut cables 03-Nov-19 02:14 PM Including high voltage 03-Nov-19 02:20 PM Bag of harbor freight wire nuts, right? 03-Nov-19 02:20 PM Yeah definitely good to 30kv 03-Nov-19 02:22 PM I've been looking for a FIB column lately that will fit in my bigger accessory port. One of Eric Sanchez's graduates said you can use them as a smaller sized SEM column. 03-Nov-19 02:22 PM Still need to take off my blocking plate to measure diameter properly 03-Nov-19 02:23 PM Let's go to #general 03-Nov-19 08:27 PM man those amrays have been coming out of the woodwork, I have seen 3-4 for sale out of the midwest alone this year 03-Nov-19 10:39 PM Are they any good? 03-Nov-19 10:44 PM for 100 bucks they're good regardless of whether they're good or bad 03-Nov-19 10:56 PM for $100 you could almost pay freight anywhere in the USA and still come out ahead (assuming you wanted/needed the parts) 03-Nov-19 11:01 PM I've looked at freight prices and quotes for moving a SEM like that, it's not cheap at all... Especially if the seller doesn't have a loading dock/willing to help 03-Nov-19 11:01 PM If you just want a few parts of it, like a column to slap onto your FIB, that's another story. Best case is of course to drive over and do it yourself 03-Nov-19 11:07 PM yea freight will be anywhere from like 300-1000 for something like that depending on the location, what they will do to help/etc 03-Nov-19 11:07 PM also that one wouldn't be worth it with the cut cable and everything but most of them I have seen sell for like the 100-500 range 03-Nov-19 11:07 PM And there's no guarantee that your stuff will arrive intact 03-Nov-19 11:07 PM Or is intact in the first place when it comes to this thing 03-Nov-19 11:08 PM right, I mean freight companies generally don't know how to handle equipment like this, but these smaller simpler SEMs are less top heavy, so not too crazy 03-Nov-19 11:08 PM though these AMRAYS have no wheels on them... so they kinda need to be palletized 03-Nov-19 11:08 PM Also... 03-Nov-19 11:08 PM https://www.ebay.com/itm/High-Vacuum-Chamber-includes-custom-cart/283663752000 03-Nov-19 11:08 PM drool 03-Nov-19 11:10 PM https://www.ebay.com/itm/Vacuum-chamber-and-support-frame/193167717820 03-Nov-19 11:10 PM This was a thing... 03-Nov-19 11:10 PM WOW 03-Nov-19 11:10 PM The seller might have bid on it himself though 03-Nov-19 11:10 PM relisted and took it down soon after 03-Nov-19 11:11 PM lol wth 03-Nov-19 11:11 PM if people want an amount for something they either need to put a reserve or start it at the price they want 03-Nov-19 11:11 PM but man thats a wonderful piece, only fun part would be blanking that load-lock hole 03-Nov-19 11:12 PM And the five 13.5" CF ports? 03-Nov-19 11:12 PM you can get 13.5" conflat 03-Nov-19 11:13 PM Man, shipping that thing and capping all ports are gonna cost an arm and a leg 03-Nov-19 11:13 PM its less common but blanks are basically ALWAYS available 03-Nov-19 11:13 PM and you could always get a blank and weld in adapters to smaller conflat 03-Nov-19 11:13 PM just would need a lathe big enough to open a hole in the blank 03-Nov-19 11:13 PM also dang 03-Nov-19 11:13 PM https://www.ebay.com/itm/10-OD-UH-Vacuum-Chamber-for-field-emission-measures/333381636044 03-Nov-19 11:13 PM wish I was in texas 03-Nov-19 11:13 PM thats a great deal 03-Nov-19 11:14 PM Woah, with the turbo as well? 03-Nov-19 11:14 PM yea, looks like a nice big one too 03-Nov-19 11:14 PM https://i.ebayimg.com/images/g/JEQAAOSw8BNdHPCc/s-l500.jpg 03-Nov-19 11:14 PM like at-least 12" conflat turbo there 03-Nov-19 11:14 PM controller would be fun to find 03-Nov-19 11:14 PM but for the price who cares 03-Nov-19 11:16 PM I wonder if he would be willing to part things out if no one gets this after a while 03-Nov-19 11:17 PM honestly it would just be best to get it freighted as a unit then sell parts to make part of your money back 03-Nov-19 11:17 PM I don't think I know anyone in houston sadly to help freight the thing but yea would be the best option 03-Nov-19 11:19 PM Hmm, I know someone, but I think I need to take out a loan to do this lol 03-Nov-19 11:20 PM well what do you need off it? 03-Nov-19 11:20 PM just the main chamber, the turbo, want it all? lol 03-Nov-19 11:20 PM more-so curious but also wondering if I could help and split the cost somehow, and if we got it freighted to my place we could break it down here 03-Nov-19 11:20 PM I actually have some space in the basement again after the last month or two of purge 03-Nov-19 11:21 PM I don't "need" anything off of it technically. But mainly the feedthroughs and viewports 03-Nov-19 11:21 PM what size viewport do you need? 03-Nov-19 11:22 PM Purge? Did you sell anything? 03-Nov-19 11:22 PM oh not HV stuff 03-Nov-19 11:22 PM old PC crap and scrap I've had kicking around 03-Nov-19 11:22 PM if it was anything anyone here would want I would have posted it here first :) 03-Nov-19 11:22 PM 4.5" and 6" viewports. And a few 2.75" would be nice too (best if it's quartz) 03-Nov-19 11:23 PM hrn I may be-able to spare a 4.5" not sure if I have any 6"... I know I have two 8" viewports 03-Nov-19 11:23 PM the one 4.5" I have is a bit of an odd one, may be quartz? not sure, comes out in an odd shape 03-Nov-19 11:23 PM I may have a photo one moment 03-Nov-19 11:33 PM hrm I'll have to get one 03-Nov-19 11:39 PM Wow, I would have bought that one in Bend 03-Nov-19 11:39 PM But it's gone 03-Nov-19 11:40 PM Well, if you contact the seller, you never know. If I remember correctly the second listing was supposed to run for 10 days ending this Wednesday 03-Nov-19 11:41 PM Well 17 bids on it 03-Nov-19 11:41 PM Unless you mean they might have more 03-Nov-19 11:41 PM https://www.ebay.com/itm/Vacuum-chamber-and-support-frame/193184177743 03-Nov-19 11:41 PM No, he listed the exact same thing again, just after the first listing ended 03-Nov-19 11:41 PM Then took it down the next day 03-Nov-19 11:45 PM Oh, weird 04-Nov-19 08:43 PM Are there any British people here that would be interested, and are capable of, tearing down some equipment for fun, learning, and profit? 04-Nov-19 08:43 PM I'm looking for someone local because while it's financially worth it, it's LARGE and HEAVY. 04-Nov-19 09:15 PM You might ask Chris99 on IRC 04-Nov-19 09:19 PM What IRC? @nmz787 04-Nov-19 09:27 PM ... 04-Nov-19 09:27 PM Freenode 04-Nov-19 09:28 PM * Chris99 :No such nick/channel * [Chris99] End of WHOIS list. 04-Nov-19 09:28 PM I guess he's not around right now 04-Nov-19 09:28 PM He signs on and off 04-Nov-19 09:28 PM I'll keep a lookout for when he's around 04-Nov-19 10:08 PM sorry, it's chris_99 04-Nov-19 10:09 PM still not there, maybe he will be later 04-Nov-19 10:47 PM well this should work for a few projects: https://www.ebay.com/itm/VACUUM-CHAMBER-C-E-Howard-Corporation/113857119658 04-Nov-19 10:53 PM Mikes electric stuff always seems down for sth like that 04-Nov-19 11:04 PM mike's not going to do it for me :P 04-Nov-19 11:04 PM I could ask dexterslab, I got stuff from him before 04-Nov-19 11:06 PM as in "mike's not good enough" or "you and mike don't get along"? 04-Nov-19 11:06 PM as in "I'd have to pay mike more than it's worth" 04-Nov-19 11:07 PM ah, ok 06-Nov-19 12:05 PM https://www.ebay.de/itm/193164618815 Now if it wasn't so damn expensive 06-Nov-19 12:46 PM At least it's free pickup 06-Nov-19 12:46 PM that kovar-boro seal would have to be hand-delivered on a pillow to survive a transatlantic shipment 06-Nov-19 01:12 PM they often have cool vacuum stuff but it is always super expensive 06-Nov-19 01:12 PM too bad because theyre only about an hour away from me 06-Nov-19 08:43 PM You would defiantly want to de mount the discharge tube and wrap it separately. Too much leverage on the seal otherwise 08-Nov-19 01:10 AM https://www.ebay.de/itm/264391966588 This might be a good deal, 'to I've heard that this type of pump often has issues with bearings 08-Nov-19 08:06 AM Adam has always told me to avoid them like the plague, since they are not worth their maintenance schedule which is just about every time you look at them... 10-Nov-19 10:26 PM https://www.ebay.com/itm/Ultra-High-Vacuum-System-Stainless-Steel-2-Level-Chamber-Laboratory-Lab-Pump/254378553334 10-Nov-19 10:26 PM pretty in the UK! 10-Nov-19 10:26 PM Also which I could right now but some nice 4/5 way ISO for a reasonable price! 10-Nov-19 10:26 PM https://www.ebay.com/itm/ISO-100-ISO-160-Cross-for-High-Vacuum/174092104086 10-Nov-19 10:26 PM https://www.ebay.com/itm/ISO-100-5-WAY-CROSS-FOR-HIGH-VACUUM/174092152011 10-Nov-19 10:26 PM https://www.ebay.com/itm/ISO-100-5-WAY-CROSS-FOR-HIGH-VACUUM/174092165630 11-Nov-19 07:04 AM why is that one cross so much more expensive than the other one 11-Nov-19 12:11 PM https://www.ebay.de/itm/143429586205 11-Nov-19 12:15 PM thosa are some painful prices 11-Nov-19 12:15 PM honestly I think 70 bucks isn't too bad 11-Nov-19 12:15 PM most of them are very old NOS and expired 11-Nov-19 12:15 PM the helium leaks out of them 11-Nov-19 12:15 PM they might still work but it wouldn't be accurate to spec 11-Nov-19 12:16 PM well mine are still in spec 11-Nov-19 12:16 PM didn't measure the efficiency, but corona ignition voltage and and the gas gain of proportional detectors still seem fine 12-Nov-19 08:17 PM https://hgrinc.com/productDetail/Inspection/Used-Branson-Plasma-Asher/10192240037/ 12-Nov-19 08:17 PM well if anyone is starting a silicon fab... 12-Nov-19 08:17 PM But on a large scale haha 12-Nov-19 08:22 PM Or an extreme dishwashing place 13-Nov-19 09:07 AM https://www.ebay.com/itm/E-GUN-Vacuum-Evaporator-w-gate-valve-and-transformer-chamber-lift-motor-ROTAT/312844511721 13-Nov-19 09:07 AM There's ya an evaporator! 13-Nov-19 09:07 AM Shame it doesn't still have the cryo pump off the back though 16-Nov-19 10:25 AM https://www.ebay.com/itm/MOLECULAR-DEVICES-CLIPR-CHEMILUMINESCENCE-IMAGE-PLATE-READER-SYSTEM-0310-3885/362695799671 16-Nov-19 10:25 AM Stumbled upon this 16-Nov-19 10:25 AM Inside I can tell there is at least one cryocooled, huge area(probably 50x50mm?) CCD camera 16-Nov-19 10:25 AM Amazing value for a cryotiger + spectral instruments camera 16-Nov-19 03:51 PM That's pretty cool! Guess its mostly for organic cell work and such? 16-Nov-19 04:16 PM The device itself is probably useless, but yeah, it's a bio plate reader 17-Nov-19 04:42 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20191117_134031-5C0E1.jpg 17-Nov-19 04:42 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20191117_134049-8636C.jpg 17-Nov-19 04:42 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20191117_134120-DE2C6.jpg 17-Nov-19 04:42 AM weird vacuum flange with BNC welded in, 20 bucks plus shipping from germany 17-Nov-19 04:45 AM heh I have a similarly weird flange, maybe the other side of a similarly weird flange... pretty sure its designed for different type of crush seal... 17-Nov-19 04:45 AM mine appeared to have a silver ring in it? 17-Nov-19 04:47 AM mine had a gold ring 17-Nov-19 04:47 AM I also have the counterpiece, but that's still welded in a chamber here 17-Nov-19 04:47 AM soo... that means you need this flange @Conmega ? 17-Nov-19 04:54 AM hahaha mine is like 14" in diameter 17-Nov-19 04:54 AM its on a massive titanium sublimation pump 17-Nov-19 04:54 AM whoops 17-Nov-19 04:55 AM yeaaa... 17-Nov-19 08:41 AM https://twitter.com/GigaBecquerel/status/1196105905047310336 17-Nov-19 01:47 PM https://twitter.com/cleanroombro/status/1196175979871379456?s=21 18-Nov-19 10:34 PM Perfluorooctane, also known as octadecafluorooctane, is a fluorocarbon liquid—a perfluorinated derivative of the hydrocarbon octane. It can be a good substitute for insulating oil in high voltage electronics. http://www.oakwoodchemical.com/ProductsList.aspx?CategoryID=-2&txtSearch=4638 18-Nov-19 10:34 PM $91 for 100grams, idk if that's good or bad, but it seems maybe OK 18-Nov-19 10:34 PM that quote is from wikipedia 21-Nov-19 12:20 PM https://edispositions.nextlot.com/public/sales/86796/lots 21-Nov-19 12:20 PM Just received notification that this auction is closing now 21-Nov-19 12:20 PM Lots of interesting stuff, RF power supplies, HV supplies, turbopumps. Looks like they're all from the outback sellor on eBay out of Gilroy CA 21-Nov-19 06:53 PM HRM 21-Nov-19 06:53 PM https://hgrinc.com/productDetail/Printing/Used-Rofin-Sinar-Laser-Printer-System-/07190340002/ 21-Nov-19 06:53 PM https://hgrinc.com/productDetail/Printing/Used-Rofin-Sinar-Laser-Printer-System-/07190340004/ 21-Nov-19 06:53 PM https://www.youtube.com/watch?v=oV32RiRDdrE 21-Nov-19 10:47 PM @Conmega that's an older sinar 21-Nov-19 10:47 PM CO2 laser 21-Nov-19 10:47 PM not to mention... yeesh, the age 22-Nov-19 10:42 AM https://hgrinc.com/productDetail/Chemical-Processing/Used-Spire-Flame-Microglame-Generator-/10192340085/ 22-Nov-19 10:42 AM https://www.spirigusa.com/brochures/microflame-technology/download.php?file=SF_DS_eng_page01-18.pdf 22-Nov-19 10:42 AM shiny 23-Nov-19 05:13 PM Is $600 for 20 ft of 10" pipe, 304 grade stainless, a good deal? 23-Nov-19 05:13 PM 3/16" wall 23-Nov-19 05:14 PM Why do you need 20ft of 10"? 23-Nov-19 05:14 PM It's what Craigslist has 23-Nov-19 05:14 PM That seems like a lot 23-Nov-19 05:14 PM Vacuum chamber? 23-Nov-19 05:14 PM Only need like 2ft, unless i want to make and sell the coater 23-Nov-19 05:14 PM Yeah 23-Nov-19 05:15 PM Does it need to be that big? 23-Nov-19 05:15 PM 600$ you can buy a really nice chamber ready to go 23-Nov-19 05:17 PM Yes it needs to be that big 23-Nov-19 05:17 PM Flanging 10" is going to be really expensive 23-Nov-19 05:17 PM That's with rolling up the item in question needing coated 23-Nov-19 05:17 PM Rubber gasket should work i think 23-Nov-19 05:26 PM Is 3/16" thick enough? 23-Nov-19 06:38 PM From what I'm reading, the answer isn't easy to come up with.. 23-Nov-19 06:38 PM Pretty sweet chamber here https://www.ebay.com/itm/Pfeiffer-Balzers-High-Vacuum-Chamber-SCS-800-Jacketed-Stainless-steel/183790302068 23-Nov-19 06:38 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/15745631342406931069626400913251-DB7A6.jpg 23-Nov-19 06:38 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/15745631576554461031340085908025-6FD93.jpg 24-Nov-19 01:45 AM holy yea some old evaporative coating system probably 24-Nov-19 01:45 AM going to need a few hundred dollars in blanking plates haha 24-Nov-19 01:46 AM https://www.ebay.de/itm/264059545507 24-Nov-19 01:46 AM That chamber looks very nice, but you'll have to invest that same amount just for all the blind flanges 24-Nov-19 08:58 AM As far as I think that’s really cheap for 20’ of 10” 304. It’s going to be hard to work with though. You are going to need big tools to work with it! 24-Nov-19 08:58 AM yep 24-Nov-19 01:09 PM Hmm,I was thinking my miter saw would cut through it in two passes 24-Nov-19 09:52 PM Someone placed a bid on my turbo on eBay if it’s some people from here I’ll put extra stuff in the box 25-Nov-19 06:39 AM I built the wood crate myself xD it looks just so way better than cardbox lol nice little traveling box the turbo ! 25-Nov-19 06:39 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-86ACE.jpg 25-Nov-19 07:08 AM cute 25-Nov-19 07:35 AM https://www.ebay.com/itm/CTI-8043074-CryoLine-Pressurized-Stainless-Steel-Hose-260-PSIG/171080610066 https://www.ebay.com/itm/CTI-8081271-P004-CryoLine-Pressurized-Stainless-Steel-Hose-8081271P004/171151382148 https://www.ebay.com/itm/CTI-8081271-P002-CryoLine-Pressurized-Stainless-Steel-Hose-8081271P002/181240366844 https://www.ebay.com/itm/CTI-8043081-G240-CryoLine-Pressurized-Stainless-Steel-Hose-8043081G240/171151381384 https://www.ebay.com/itm/CTI-8043075-G120-CryoLine-Pressurized-Stainless-Steel-Hose-8043075G120-260-PSIG/181240361812 25-Nov-19 07:35 AM Fair deals on cryo lines at the moment 25-Nov-19 07:35 AM 60 bucks shipped is about as cheap as I see them go on ePay for some reason... 25-Nov-19 07:35 AM So fair discounts off their stupid 150 dollar prices 25-Nov-19 10:34 AM $68 shipping on those is ridiculous 25-Nov-19 10:35 AM its 21 for me 25-Nov-19 10:36 AM Huh, I'm across the country relative to you 25-Nov-19 10:36 AM They all say $45.00+ $68.06 Shipping 25-Nov-19 10:37 AM ugh... wow ok totally not worth it then I guess 25-Nov-19 10:37 AM I mean some of them are large and heavy, but others shouldn't be too crazy to ship 25-Nov-19 10:37 AM they must have standardized the box size and just yea 25-Nov-19 10:37 AM large boxes cost a lot 25-Nov-19 10:39 AM Not that I'm into cryo....yet? 25-Nov-19 10:41 AM :P 28-Nov-19 07:26 AM https://www.ebay.com/itm/193216701281 28-Nov-19 07:26 AM cheap high current feedthrough 28-Nov-19 07:26 AM https://www.ebay.com/itm/High-Vacuum-SS-25-pin-cable-pass-through/223756293847 28-Nov-19 07:26 AM reasonable price for a 25 pin passthrough 28-Nov-19 07:26 AM CF4.5" looks like 28-Nov-19 07:26 AM if your in FL 28-Nov-19 07:26 AM https://www.ebay.com/itm/HVA-10-Conflat-vacuum-gate-valve/274097470959? 29-Nov-19 12:42 AM hmm 29-Nov-19 12:44 AM 9 available 1 sold 29-Nov-19 12:44 AM wth 29-Nov-19 01:06 AM That reminds me I have to design the breech loading for samples 29-Nov-19 01:07 AM The what now? 29-Nov-19 01:07 AM @Nixie tell us more in #off-topic-thats-sometimes-on-topic ! 29-Nov-19 01:10 AM DAmn...my Fusion360 died 01-Dec-19 01:05 AM I can't guarantee for anything, but the last time I bought one of those valves from that seller it came with an ISO 100 window, justifying the price https://www.ebay.de/itm/254268225314 01-Dec-19 02:46 PM Greetings, would anyone have any CF275 half nipples they would be willing to sell for less than $30? 01-Dec-19 02:46 PM Hardware (bolts, double nuts) for CF275 would also be of interest 01-Dec-19 02:46 PM If you are interested (or know someone who might be) please email me at guertlerj21@barringtonschools.org 01-Dec-19 02:54 PM Honestly it would probably be easiest to just buy some 2.75" conflat flanges off ePay and cut them if you need them for welding onto other stuff 01-Dec-19 02:54 PM but hardware for conflat is always in need by everyone generally... heh... I ussually just end up buying standard hardware thats the right thread pitch and size... 01-Dec-19 02:54 PM the double nuts are wonderful to have but not necessary 01-Dec-19 02:54 PM but yea you can buy a 3 way CF275 for really cheap and just cut it up, this is not the cheapest example, I have gotten them much cheaper but 01-Dec-19 02:54 PM https://www.ebay.com/itm/Kurt-J-Lesker-T-0275-UHV-ConFlat-Tee-Flange-2-75-OD-5-Length-1-5-Tube/303289869567 01-Dec-19 03:36 PM @@Conmega Thank you, what should I use to cut it? I don't have too much at my disposal. What would be simplest but still practcal? 01-Dec-19 03:37 PM It's regular stainless, pretty thin 01-Dec-19 03:37 PM Hacksaw? 01-Dec-19 03:39 PM Sounds great, thank you! 05-Dec-19 08:18 AM anyone aware of a KF16 to 1/4" SAE adapter? 05-Dec-19 08:28 AM or a cheap source for this piece? 05-Dec-19 08:28 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-E1095.png 05-Dec-19 08:28 AM (the piece is cheap, but the shipping is insane) 05-Dec-19 09:37 AM moin! 05-Dec-19 09:47 AM Don't suppose you have a lathe... you could whip one of those out in around an hour or so... 05-Dec-19 09:47 AM KF stuff is pretty easy 05-Dec-19 11:43 AM Yeah, but the thread gives me headaches. 05-Dec-19 11:43 AM I just prefer to have it already made and fitting. 05-Dec-19 11:48 AM good luck cutting NPT with a lathe 05-Dec-19 11:48 AM you'd need to tilt your entire part 05-Dec-19 11:50 AM I was talking about him wanting the KF16 to 1/4" SAE 05-Dec-19 11:50 AM Cutting NPT is probably best talked about in machining but you can offset your tailstock and turn between centers...usually best to just use a die though. 05-Dec-19 11:52 AM those exist pretty cheap 05-Dec-19 12:14 PM https://twitter.com/GigaBecquerel/status/1202681537961058305 05-Dec-19 12:16 PM Nice project case. If shipping to the US wasn't more than its probably worth I'd probably take it haha. 05-Dec-19 12:16 PM But I also have one or two similar project cases already with only a few holes in them so I am probably fine anyway heh 05-Dec-19 12:17 PM if only I had decided to get rid of this thing a few weeks earlier 05-Dec-19 12:18 PM heh... yea 05-Dec-19 12:29 PM For people in the US - has anyone had US customs reject your declaration and return the package to you? 05-Dec-19 12:46 PM no? 05-Dec-19 12:46 PM what are you sending, guns, drugs? 05-Dec-19 12:46 PM nuclear sources? 05-Dec-19 12:46 PM like I dunno I've never had a problem lmao 05-Dec-19 12:47 PM Trying to ship an x-ray head and not declare it as an x-ray head 05-Dec-19 12:47 PM uhh if you lie about a declaration and they catch you then uh yea you could be in trouble 05-Dec-19 12:47 PM "Vacuum tube" doesn't work? 05-Dec-19 12:48 PM a bit bigger than a "vacuum tube" this one 05-Dec-19 12:48 PM if you want to get around value you can "break it" desolder a part or something and claim it as a "broken X/Y/Z" 05-Dec-19 12:48 PM best not to lie at all on declarations 05-Dec-19 12:48 PM US customs wouldn't have a problem with it, ours would reject it immediately because people shouldn't have literally anything other than basic necessities and electronics 05-Dec-19 12:48 PM you can stretch the truth but lying is a no go 05-Dec-19 12:48 PM that's what I'm trying 05-Dec-19 12:48 PM "Vacuum tube and transformer" 05-Dec-19 12:48 PM technically the truth... 05-Dec-19 12:49 PM @LRM the whole purposely desoldering parts to break it thing is A) devalues it B) makes it less worth being stolen in the supply chain C) reduces cost of customs stuff 05-Dec-19 12:49 PM importing anything into belarus is a massive pain 05-Dec-19 12:49 PM got 4 transistors? well a person shouldn't need more than 3! 05-Dec-19 12:49 PM And also IBM does it so clearly its not actually legally a problem to do it 05-Dec-19 12:49 PM I think his problem is just that they don't want people importing tech not so much the value or theft 05-Dec-19 12:49 PM nope 05-Dec-19 12:49 PM anything "commercial" or "industrial" is simply not allowed 05-Dec-19 12:49 PM you won't believe the lengths I have to go to to import anything more complex than a soldering iron 05-Dec-19 12:50 PM then label it "babies first home xray head" 05-Dec-19 12:50 PM :P 05-Dec-19 12:50 PM it says HOME on it not industrial! 05-Dec-19 12:50 PM and hey your not lieing if your using it at home, honestly its useless descriptors 05-Dec-19 12:50 PM but yea I dunno that's kinda a shitty situation 05-Dec-19 12:51 PM My vote is for "vacuum tube and transformer" because it is accurate and likely to get a customs worker thinking it is audio gear 05-Dec-19 12:51 PM yeah something like that I suppose 05-Dec-19 12:51 PM but you also seem to have already gotten your hands on much more interesting stuff INSIDE your own country... 05-Dec-19 12:51 PM not really :( 05-Dec-19 12:51 PM all the really cool stuff I import 05-Dec-19 12:52 PM you still get your hands on way too much impressive stuff 05-Dec-19 12:52 PM I buy or get all of it overseas 05-Dec-19 12:53 PM I have only heard stories of the stuff you have had your hands on through others that know you through EEVBlog/TGG (before it imploded)/etc 05-Dec-19 12:53 PM Still if your worried about an xray head and already got cooler stuff you should know the ways around it 05-Dec-19 12:53 PM and yea tube and transformer is perfectly fine description 05-Dec-19 12:53 PM and is vague enough it'll probably be fine 05-Dec-19 12:53 PM "Broken vacuum tube assembly containing two transformers" 05-Dec-19 12:53 PM that oughta do it 05-Dec-19 12:53 PM well if it is broken or unknown yea sure 05-Dec-19 12:54 PM that's gonna be a fun one to explain to our customs 05-Dec-19 12:54 PM but at least ours are stupid 05-Dec-19 12:54 PM speaking of which after this work meeting I have to call a craigslist guy, old dental xray near me complete with wall mount arm and everything for 150 bucks... 05-Dec-19 12:54 PM older unit too I think its 70kv 15ma 05-Dec-19 12:54 PM but not 100% sure 05-Dec-19 12:54 PM 15mA is a lot 05-Dec-19 12:55 PM yea most older units seem to stop at 10ma, but yea its a much older GE unit 05-Dec-19 12:55 PM at-least photos of similar control units/boxes I see ratings and labels up to 15mA 05-Dec-19 12:55 PM it may not go up to that but yea 05-Dec-19 12:55 PM either way I'll find out if its still available and nab it this afternoon if I can 05-Dec-19 12:55 PM Either way I dunno what I'll do with it yet besides maybe eventually get a digital sensor and make a little system to image stuff, but it'll be a side project thing 05-Dec-19 12:55 PM Also get some larger bits of lead to make a box around that system if and when I build it just to be safe 05-Dec-19 12:55 PM Although I'd much rather shorten my life with xrays than say smoking cigarettes... 05-Dec-19 12:55 PM but the price and distance is right 05-Dec-19 12:55 PM and its orange <3 06-Dec-19 03:01 PM Maybe a good deal? 06-Dec-19 03:01 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20191206_145941-65005.jpg 06-Dec-19 03:02 PM quite a chunky power supply 06-Dec-19 03:02 PM oh lol, i just got such a unit 06-Dec-19 03:02 PM get it! 06-Dec-19 03:02 PM kikusui has all the manuals including this one on their website 06-Dec-19 03:02 PM What'd ya pay? 06-Dec-19 03:03 PM "here, take this, it's in my way" 06-Dec-19 03:03 PM Lol 06-Dec-19 03:03 PM Better thab $50 06-Dec-19 03:03 PM yes, but 50 would still be a very nice price 06-Dec-19 03:03 PM it's a very sturdily built device 06-Dec-19 03:03 PM oh, that rhymes - how nice! 06-Dec-19 03:05 PM Looking to sell my Rigol Ds2072. Fully unlocked of course (300mhz, serial decode, etc). Tell your friends! 06-Dec-19 03:05 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-B84DF.jpg 06-Dec-19 03:05 PM I think the lefthand thing is a variable capacitor?? The right thing has an inner part that spins, very insulated looking 06-Dec-19 03:05 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20191206_150411-75C06.jpg 06-Dec-19 03:19 PM yes, left one is a high voltage trim capacitor, probably for antenna coupling stuff 06-Dec-19 03:19 PM right one looke like the mechanics of the inductive counterpart, but without the coils 07-Dec-19 03:09 PM https://www.ebay.com/itm/293341988157 08-Dec-19 05:03 PM Could anything interesting be done with this? https://www.eevblog.com/forum/buysellwanted/(fs-world)-partial-vacuum-chamber-cryocooler/ 08-Dec-19 05:05 PM I wouldn't, the orings are weird 08-Dec-19 05:05 PM But Mark is trustworthy, I've gotten stuff from him before 08-Dec-19 10:27 PM ohh, very cool 08-Dec-19 10:27 PM cryocooler, pirani and a sub-D (lots) feedthrough 08-Dec-19 10:27 PM lots of good stuff 09-Dec-19 11:39 PM 3kW e-beam welder https://www.ebay.com/itm/Leybold-Heraeus-Electron-Beam-Welder-60-Kv-PTR-Technologies/202057805340 09-Dec-19 11:39 PM $7500 09-Dec-19 11:43 PM looks quite dead 09-Dec-19 11:44 PM looks better than some SEMs I've seen 09-Dec-19 11:57 PM that looks like about $500 in maaaaaybe usable parts and $100 in scrap metal 09-Dec-19 11:57 PM would be a fun project if the seller was willing to deal and you are local 10-Dec-19 12:09 AM the vacuum chamber though, lots of HNNNG 10-Dec-19 12:21 AM just hope you have a leak detector and very deep pockets 10-Dec-19 12:22 AM enough helium and an RGA 10-Dec-19 12:22 AM looked a little for a manual and im not seeing anything online which is too bad because those older machines often have some pretty simple designs to them 10-Dec-19 12:22 AM but it looks almost entirely KF 10-Dec-19 12:22 AM 60kV at over 100mA though 10-Dec-19 12:22 AM that's a LOT of x-rays, and very toasty ones for that thin of a glass window 10-Dec-19 12:22 AM definitely enough to cause serious damage, overkill even for cancer initiation 10-Dec-19 12:22 AM a couple minutes of welding while staring through that window and you've given yourself a nice CT scan's worth of angry photons 10-Dec-19 12:24 AM I thought it said 50mA 10-Dec-19 12:24 AM 125mA 10-Dec-19 12:24 AM 60kV @ 125mA 10-Dec-19 12:24 AM if used for the intended purpose I would prefer to be as far away from the thing as possible 10-Dec-19 12:24 AM wonder if that's why it got scrapped 10-Dec-19 12:26 AM hrmm, I must've gotten my numbers mixed up when I posted, was looking at some e-beam service providers and then searched ebay 10-Dec-19 12:26 AM even 50mA is huge 10-Dec-19 12:26 AM for the record: dental x-ray heads run at around 65-75kV @ 1-8mA 10-Dec-19 12:26 AM and those are pulsed(<1s) 10-Dec-19 12:27 AM oh hey, local pickup just an hour or so from me 10-Dec-19 12:28 AM @qualia do it! 10-Dec-19 12:31 AM i already pay hundreds a month in power bills, a 48kW 3-phase feed into my bedroom should be a drop in the bucket.. 10-Dec-19 12:32 AM see 13-Dec-19 08:33 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20191213_172529-37F85.jpg 13-Dec-19 08:33 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20191213_172650-271F6.jpg 13-Dec-19 08:33 AM selling two resistance decades, asking for 20 bucks a pop + shipping 13-Dec-19 02:11 PM Any accuracy specs? 13-Dec-19 02:12 PM none 13-Dec-19 02:12 PM 0% would be nice 13-Dec-19 11:32 PM Okay, so I have this 13-Dec-19 11:32 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/ptz35ms-37EF7.png 13-Dec-19 11:32 PM a FLIR PTZ-35-MS 13-Dec-19 11:32 PM Good, working condition, 320x240 30Hz FLIR thermal core inside, 35mm telephoto lens 13-Dec-19 11:32 PM Given the laser opportunity in #off-topic-thats-sometimes-on-topic... does anyone want one? 13-Dec-19 11:32 PM I will ship anywhere, as long as you're not planning to sell this to North Korea or Iran or something. 13-Dec-19 11:32 PM Datasheet here 13-Dec-19 11:32 PM https://cdn.thomasnet.com/ccp/10013950/94718.pdf 13-Dec-19 11:38 PM Well, let me join the selling to buy laser club by offering my Edwards EXT 255HI compound turbopump for sale too. 13-Dec-19 11:45 PM How much for the turbo? That's a 24v one with integrated controller? 13-Dec-19 11:47 PM Controller is the EXDC80, $67 from eBay. Asking $350 13-Dec-19 11:47 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/JPEG_20191214_025017-AAA47.jpg 14-Dec-19 01:40 AM hmm, I'm reading that is a turbo drag... so does that mean it's not quite as resilient to being exposed to atmosphere as a full-drag? 14-Dec-19 03:53 AM @Deleted User Where are you based... and how did you get that? O.o 14-Dec-19 04:09 AM probably some illeagle deal with terrorists. 14-Dec-19 09:19 AM @nmz787 Yes, it has a conventional turbo stage followed by a holweck drag stage to increase tolerable foreline pressure and give you higher compression ratio. This will not survive being exposed to atmosphere at full speed 14-Dec-19 09:20 AM Looking to downsize my 2-axis linear motor stage. If anyone has a small stage they'd like to swap for a gigantic one, let me know. It has 300mm travel. https://www.aerotechgmbh.de/media/441440/als3600.pdf 14-Dec-19 09:57 AM I can trade my two linear steppers for this unit @piGuy 14-Dec-19 09:57 AM If you want a massive downgrade and are willing to pay for shipping :D 14-Dec-19 09:59 AM Hah 14-Dec-19 10:00 AM What would that unit even be used for? 14-Dec-19 10:00 AM Huge hollow cutout, super heavy 14-Dec-19 10:06 AM I'm guessing some sort of solar cell processing 14-Dec-19 10:06 AM "This dual-axis, large aperture, open-frame stage addresses the unique needs of scanning microscopy, wafer and printed circuit board inspection and automated assembly." 14-Dec-19 10:07 AM Oh yeah this would totally fit in an AOI system 14-Dec-19 10:08 AM I had a linear motor phase (no pun intended) during which I bought all kinds of aerotech linear motors and stages 14-Dec-19 10:08 AM I had one too, where I bought exactly two linear steppers 14-Dec-19 10:08 AM Because that was the only thing on the entirety of ebay 14-Dec-19 10:08 AM But now they're selling all kinds of linear servos too 14-Dec-19 10:10 AM For anyone else interested, I'd really like some sort of small precision stage for positioning 2" wafers. 14-Dec-19 10:11 AM If you don't need it fast, just buy a regular ballscrew stage 14-Dec-19 10:11 AM If you need it in vacuum, just drain it of all grease and keep it very dry 14-Dec-19 10:14 AM I don't NEED it fast, but I WANT it fast 14-Dec-19 10:14 AM stick servos onto it! :P 14-Dec-19 01:41 PM Oh, I also have an ISO100 vibration dampener for sale to go with the turbopump if needed 14-Dec-19 06:05 PM To answer the question re: thermal camera 14-Dec-19 06:05 PM I bought it marked as non-working scrap(the usual), but it turned out to be in pretty much perfect condition, the thermal lens is like new. I'm in Belarus and the price is... make an offer and we'll figure something out. 14-Dec-19 10:29 PM Another offer 14-Dec-19 10:29 PM I've got a pair of these LG-56 HeNes 14-Dec-19 10:29 PM https://spirit.re/vacuum_tubes/lg56_top.jpg 14-Dec-19 10:29 PM https://spirit.re/vacuum_tubes/lg56_left.jpg 14-Dec-19 10:29 PM Okay-ish condition, brewster output 14-Dec-19 10:29 PM https://spirit.re/vacuum_tubes/lg56_mirror.jpg 14-Dec-19 10:29 PM No brains, no PSU, no specs. Possibly gassy, but filament fired up okay a few years ago 14-Dec-19 10:29 PM A nice rare soviet piece, price is up to offers 14-Dec-19 10:29 PM The big coil is only present in one of them, the one with the housing(not pictured). Made for starting, I'm guessing. 14-Dec-19 10:33 PM I've got a very large and heavy He-Ne exciter from RCA lying around, not sure if it works though 15-Dec-19 11:19 PM https://www.ebay.com/ulk/itm/231521531581 7T superconducting solenoid in an indeterminate state.. anyone near ohio? :D 15-Dec-19 11:22 PM no shipping to germany :( 15-Dec-19 11:24 PM production year 2005 16-Dec-19 12:03 AM Probably needs a LHe fill and even then it might still be junk. 16-Dec-19 12:04 AM it's sitting 16-Dec-19 12:04 AM so it's probably vented 16-Dec-19 12:12 AM For $550 its a nice price. Probably get $100 in scrap if it's completely dead and hopeless. 17-Dec-19 10:51 AM https://www.amazon.com/HiLetgo-Level-Converter-Board-Rs232/dp/B00LUDCAXQ/ 17-Dec-19 10:51 AM $0.5 each for ttl to rs232, works for MKS 901P according to fusor.net discussion 17-Dec-19 03:52 PM I have some of those. 17-Dec-19 03:52 PM Not that many ways one can screw up a MAX232 18-Dec-19 11:58 AM https://www.ebay.com/itm/DANAHER-2-AXIS-SLIDING-STAGE-MOTION-LINEAR-MOTOR-CNC-3D-PRINT-ARDUINO-RASPBERRY/371365621293?hash=item56771dae2d%3Ag%3A35EAAOSwB5pdYKoa&LH_ItemCondition=4 18-Dec-19 11:58 AM someone might like this... 18-Dec-19 11:58 AM looks like a vacuum positioning stage 18-Dec-19 11:58 AM https://www.ebay.com/itm/DOVER-AIR-BEARING-GANTRY-STAGE-22-X-26-X-5-TRAVEL-DMM-2150-4-AXIS-DRIVER/323914690747?hash=item4b6ad1f0bb%3Ag%3Ah1wAAOSwI5FddJA9&LH_ItemCondition=4 18-Dec-19 11:58 AM WOAH 18-Dec-19 11:58 AM o daym 18-Dec-19 11:58 AM that's a nice price 18-Dec-19 11:58 AM for a fricking granite gantry :V 18-Dec-19 01:16 PM wow 18-Dec-19 01:16 PM both of those are cool and pretty cool prices 18-Dec-19 02:07 PM ya 18-Dec-19 10:42 PM Heidenhain are good stuff 18-Dec-19 10:42 PM Sometimes weird interfaces like 0-11uA sine resolvers though 20-Dec-19 12:17 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20191219_151012-F5A3D.jpg 20-Dec-19 12:17 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20191219_151008-1F370.jpg 20-Dec-19 12:17 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20191219_151002-49960.jpg 20-Dec-19 12:17 PM These pictures are from eBay user davidstarik (https://www.ebay.com/usr/davidstarik). I told him I would post these to the chat and get anyone in contact with him that spots something they might want. He's selling them all for very favorable prices. 20-Dec-19 12:20 PM Oh gawd 20-Dec-19 12:21 PM lol 20-Dec-19 12:21 PM That conflat chamber looks interesting 20-Dec-19 12:21 PM yea I almost picked that up, it's actually two 6-way's together 20-Dec-19 12:21 PM and that... mother of all feedthroughs 20-Dec-19 12:21 PM lol 20-Dec-19 12:21 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-8A46C.png 20-Dec-19 12:21 PM Yeah, I kinda want that 20-Dec-19 12:21 PM ohhh 20-Dec-19 12:22 PM I think that one is listed currently on his eBay 20-Dec-19 12:22 PM it says tuning 20-Dec-19 12:22 PM Too bad me and @Mason_Yu just spent an incredible amount of money on not vacuum gear 20-Dec-19 12:22 PM lol 20-Dec-19 12:22 PM does it mean it's not a source but just an adjuster? 20-Dec-19 12:22 PM Yep... 20-Dec-19 12:22 PM It's probably for adjusting the VSWR when connected to a chamber 20-Dec-19 12:22 PM Since an RF power source needs tuning 20-Dec-19 12:22 PM Otherwise the reflected power will overheat it 20-Dec-19 12:22 PM and/or do other funny stuff 20-Dec-19 12:22 PM RF gen -> tuner -> chamber/application 20-Dec-19 12:24 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-B5DC2.png 20-Dec-19 12:24 PM I wonder if those are wafers 20-Dec-19 12:25 PM @Metanoic Did you figure out the original purpose of your chamber? 20-Dec-19 12:25 PM I believe he was using it for measuring field emission of samples he made in another chamber 20-Dec-19 12:25 PM I will post pics of the motion control setup in the chamber that should illuminate its purpose 20-Dec-19 12:26 PM Was he making his own avalance photodiodes? 20-Dec-19 12:26 PM yea, stuff like that. InGaAs detectors and the likes I think 20-Dec-19 12:26 PM he has published a bit, his name is David Starikov if you want to google scholar him. Seems to mostly have concentrated on sensing applications. 20-Dec-19 12:26 PM he also has what looked like a full/complete MBE setup if someone wants to solicit him on that and various gates and whatnot, but those were at the research lab and I wasn't taking pictures there 21-Dec-19 01:28 AM I need an MBE to do GaAs film deposition at work... kind of scary though, apparently a small AsH3 cylinder will IDLH a city block if it’s breached. 21-Dec-19 01:28 AM It’s like an antenna tuning unit, used to impedance match the “transmitter” to the “antenna” and optimise the SWR. 21-Dec-19 01:28 AM There’s a calibrated helium leak cylinder hiding in that photo! 21-Dec-19 02:14 AM yeah I guess @Mason_Yu snagged that matcher... it's gone from ebay now and it apparently was the cheapest one on there! 21-Dec-19 06:32 AM No, I didn't! 21-Dec-19 09:56 AM I did... because I've been hunting for one for awhile and I saw Nixie want it originally but then mis-understand that it wasn't a generator just a matching network... 21-Dec-19 09:56 AM I saw no further discussion or want, but if you need it and were going to buy it I can arrange to get it to you... I kinda bought then asked questions later... I don't know if I can even find specs on this thing or any kind of documentation 21-Dec-19 09:56 AM looks like the company got bought up then deleted... great... 21-Dec-19 09:56 AM So yea sorry, didn't mean to step on your feet, if you need it we can arrange that. 21-Dec-19 10:03 AM No, it's completely fine. I was more interested in the electron gun and the 2.75" CF cross/chamber, but both were sold on eBay two nights ago 21-Dec-19 10:03 AM I don't need it, nor do I have the money to just spend on interesting stuff right now 21-Dec-19 10:19 AM I meant nmz787 since he seemed to imply he was looking for it on eBay. 21-Dec-19 12:07 PM If it's anything like antenna tuning units, it's gona be relatively simple on the inside. 21-Dec-19 12:07 PM Biggest question is if the caps inside are going to be air variable or vacuum variable 21-Dec-19 12:07 PM and if the inductor is a roller one or stepped with switches. 21-Dec-19 12:36 PM so the big thing is what frequency its designed to work with... 21-Dec-19 12:36 PM generally they are designed to work with a certain frequency range and tune to that, same with tuning on say a large AM transmitter... which I had one at one point... variable capacitors and inductors and things 21-Dec-19 12:36 PM but tuning an antenna for a transmitter vs tuning a weird vacuum chamber.... thing... 21-Dec-19 12:39 PM Same thing really 21-Dec-19 12:39 PM Just a different SWR 21-Dec-19 12:40 PM but yea my plasma gen I'm getting from @GigaSquirrel is like 100-300Khz or something like that where as most plasma gens use the industrial 13.56Mhz frequency 21-Dec-19 12:40 PM so the tuner I am getting from this guy in texas may not work for me if its for 13.56Mhz 21-Dec-19 12:50 PM It might still work, just have less tuning range 21-Dec-19 02:04 PM @Conmega thanks, I'll let you know after I (hopefully) hear back from the company that acquired the company that built the genrator I just got. I was told some generators have matching networks inside. 22-Dec-19 01:39 AM Hey anyone would have a ruby laser ? I need to replace my hene laser with a more powerful and pulsed one for improving my results. Also considering building one myself but I’ll need a xenon flash lamp and a ruby rod xD 22-Dec-19 01:39 AM Have this little monster for trade ^^ 22-Dec-19 01:39 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-D6A70.jpg 22-Dec-19 01:55 AM I do have some ruby rods, but it is quite challenging to have ruby laser operating reliably in the long term. One linear xenon flash lamp might not be enough, and most of the cost will go to enormous capacitor banks. If operation in red is not mandatory, you really need to go for Nd:YAG. It is much more robust and cheaper to build/maintain. 22-Dec-19 02:18 AM I have like 80meters of holographic film roll which is sensitized for deep red, due to cost of holographic material, I intended to make good usage of this abundant source of material, working with green light could be fun too but I’d need to buy some new holographic plates which costs like hell. Nd:YAG is a rod too ? Similar system as for ruby pulsed laser ? 22-Dec-19 09:55 AM https://www.ebay.com/itm/MDC-Vacuum-P-N-450006-Ref-No-VP-400-6-ConFlat-Flange-Viewport/264574612148 22-Dec-19 09:55 AM <3 22-Dec-19 09:55 AM https://www.ebay.com/itm/MDC-surface-science-UHV-vacuum-chamber-based-on-10-conflat-1-4-20-newport-table/254446583507 22-Dec-19 09:55 AM https://www.ebay.com/itm/C164056-Alcatel-Type-2040-Turbo-Vacuum-Pump-2-75-x-4-5-CF-Conflat-Flange-Tee/293351086687 22-Dec-19 09:55 AM weird little turbo 22-Dec-19 10:17 AM I want a cryo pump like this 22-Dec-19 10:17 AM https://www.ebay.com/itm/CTI-400-CRYO-PUMP/163984561899 22-Dec-19 10:17 AM Cryobucket. 22-Dec-19 10:21 AM hehe 22-Dec-19 11:34 AM So uh 22-Dec-19 11:34 AM I found a ruby laser 22-Dec-19 11:34 AM @Black Lemming 22-Dec-19 11:34 AM https://www.avito.ru/rostov-na-donu/kollektsionirovanie/gos-1001_1417801593 22-Dec-19 11:34 AM Ignore the russian site... just... LOOK AT THE SIZE 22-Dec-19 11:34 AM holy hsit 22-Dec-19 11:56 AM I found more pictures of it online 22-Dec-19 11:56 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/dscn9340_224-5D83C.png 22-Dec-19 11:56 AM http://lasers.org.ru/forum/threads/%D0%94%D0%BE%D0%BC%D0%B0%D1%88%D0%BD%D1%8F%D1%8F-%D0%B7%D0%B2%D0%B5%D0%B7%D0%B4%D0%B0-%D1%81%D0%BC%D0%B5%D1%80%D1%82%D0%B8-%D0%B7%D0%B0%D0%BF%D1%83%D1%81%D0%BA-%D0%93%D0%9E%D0%A11001.7175/ 22-Dec-19 11:56 AM I love the tiny shower of sparks that almost fills the room when it fires 22-Dec-19 11:56 AM and, y'know, this 22-Dec-19 11:56 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/OmMh0eS0GsQ-3138F.png 22-Dec-19 11:56 AM looks like it's a 20kJ laser 22-Dec-19 11:59 AM Full pump energy is 25 kJ in the forum post 22-Dec-19 11:59 AM 450J pulse, 25kJ pump 22-Dec-19 11:59 AM But he says that in the original system, the pump energy was 60kJ, with 48 caps 22-Dec-19 11:59 AM I'm somewhat tempted to ask that seller about buying it 22-Dec-19 11:59 AM but he wants $400 for it 22-Dec-19 12:01 PM Quite afforadable, considering the scale, caps for the flashlamp should be easily available over there right? 22-Dec-19 12:01 PM that is ridiculously cheap 22-Dec-19 12:01 PM could resell the ruby rod for 3x that minimum... 22-Dec-19 12:02 PM It's not so much the availability of the caps that is the issue 22-Dec-19 12:02 PM it's also not ruby, Nd:Glass 22-Dec-19 12:02 PM ahh 22-Dec-19 12:02 PM @ZeptoBars seems to have a Nd:Glass rod from its smaller brother, GOS-301 22-Dec-19 12:02 PM There's also a few sellers offering Nd:Glass and Nd:YAG rods 22-Dec-19 12:02 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/5210206064-48F36.png 22-Dec-19 12:02 PM This is Nd:Glass 22-Dec-19 12:02 PM a nice and compact 45x740mm lol 22-Dec-19 12:06 PM Are you concerned about the power supply then? 22-Dec-19 12:06 PM and the sheer number/cost of caps to drive these 22-Dec-19 12:06 PM well, that, and it's not particularly useful as a laser 22-Dec-19 12:06 PM just as something to own and show for fun 22-Dec-19 12:08 PM The Kaiser systems LS1500 cap charging power supplies are quite good 22-Dec-19 12:08 PM There used to be some sources selling them for under $200 at 35 kV fully adjustable charging voltage 22-Dec-19 12:09 PM We've already dumped our money into a laser that hasn't showed up yet 22-Dec-19 12:09 PM Well down to 100V actually 22-Dec-19 12:09 PM I know 22-Dec-19 12:09 PM But if anyone else wants help in buying this kind of insanity from Russia, I can help 22-Dec-19 12:14 PM Originally this thing can produce up to 1 kJ of laser pulse energy at up to 1.5 ms pulse length 22-Dec-19 12:16 PM For when the item you're trying to process happens to be behind a concrete wall 22-Dec-19 12:33 PM Well, what I did is ordered 3*45mm Ruby rod there. That would be really cute ruby laser ) 22-Dec-19 12:34 PM There was a seller offering dozens of huge ruby rods just... from a barrel 22-Dec-19 12:34 PM But I guess the listing i gone now 22-Dec-19 12:35 PM There are still lots of Ruby left in Russia... It is scary... 30 years passed, and there is still lots of it: 22-Dec-19 12:35 PM https://www.avito.ru/sankt-peterburg/kollektsionirovanie/sinteticheskiy_rubin_sterzhen_rezonator_dlya_lazera_1701359003?slocation=621540 22-Dec-19 12:35 PM The soviet union took the discovery of lasers seriously 22-Dec-19 12:35 PM Way too seriously 22-Dec-19 12:37 PM Lol, it is getting more temping, found 45*740mm rod... 22-Dec-19 12:37 PM Yup lol 22-Dec-19 12:37 PM Pumping that would require terrifying amounts of energy 22-Dec-19 12:37 PM and terrifyingly expensive flashlamps :P 22-Dec-19 12:38 PM Chinese are making relatively cheap flash lamps, and even offer custom ones for orders >10pcs... 22-Dec-19 12:38 PM Yep 22-Dec-19 12:38 PM 170mm ones are only $20 22-Dec-19 12:38 PM But longer ones I'll have to look 22-Dec-19 12:38 PM 750mm ones would be... a little more than $20 22-Dec-19 12:38 PM :P 22-Dec-19 12:38 PM especially ones that can survive the pumping energy 22-Dec-19 12:38 PM so rated at ~300-3000% of the pump power 22-Dec-19 12:38 PM depending on how long you want it to last 22-Dec-19 12:42 PM And once you have 1 working, put second for MOPA configuration... 22-Dec-19 12:42 PM MOPA is more fun when you have a picosecond seed 22-Dec-19 12:45 PM I got a lovely Ruby rod laying about here 22-Dec-19 01:36 PM Holy sh**** 22-Dec-19 11:43 PM https://tenor.com/view/chris-tucker-hello-im-here-welcome-fifth-element-gif-12583144 22-Dec-19 11:43 PM The best Ruby Rod. 25-Dec-19 10:43 AM https://www.ebay.com/itm/C164721-ISO-160-Vacuum-Chamber-NW160-Flange-Tee-w-MHV-Electrical-Feedthrough/333443292761 25-Dec-19 10:43 AM https://www.ebay.com/itm/MDC-6-Way-Reducing-Cross-Vacuum-Chamber/174134331940 25-Dec-19 10:43 AM https://www.ebay.com/itm/MDC-6-Way-Cross-Vacuum-Chamber-6-x-4-5-Conflat-Flanges/174134328019 25-Dec-19 10:49 AM ohhh that ISO160 T has some very interesting ports! 25-Dec-19 11:24 AM Yea, and nice passthroughts 25-Dec-19 11:24 AM its ending soon though 25-Dec-19 11:24 AM I just nabbed me something for myself for christmas 30-Dec-19 11:55 AM https://hgrinc.com/productDetail/Not-Specified-Yet/Used-Alcatel-Vacuum-Pump/12191790062 30-Dec-19 11:55 AM Ohh this is tempting 30-Dec-19 11:55 AM though it looks a bit rough 30-Dec-19 12:28 PM https://hgrinc.com/productDetail/Inspection/Used-Amray-Scanning-Electron-Microscope-/12190020035/ 30-Dec-19 12:28 PM Woah, if anyone's near Ohio and can accomodate this thing this is a great SEM deal 30-Dec-19 12:28 PM Reasonable condition with both EDX and WDX it seems 30-Dec-19 12:29 PM I don't think it's complete 30-Dec-19 12:29 PM Also it looks a bit rough 30-Dec-19 12:29 PM What is it missing? 30-Dec-19 12:30 PM Electron Gun looks wrong 30-Dec-19 12:30 PM Yeah I don't see the actual gun anywhere 30-Dec-19 12:32 PM yea... like I saw that but made no mention of it here because it looks like a bucket of parts 30-Dec-19 12:32 PM Or the high voltage cable 30-Dec-19 12:32 PM It looks like it's been parted out some 30-Dec-19 12:32 PM Missing a few boards as well 30-Dec-19 12:32 PM yea avoid unless you want weird parts 30-Dec-19 12:32 PM Or the ion pump 30-Dec-19 12:32 PM Or rotary pump 30-Dec-19 12:33 PM there are some ok looking helium compressors, some good looking cryo heads, and a few turbos floating around there 30-Dec-19 12:33 PM most of the helium compressors have pressure still, but may need filters.. 30-Dec-19 12:33 PM look like higher hours 30-Dec-19 12:33 PM cryo heads all look pretty clean, capped, etc 30-Dec-19 12:33 PM You can get a cryohead and a compressor for $500 30-Dec-19 12:33 PM right now at HGR yes 30-Dec-19 12:33 PM most of the compressors are larger ones that are 3 phase though 30-Dec-19 12:33 PM like one maybe two are single phase 30-Dec-19 12:33 PM cryo is great though 30-Dec-19 12:33 PM I honestly might sell my turbos and go just completely cryo other than the odd turbo for like a leak checker or something where gas load may be constant 30-Dec-19 12:33 PM because like... while yes compressor needs service ever now and again, the absorbers are like 500 bucks and your good for another like 30k hours at-least lol 30-Dec-19 12:33 PM and depending on the cold head type you get those rarely need rebuild 30-Dec-19 12:33 PM some of the older designs have weird... oil resevours and such 30-Dec-19 12:33 PM but now I think they are all just direct drive electrical motors and such 30-Dec-19 12:33 PM very few weird moving parts other than the graphite valve that turns or something like that 30-Dec-19 01:21 PM https://www.ebay.com/itm/Flex-head-3-inch-magnetron-sputtering-sources-pair-of-2/114012193502 30-Dec-19 02:11 PM Those are cute 30-Dec-19 06:23 PM <__ice9#6039> Is there any benefit to using both a turbopump and a cryopump in the same chamber? 30-Dec-19 07:23 PM Different gases get pumped at different speeds, stuff like He and H can't be pumped by a cryopump 30-Dec-19 09:23 PM Yeah it's a pretty common combo. Often use the turbo to prepump the chamber to high vacuum then switch to cryo. You usually use them for high gas loads at high vacuum. Especially common for space applications 31-Dec-19 10:40 AM https://www.ebay.com/itm/LEYBOLD-RGD-210-ULTRA-HIGH-VACUUM-CRYOGENIC-CRYO-PUMP-10-KELVIN-RPK-500/293360322186 31-Dec-19 10:40 AM teeny weeny cryopump machiney 31-Dec-19 10:48 AM also found this https://www.ebay.com/itm/Pfeiffer-TMH-260-Turbo-Vacuum-Molecular-Pump-w-Pfeiffer-TCP-121-Controller/202866458070? 31-Dec-19 10:48 AM too expensive to ship, but a good deal if you can score it cheap 31-Dec-19 02:12 PM @Deleted User I have two of those little cryo heads, one conflat 6" like that and one ISO 100 31-Dec-19 02:12 PM I have not tried running them yet though so no idea how well they work especially with how old they are 31-Dec-19 02:12 PM though I just need to hook up some hoses and flip a switch and I can test them 31-Dec-19 02:12 PM that turbo looks pretty filthy inside though 31-Dec-19 02:12 PM looks like someone had it right off a sputtering/evap system of some type and yea 31-Dec-19 02:12 PM why... 31-Dec-19 02:14 PM yeah it looks like a titanium or some other evap system has been run directly over it 31-Dec-19 02:14 PM I see a lot of turbos like this 31-Dec-19 02:14 PM he has another clean one 31-Dec-19 02:14 PM https://www.ebay.com/itm/Pfeiffer-TPH-240-Turbo-Vacuum-Molecular-Pump-w-Pfeiffer-TCP-121-Controller/202866461083 31-Dec-19 02:15 PM I don't... ussually you put some baffle in front to keep that from happening or put it around a bend 31-Dec-19 02:15 PM you don't need to 31-Dec-19 02:16 PM uhm, the deposited metal is not really a good idea for something spinning like that and deposited material can cause A) contamination of other processes B) outgassing issues depending on what's left behind and how often the chamber is opened to atmosphere C) cleaning a chamber is one thing, cleaning a turbo lol no 31-Dec-19 02:16 PM like I dunno, I rarely see contamination like that on turbos 31-Dec-19 02:16 PM you can easily clean most turbos by giving them an upside down bath in %aggressive fluid% 31-Dec-19 02:16 PM just make sure you don't bathe the motor and bearings 31-Dec-19 02:17 PM I more often see dust and dirt from sitting on a shelf uncovered 31-Dec-19 02:17 PM hides turbo 31-Dec-19 02:17 PM yea I dunno I've just been told don't pour liquids down in a turbo period kinda 31-Dec-19 02:17 PM like you MIGHT be ok 31-Dec-19 02:17 PM but also probably not worth the risk 31-Dec-19 02:18 PM depends on which turbo 31-Dec-19 02:18 PM if it's an external sealed motor turbo, the inner part can be soaked 31-Dec-19 02:18 PM honestly the ones I got that sat in a dirty warehouse for years probably and just collected dust and dirt I tried cleaning with kimwipes and alcohol and just carefully getting in the best I could 31-Dec-19 02:18 PM yea I am not sure I could quite find info on these but I'll have to try and look again then 31-Dec-19 02:19 PM https://www.youtube.com/watch?v=n87i81o4blU 31-Dec-19 02:19 PM swish swirl 31-Dec-19 02:19 PM oh god 31-Dec-19 02:19 PM lol 31-Dec-19 02:20 PM it's a TMU pump 31-Dec-19 02:20 PM no harm done 31-Dec-19 02:20 PM (except to that poor thermocouple sensor, that monster) 31-Dec-19 02:21 PM yea the ones I have are Alcatel 31-Dec-19 02:21 PM TMU are magnetic suspension bearings 31-Dec-19 02:21 PM and I believe ceramic safety bearing 31-Dec-19 02:21 PM this is how you'd clean a pump with greased bearings https://www.youtube.com/watch?v=dR5USyv1bSo 31-Dec-19 02:21 PM (very gently) 31-Dec-19 02:25 PM https://www.ebay.com/itm/Alcatel-PTM-5150-Turbo-Pump-CFF-450-Turbo-Controller/254467936028 31-Dec-19 02:25 PM Maybe worth making an offer on if you need a larger turbo 31-Dec-19 02:27 PM cerΔmic 31-Dec-19 02:27 PM looks like the seller also has an affordable dry scroll 31-Dec-19 02:27 PM https://www.ebay.com/itm/BOC-Edwards-XDS10C-Dry-Scroll-Pump/254209792848 31-Dec-19 04:53 PM $458 shipping, lol. Is it gonna be escorted by a 6 man security team on the back of a clydesdale?? 31-Dec-19 04:53 PM Well it's coming from Singapore 31-Dec-19 04:54 PM Can get granite surface plates 5 times the weight from Singapore for like $80 shipping though 31-Dec-19 04:54 PM We got something similar from ebay once, the tips seals were new but it still couldn't pull vacuum, so these things can definitely wear down to the point of not being refurbishable 31-Dec-19 04:54 PM So untested and $1k is a BIG gamble IMO 31-Dec-19 04:55 PM Yea good point 31-Dec-19 04:55 PM I don't think the shipping cost is real 31-Dec-19 04:55 PM Likely autocalculated 31-Dec-19 04:56 PM Speaking of which. On a scale of 1 to 10 how full of poo are all these "was working when pulled. No power cable so couldn't test" listings. I say 11. 31-Dec-19 04:56 PM $450 sounds about right to me for a 25 kg package from Singapore to the US with well-known carriers by air 31-Dec-19 04:57 PM 50% "awesome condition", 50% "damaged beyond repair" 31-Dec-19 05:14 PM I should feed more alcohol to my contacts at local unis 31-Dec-19 05:14 PM I got one vacuum rotational trantsitonal thing 31-Dec-19 05:14 PM and its NIB 31-Dec-19 05:16 PM remember to not overdose them 01-Jan-20 03:12 PM Look at this on eBay https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F392566898614 01-Jan-20 03:22 PM For all your small-portion-of-foreline-pressure measurement needs 02-Jan-20 12:12 AM I found a seller on a local site offering a lot of working Pfeiffer TPH2101UP(inverted) turbos with controllers for anywhere between $800 and $1200, depending on the looks and condition(used for sputtering so some are dirty) 02-Jan-20 12:12 AM That is, 1900l/s turbos weighing ~38kg. 02-Jan-20 12:12 AM Seems like he also has five upright TPH2101P models for ~$1600 a piece 02-Jan-20 03:36 AM <__ice9#6039> @Metanoic I have never actually had any problems with any of the working pulls I have bought 02-Jan-20 03:36 AM <__ice9#6039> Stuff listed as for parts with no history due to 'couldn't test' is more dodgy though. Usually I try to confirm with the seller as to whether the thing even powers on or whether they have any operational history on it. But in lieu of more info or a very very good price, I usually pass on those. I did obtain an excellent chemical vacuum pump that way once, but it needed some repairs to obvious external components damaged by poor handling first. Worked great after fixing. 02-Jan-20 03:36 AM <__ice9#6039> The missing power cables are usually cut off for scrap value or to make removal and relocation of the item faster, based on what some of the dealers have told me. It interferes with testing after that point obviously, but is trivial to repair if it's the only thing missing. 02-Jan-20 03:36 AM <__ice9#6039> Stuff listed as "used" gives you more rights in any dispute, though I haven't really needed to dispute much unless things get broken in transit or never arrive at all. 02-Jan-20 11:43 AM If anyone wants a high speed camera, I owned one of these in the past 02-Jan-20 11:43 AM https://www.ebay.com/itm/223827928969 02-Jan-20 11:43 AM Pretty good devices 02-Jan-20 11:43 AM Two downsides: 1) Light sensitivity 2) Firewire 02-Jan-20 11:59 AM I love it when you purchase something big on ePay, pay like 200 dollars in shipping and instead of receiving an undersized box shipped media mail or something for 20 dollars you get a call from Fedex about a freight delivery :) 02-Jan-20 11:59 AM Love it when you actually get what you pay for... Lets hope as much care went into packaging it. 02-Jan-20 05:29 PM Found another neat deal 02-Jan-20 05:29 PM https://www.ebay.com/itm/Pfeiffer-TPH60-Diffusion-Pump/133286656421 02-Jan-20 05:29 PM a new old stock "diffusion" pump 02-Jan-20 05:50 PM Ha! Someone bought the high speed camera! 02-Jan-20 05:50 PM Who was it, confess 02-Jan-20 06:21 PM There was a potential "confession" on twitter :P 02-Jan-20 06:34 PM @qualia !!!!!!!!!!!!!!!!!!!!!!!!! 02-Jan-20 06:34 PM Also that kit seems to come with a PCMCIA -> FW card 02-Jan-20 06:34 PM Congratulations on your purchase of a dead NiMh battery tho 02-Jan-20 06:35 PM curtsies ablatively 02-Jan-20 06:35 PM Half that camera is just battery 02-Jan-20 06:35 PM I'm not kidding 03-Jan-20 12:45 AM https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F324030658852 03-Jan-20 04:17 AM funny shaped viewport https://www.ebay.de/itm/202272744833 03-Jan-20 07:02 AM :D 03-Jan-20 09:01 AM Man I'd hate to be one of the passengers on the plane he got that from 03-Jan-20 09:09 AM "sir please put away the angle grinder we're at 12 km above ground" 03-Jan-20 12:44 PM "Not until you see things from my angle!" 04-Jan-20 07:58 AM https://www.govdeals.com/index.cfm?fa=Main.Item&itemid=204&acctid=11267 Jeol JSM 6400 04-Jan-20 07:58 AM that's one of the first listings I have seen on govdeals that basically stated: yeah, we could maybe help ship it 04-Jan-20 07:58 AM most of them say they wont do a thing 04-Jan-20 07:58 AM The successful bidder will be responsible for the shipping arrangements be responsible for the shipping and packaging costs for the item(s), if necessary 04-Jan-20 07:58 AM kinda broken english there.. but yeah.. SEM 04-Jan-20 09:30 AM I would have loved to find an equivalent site for Europe and/or France xD 04-Jan-20 09:35 AM I do not think they would help ship that based on that whole paragraph...seems like you would really need to have transport worked out before the auction ends too 04-Jan-20 09:35 AM "The successful bidder will be responsible for the removal of the property within (7) calendar days from the time and date of issuance of the Buyer's Certificate. UC San Diego Surplus Sales can assist with loading of the property if necessary. If the successful bidder won item(s) that require straps/ tie downs, they will have to bring their own to safely secure the item(s). UC San Diego Surplus Sales will NOT provide straps/ tie downs. The successful bidder will be responsible for the shipping arrangements be responsible for the shipping and packaging costs for the item(s), if necessary. " 04-Jan-20 09:35 AM only have 7 days to remove it from UCSD 04-Jan-20 09:35 AM (also there is a reserve who knows how high) 04-Jan-20 09:56 AM Not sure why I am looking through more listings on there but this might be of interest to some of the optics interested people assuming you have tons of space to spare: 94.5 in x 47.5 in x 2 in 04-Jan-20 09:56 AM https://www.govdeals.com/index.cfm?fa=Main.Item&itemid=6945&acctid=4788 04-Jan-20 09:56 AM It is at $25 and has a bit over a day left 04-Jan-20 05:11 PM https://www.ldsvacuumshopper.com/4odcfto1odcf.html 04-Jan-20 05:11 PM Cheapest CF adaptor I've ever seen on LDS! Thanks to the education discount I get free shipping as well 04-Jan-20 05:17 PM https://www.ebay.com/itm/Kulicke-Soffa-1470-3-Automatic-Wedge-Bonder-Wire-Bonding/233337132783 04-Jan-20 05:17 PM If anyone wants a wire bonder, found this 04-Jan-20 06:09 PM oh man, that's like 45 mins from where I grew up... seems larger than I'd expect a mechanism to bond wires would be 04-Jan-20 06:15 PM the table is unnecessary 04-Jan-20 06:16 PM I'm surprised more by the electronics 04-Jan-20 06:16 PM It's very old 04-Jan-20 07:15 PM yea a little desktop manual one would be best for hobbyests 04-Jan-20 07:15 PM a lot of these computer "automated" ones are uh... 04-Jan-20 07:15 PM well first off very complex to setup, second off, complex and has a lot of possible failure points, third off, well massive and features most probably won't need 04-Jan-20 07:27 PM Heck @Mason_Yu that's cheaper than you could buy the stainless stock itself 04-Jan-20 07:29 PM I was super surpised, it's perfect for a precision leak valve 06-Jan-20 04:30 AM Damn... :/ 06-Jan-20 08:52 AM https://www.ebay.com/itm/MDC-Vacuum-P-N-450006-Ref-No-VP-400-6-ConFlat-Flange-Viewport/264576921282 06-Jan-20 08:52 AM @GigaSquirrel here you want viewport have viewport :P 06-Jan-20 08:55 AM at the moment I actually have enough viewports, I was even thinking about selling one 06-Jan-20 08:56 AM heh yea basically in the same place right now, I don't think I have a 6" viewport but I have 2.75", 4.5" 8" at-least 06-Jan-20 08:56 AM so yea really don't need another, hopefully someone here really needs one :) 06-Jan-20 08:56 AM because that is a pretty fair price 06-Jan-20 08:56 AM also man I NEED THIS 06-Jan-20 08:56 AM https://www.ebay.com/itm/MDC-10-conflat-uhv-vaccum-quick-access-loadlock-door-lesker-varian-hps-mks/264559751317 06-Jan-20 08:56 AM just for the end of that chamber I just got 06-Jan-20 08:56 AM <333 06-Jan-20 08:56 AM too bad its like 06-Jan-20 08:56 AM wayyyy more than what I paid for the chamber haha 06-Jan-20 09:05 AM o dang that's a rly nice price on a 6" cf viewport, i spent a lot more than that on mine 06-Jan-20 09:05 AM (but i'm also good on viewports, lol) 06-Jan-20 09:11 AM https://www.ebay.com/itm/Vacuum-Chamber-for-Ciphergen-ProteinChip-SELDI-TOF/324013547102 06-Jan-20 09:11 AM If someone needs a long ISO chamber for.... Science? 06-Jan-20 09:11 AM or cutting to bits and welding to other bits 06-Jan-20 09:13 AM ISO80 or ISO100? 06-Jan-20 09:13 AM Looks closer to 80? 06-Jan-20 09:13 AM the outside diameter looks like around 120~mm 06-Jan-20 09:14 AM Oh yeah it's ISO100 06-Jan-20 09:14 AM Yea that's what I think. 06-Jan-20 09:15 AM Huh, I might just grab that... 06-Jan-20 09:15 AM go for it! its a pretty decent price for the amount of material and bits your getting 06-Jan-20 09:15 AM good for experiments where you need a long chamber 06-Jan-20 09:15 AM maybe lazor stuff 06-Jan-20 09:16 AM I'm doing TOF as well 06-Jan-20 09:16 AM Also not that I think its a good price but... CUBEEEEE 06-Jan-20 09:16 AM https://www.ebay.com/itm/Conflat-6-Way-Cube-2-3-4-Conflat-Flanges-MDC-Used-Good-Condition/174092144361 06-Jan-20 09:16 AM Honestly I could use more CF2.75(40) to KF(NW?)25/40 for roughing connections and such. I have maybe one or two. 06-Jan-20 09:22 AM https://www.ldsvacuumshopper.com/234cfcube.html 06-Jan-20 09:22 AM A cheaper cube 06-Jan-20 09:23 AM oh nice haha 06-Jan-20 09:23 AM Ya know sometimes people on eBay are really off with their prices 06-Jan-20 09:23 AM https://www.ldsvacuumshopper.com/nwto275mincf.html 06-Jan-20 09:23 AM like ESPECIALLY CONFLAT COPPER 06-Jan-20 09:23 AM This suit your needs? 06-Jan-20 09:23 AM do NOT buy it off eBay, LDS is literally always cheaper. 06-Jan-20 09:23 AM like I have yet to find a single lot of conflat copper on eBay cheaper than just buying off LDS 06-Jan-20 09:23 AM Ah yea I suppose they aren't too expensive from LDS, though I swear I every now and again see a lot of various CF2.75" stuff with a few of those in for not a ton of money. 06-Jan-20 09:23 AM kinda hoping to find something like that 06-Jan-20 09:44 AM Honestly I just need to bite the bullet and make a massive LDS order... 06-Jan-20 10:59 AM https://www.ebay.com/itm/283733397211?ul_noapp=true 06-Jan-20 10:59 AM Incredibly niche, 4 frames at 1ns 06-Jan-20 10:59 AM But 12 bux says 12 bux 06-Jan-20 10:59 AM https://www.ebay.com/itm/Cooke-Vacuum-Products-CVP-Module-1C-71-Electro-Beam-RF-WATER-J-LOAD-SALE-799/351113567520 06-Jan-20 10:59 AM Also whatever this thing is 06-Jan-20 11:09 AM jeez 06-Jan-20 11:32 AM those water cooled adjustable vacuum caps are kinda neat 06-Jan-20 11:32 AM https://www.ebay.com/itm/Cooke-Vacuum-Products-R-F-Generator-Model-SPS-5KAA-SALE-SALE-SALE-999-/151350012004 06-Jan-20 11:32 AM guess that is probably what was used to drive that? 06-Jan-20 11:35 AM probably 06-Jan-20 11:35 AM btw, if anyone here still needs a rf plasma generator... 06-Jan-20 11:36 AM Only if it's autotuning 06-Jan-20 11:36 AM heh yea I just got the N plugs I need to solder into the one I got from you giga 06-Jan-20 11:36 AM Or tunable in general 06-Jan-20 11:36 AM its got 7 taps on a 20-400 ohm matching transformer controllable electronically 06-Jan-20 11:36 AM but I think you still need a tuner on the output 06-Jan-20 11:36 AM but it has protection to shut down with too much reflected power 06-Jan-20 11:36 AM its a fairly NEW unit 06-Jan-20 11:36 AM and its only 2U so its small 06-Jan-20 11:36 AM I got some photos of it and it's guts if you want 06-Jan-20 11:36 AM its pretty inside :) 06-Jan-20 11:37 AM yes, please! 06-Jan-20 11:38 AM sorry 40-200 ohms 07-Jan-20 03:31 AM https://hgrinc.com/productDetail/Robots/Used-Fanuc-Robot/12090731035/ 07-Jan-20 03:31 AM oh man 07-Jan-20 03:31 AM that's a robot 07-Jan-20 03:31 AM attach a spindle and call that a CNC lol 07-Jan-20 08:40 AM https://www.ebay.com/itm/Huntington-Mech-Labs-DN40CF-2-75-OD-6-way-Conflat-Flange-Cross/184112261444 07-Jan-20 08:40 AM for someone looking to build an itty fusor or something 07-Jan-20 10:18 AM @Conmega Fanucs are impossible to repair and drive 07-Jan-20 10:18 AM They simply will not give you any info 07-Jan-20 10:20 AM that sucks 07-Jan-20 10:21 AM If you want a robot, take it from someone who knows them quite well: buy a KUKA. 07-Jan-20 10:21 AM Repairable, parts exist, affordable, and software.. uhh... leaks out eventually. 07-Jan-20 10:22 AM I haven't seen any robot built like that one though haha 07-Jan-20 10:22 AM did you look at the photos? 07-Jan-20 10:22 AM that's basically all I was kinda mentioning heh 07-Jan-20 10:22 AM Yeah, it looks like a custom positioner 07-Jan-20 10:22 AM quite beefy 07-Jan-20 10:24 AM https://www.ebay.com/itm/153787331709 07-Jan-20 10:24 AM cheap thermal if you want to try winning it 07-Jan-20 10:24 AM a bit dated but alright 07-Jan-20 10:24 AM Not worth more than $300-400 07-Jan-20 11:46 AM https://www.ebay.com/itm/Phytron-ZSS-32-200-1-2-stepper-motor/254402732115 07-Jan-20 11:46 AM Might be useful for someone here? 07-Jan-20 11:51 AM high vacuum stepper, cool 07-Jan-20 11:55 AM neat! 07-Jan-20 11:55 AM may just have to nab one for the new chamber for a mechanical feedthrough, though I can wait for 10% epay bucks 08-Jan-20 12:27 AM I prefer mi bowden-magnetic drive. XDDDD 08-Jan-20 04:31 AM what would a reasonable used price for a fully tested (test protocol in manual) SR844 HF lock-in amp be? 08-Jan-20 09:43 PM https://www.ebay.com/itm/High-current-2-75-CF-vacuum-feedthough/193288952535 08-Jan-20 09:54 PM wow so uh good supply of short KF-16 hoses on ePay 08-Jan-20 09:54 PM 24" the guy has 97 of them in stock 08-Jan-20 09:54 PM https://www.ebay.com/itm/KF-16-Flexible-Hose-Stainless-steel-24-HIGH-PRESSURE-VACUUM-BELLOWS/254464187604 08-Jan-20 09:54 PM he has 14 10" ones 08-Jan-20 09:54 PM https://www.ebay.com/itm/KF-16-Flexible-Hose-Stainless-steel-10-HIGH-PRESSURE-VACUUM-BELLOWS/254464187601 08-Jan-20 09:54 PM oh and this is a guy who has 101 MKS 901ps in stock... 08-Jan-20 09:54 PM https://www.ebay.com/itm/MKS-VACUUM-LOADLOCK-TRANSDUCER-901P-11040-Tested-Guarantee/254464187639 08-Jan-20 09:54 PM this is why I designed a board for them... with this many floating around its not a bad thing to design something around as a cheap display solution 08-Jan-20 09:58 PM There's a cheaper seller 08-Jan-20 09:58 PM https://www.ebay.com/itm/MKS-901P-11040-MicroPirani-Piezo-Loadlock-Vacuum-Pressure-Transducer/202636260062 08-Jan-20 09:58 PM We should probably pin this one ^ 08-Jan-20 09:58 PM $35 each and he has more than 10 after selling 72, one of which went to me(and I have it, so it's an ok seller) 08-Jan-20 10:03 PM right, I think I got one from him too but it seems he has 28 left so he only had 100 I guess? that or he just threw 100 in when it initally listed 08-Jan-20 10:03 PM either way the point was more of, there are a ton of them, search epay and sort by cheapest for you 08-Jan-20 10:03 PM And also that guy specifically has a TON of KF stuff he must have de-installed from somewhere 08-Jan-20 10:06 PM i think all the 901P stuff, VAT valves, and the bellows were from the same surplus lots 08-Jan-20 10:06 PM few different sellers all got that stuff around the same time 08-Jan-20 10:06 PM story was that they built out the facilities but never flipped any switches 08-Jan-20 10:07 PM Wasn't it an Intel fab? 08-Jan-20 10:07 PM says this on the kf bellows listing "These were part of an assembly for a brand new sapphire production facility in Silicon Valley that was never commissioned. This part has never been used in production. Missing the original packaging. " 08-Jan-20 10:07 PM I recall it was a big brand name 08-Jan-20 10:08 PM that was the same story i got from the seller i got a couple of the VAT valves from 08-Jan-20 10:08 PM never was told a company tho 08-Jan-20 10:09 PM this was that company Apple was commissioning for sapphire glass that folded wasn't it lmao 08-Jan-20 10:09 PM https://www.siliconvalley.com/2014/10/08/apple-surprised-by-sapphire-glass-maker-bankruptcy/ 08-Jan-20 10:10 PM Well they sure did fold badly, given that $35 gauges are now on ebay 08-Jan-20 10:10 PM Especially since they cost what, $300 new? 08-Jan-20 10:11 PM what happened probably was they had a company commissioned to do work, paid them in part to buy a bunch of stuff then never paid them the rest for the rest of the work 08-Jan-20 10:11 PM they probably came after them in court and they said just keep the equipment as payment and they agreed 08-Jan-20 10:11 PM probably realized they could never sell the stuff on eBay for new price and sell the stuff at ANY rate 08-Jan-20 10:11 PM either way I don't care 08-Jan-20 10:11 PM cheap stuff is cheap 08-Jan-20 10:11 PM and thus, the great ebay vacuum flood 08-Jan-20 10:14 PM this seemed more like industrial surplus auction lots that various ebay sellers got than anything by the company directly 08-Jan-20 10:14 PM probably was whoever came in to deal with their assets after the bankruptcy 08-Jan-20 10:14 PM anyone know what process they were going to use to grow the sapphire? 08-Jan-20 10:19 PM Something under a lotta vacuum 08-Jan-20 10:21 PM https://www.youtube.com/watch?v=H-x7XMPaWIE 08-Jan-20 10:21 PM probably that... 08-Jan-20 10:32 PM "From Apple/GT Advanced Technologies sapphire plant in Arizona that shut down before it was fully operational because it could not meet demand for the new iphone screens" 08-Jan-20 10:32 PM from one of the other listings from the bellows seller 09-Jan-20 03:08 AM @Deleted User i think closer to $600 new 09-Jan-20 07:33 AM I should get one of those MKS 901P in the future 09-Jan-20 09:21 AM I have one sitting around I got cheap. Have yet to hook it up though. Too many other projects. 09-Jan-20 02:55 PM https://www.ebay.com/itm/ULVAC-C2W-U-C2W303-CRYOMINI-CRYO-PUMP-COMPRESSOR/391223256433 09-Jan-20 02:55 PM Found this if anyone wants a go at cryo 09-Jan-20 02:55 PM Paired with something like this 09-Jan-20 02:55 PM https://www.ebay.com/itm/LEYBOLD-RGD-210-ULTRA-HIGH-VACUUM-CRYOGENIC-CRYO-PUMP-10-KELVIN-RPK-500/293360322186 09-Jan-20 02:55 PM And a good few weeks of tinkering 09-Jan-20 06:08 PM oh dang 09-Jan-20 06:08 PM i've been looking for a cheap cryocooler/coldhead setup to produce a little LN2 09-Jan-20 06:31 PM you are in California, aren't you? make sure you do the math on buying vs making it... i think it works out to be a bit cheaper to just buy it with power costs taken into account if you have somewhere local you can get it and a dewar... only place i looked gets you with the dewar rental/delivery fees 09-Jan-20 06:36 PM yeah, in Los Angeles 09-Jan-20 06:36 PM it may not make exact economic sense, but i am willing to spend some money if it means not leaving the house :\ 09-Jan-20 06:37 PM i understand that 09-Jan-20 06:37 PM everyone getting cryo stuff all the sudden is kinda funny 09-Jan-20 06:37 PM and part of the fun is the project/process itself 09-Jan-20 06:37 PM i still need to look into the UHP helium tank thing to see if mine will be worth trying to get running 09-Jan-20 06:38 PM what do you have / trying to get running? 09-Jan-20 06:39 PM i picked up a cryo-torr 7 and compressor a couple weeks ago but have had a bunch of other stuff going on during the day 09-Jan-20 06:39 PM everything seems in working order just needs the helium fill 09-Jan-20 06:40 PM nice! 09-Jan-20 06:40 PM since i have a feeling the UHP helium side of things will cost more than the other stuff did (ebay steal) i have not been in any rush too 09-Jan-20 06:40 PM http://www.cryotek.co/services-and-pricings/ <-- this was one place i checked into for LN2 09-Jan-20 06:58 PM ahh 09-Jan-20 07:15 PM @samy just remember that if you pick those two up you will be in for a journey on making it work 09-Jan-20 07:15 PM And/or repairing it if it's dead 09-Jan-20 07:15 PM Also, big catch: the helium hoses cost money 09-Jan-20 07:17 PM yeah, i'm not ready for those as i need to learn more and not ready for a "for parts" system 09-Jan-20 07:18 PM There are working compressors and heads but they cost quite a bit more 09-Jan-20 07:18 PM And generally require 3ph 09-Jan-20 07:18 PM helium lines are so expensive its ridiculous...only reason i even bought mine was that it had the lines too 09-Jan-20 07:18 PM you can find them cheap, sometimes 09-Jan-20 07:19 PM interesting 09-Jan-20 07:19 PM This is also a warning to everyone - beware, the cheap Oxford M600 compressors on ebay($200-400) are cheap because they pull 25A from 3ph 230V and are rated at 7.8kW input power. 09-Jan-20 07:20 PM Yikes 09-Jan-20 07:20 PM Good notice. Thanks. 09-Jan-20 07:21 PM That's why that little Ulvac I linked is a super neat option 09-Jan-20 07:21 PM It's still sitting at 10 bar, which means it's not dead 09-Jan-20 07:21 PM (probably) 09-Jan-20 07:21 PM https://www.ebay.com/itm/CRYO-COMPRESSOR-VARIAN-will-ship-collect-or-local-pick-up/183739106216 09-Jan-20 07:21 PM this is also an option 09-Jan-20 07:23 PM my compressor is 10A 120V and the power cord is pretty anemic 09-Jan-20 07:23 PM @samy if you haven't bought a turbo yet, this might be a very nice option for you 09-Jan-20 07:23 PM so best to plan for that too 09-Jan-20 07:23 PM because cryopumps are... well, cryopumps! 09-Jan-20 07:23 PM stick them on a chamber, rough, then turn on the compressor and let it freeze/liquefy(+trap) all the gases inside 09-Jan-20 07:24 PM interesting 09-Jan-20 07:24 PM The added bonus is that: 1) Your chamber could implode and the pump wouldn't care. They survive instant depressurization happily. 2) The pumping speeds are HUGE 09-Jan-20 07:24 PM Even small cryopumps can pull in thousands of liters per second 09-Jan-20 07:24 PM i could use this in lieu of the turbo for ITO sputtering? 09-Jan-20 07:24 PM Yes. 09-Jan-20 07:25 PM they are commonly used on coating setups 09-Jan-20 07:25 PM The small downside is that they take longer to start, maybe 5-10 minutes for the small ones 09-Jan-20 07:25 PM But that's negligible for the benefits 09-Jan-20 07:25 PM (and you get free liquid air when you're not vacuuming) 09-Jan-20 07:26 PM that is attractive 09-Jan-20 07:29 PM https://www.ebay.com/itm/Helix-CTI-Cryogenics-Cryopump-Hi-Torr-High-Vacuum-Pump-8F/401782109865 09-Jan-20 07:29 PM could probably lowball this seller 09-Jan-20 07:29 PM looks nice 09-Jan-20 07:29 PM chunky flange though 09-Jan-20 07:29 PM oh here's a unit with a random price 09-Jan-20 07:29 PM https://www.ebay.com/itm/APD-CRYOGENICS-MODEL-CRYOPUMP-AP-4-P-N-255752E1/193096933008 09-Jan-20 07:30 PM They take no time to start pumping if you valve everything right, you just have the cryo sectioned off from the main chamber allowing you to open the main chamber while the cryo pumps 09-Jan-20 07:30 PM with a flange adapter to KF 09-Jan-20 07:30 PM yeah @Conmega they just take a bit to cool down 09-Jan-20 07:31 PM that 8F has some nasty corrosion/residues...would probably avoid that unless the seller has details about what it was doing 09-Jan-20 07:31 PM at low gas loads pumping is instant if you just gate it off 09-Jan-20 07:32 PM there is also one thing to consider with cryo, needing to let the cryo warm back up and outgas to re-generate it 09-Jan-20 07:32 PM are you really going to run out of pump holding capacity though? 09-Jan-20 07:33 PM for most of our applications with the fact that we won't leave the system on 24/7 09-Jan-20 07:33 PM no 09-Jan-20 07:33 PM On the physics side of things, is it simple diffusion that gets the molecules into the cold, or is there another physical process that attracts them? 09-Jan-20 07:33 PM but if you run this for a few days and keep opening/closing the chamber and gating off the cryo pump to keep from letting that to atmosphere, yes you will get to that as a problem 09-Jan-20 07:33 PM https://www.ebay.com/itm/BROOKS-CTI-CRYOGENICS-ON-BOARD-4-CRYOPUMP/163281857203 09-Jan-20 07:33 PM they just bounce down there and hit the hold end 09-Jan-20 07:33 PM dream high vacuum pump right here 09-Jan-20 07:33 PM at some point 09-Jan-20 07:34 PM In molecular flow everything is "simple diffusion" 09-Jan-20 07:34 PM brains built in, power supply built in, ISO flange on top 09-Jan-20 07:34 PM perfect 09-Jan-20 07:34 PM So not any sort of "wants to be where it's cold cause lower state of energy" sort of thing in addition? 09-Jan-20 07:34 PM price is not perfect though... 09-Jan-20 07:34 PM yeah 09-Jan-20 07:35 PM @Metanoic Not in the sense that it attracts molecules from all over the chamber 09-Jan-20 07:35 PM It just traps whatever molecules that happens to bounce in there 09-Jan-20 07:35 PM brains? 09-Jan-20 07:35 PM Gotcha. 09-Jan-20 07:36 PM there is no need for brains litterally every other cryo pump I see on the planet is just a 120V input to power the little motor doing the valving in the cryo head 09-Jan-20 07:36 PM Thanks Mason 09-Jan-20 07:36 PM if you have helium pressure you turn it on 09-Jan-20 07:36 PM not really all that complex 09-Jan-20 07:36 PM https://www.ebay.com/itm/CTI-Cryogenics-8120948G001-On-Board-Waterpump-MRC-Eclipse-Star-Used-Working/142155571990 09-Jan-20 07:36 PM "on board waterpump" 09-Jan-20 07:36 PM perhaps not the best name in the world 09-Jan-20 07:36 PM Self contained I think is best term 09-Jan-20 07:36 PM Self contained / closed cycle 09-Jan-20 07:36 PM these CTI pumps have a bit of brains in them AFAIK 09-Jan-20 07:36 PM for degassing 09-Jan-20 07:36 PM wth? 09-Jan-20 07:36 PM ahh I see that would make sense I suppose 09-Jan-20 07:37 PM I'm guessing it's a cryopump designed to mainly pump water vapor? 09-Jan-20 07:37 PM not sure how it detects when its getting filled but ok 09-Jan-20 07:37 PM ahh that would be interesting yea 09-Jan-20 07:37 PM it detects it when you tell it to detect 09-Jan-20 07:37 PM :P 09-Jan-20 07:38 PM ah so more just handles the valve sequencing when you tell it to do a de-gass 09-Jan-20 07:38 PM ok 09-Jan-20 07:38 PM and probably a built in heater 09-Jan-20 07:38 PM that's nice I suppose but unless they go cheap its pretty simple to just do it yourself. 09-Jan-20 07:38 PM I don't see a reason for them to specify 220V @ 6A for any other purpose 09-Jan-20 07:38 PM that's fair 09-Jan-20 07:38 PM but just be careful 09-Jan-20 07:38 PM there are sometimes "low vibration" 3 phase cryo heads 09-Jan-20 07:38 PM you will not be happy if you get a 3 phase cryo head and have no 3 phase 09-Jan-20 07:38 PM so just keep that in mind 09-Jan-20 07:39 PM whoa, what in the world is this 09-Jan-20 07:39 PM https://www.ebay.com/itm/3675-SHIMADZU-TURBO-PUMP-W-ULVAC-CRYOGENICS-SUPER-TRAP-CRYO-T8PM-W-TMP-1003LM/122216139484 09-Jan-20 07:39 PM and do research 09-Jan-20 07:39 PM does the turbo just... slam the droplets down or something? 09-Jan-20 07:39 PM turbo+cryo in a single package 09-Jan-20 07:39 PM oh its a turbo with a cryo trap 09-Jan-20 07:39 PM looks like maglev turbo too 09-Jan-20 07:39 PM I have seen those cryo traps before 09-Jan-20 07:39 PM can't quite remember the benefit except maybe dealing with moisture really well 10-Jan-20 12:12 AM https://hgrinc.com/productDetail/Air-Handling/Used-Chart-Helium-Compressor/08190930004/ 10-Jan-20 12:12 AM 6KW helium compressor for 70 bucks... 10-Jan-20 12:12 AM need to pump your house down? 10-Jan-20 12:13 AM 6kw is average 10-Jan-20 12:13 AM the m600 is 7.8 10-Jan-20 01:12 AM this is really tempting for the end of my chamber 10-Jan-20 01:12 AM https://www.ebay.com/itm/High-Vacuum-10-CF-Flange-Viewport/333464883150 10-Jan-20 01:12 AM cleaning that will be fun though :s 10-Jan-20 01:13 AM it's a wonderful 10" first surface mirror 10-Jan-20 01:13 AM lol 10-Jan-20 01:13 AM wait 10-Jan-20 01:13 AM ' is feet, " is inches, right? 10-Jan-20 01:13 AM he meant inches... 10-Jan-20 01:13 AM clearly he meant inches... 10-Jan-20 01:13 AM there is no way that is 10 feet 10-Jan-20 01:14 AM easy way to clean it: put some putty around the edges, make a little boat, pour some low conc acid 10-Jan-20 01:14 AM you have a slightly smaller but perfectly clean viewport :P 10-Jan-20 01:14 AM I have those shipping blankes I know that pattern :P 10-Jan-20 01:14 AM I know, that's why I was asking, I'm not very familiar with that system 10-Jan-20 01:14 AM Conflat is conflat its either the outside diameter in inches or the inside in MM or something like that 10-Jan-20 01:14 AM oh you just mean... murican measurement system 10-Jan-20 01:14 AM lol yea it makes no sense no-matter what 10-Jan-20 01:17 AM oh man, this is neat 10-Jan-20 01:17 AM https://www.ebay.com/itm/VARIAN-949-9441-MDP12-DIAPHRAGM-Vacuum-PUMP-KNF-Neuberger-PJ-10534-813-4-115V/333464857519 10-Jan-20 01:17 AM I really want it :< 10-Jan-20 01:17 AM shipping would kill me though 10-Jan-20 01:18 AM any reason for a diaphram other than its the poor man's scroll because dry? 10-Jan-20 01:18 AM dry, zero maintenance, quiet-ish 10-Jan-20 01:18 AM shipping is 61 bucks for me lol 10-Jan-20 01:18 AM zero? you mean until the diaphrams fail 10-Jan-20 01:18 AM imagine how much it would be for me if it shipped international 10-Jan-20 01:18 AM the diaphragms fail but that will take a long time 10-Jan-20 01:19 AM depending on what they were pumping,... 10-Jan-20 01:19 AM lol 10-Jan-20 01:20 AM main place those shine is chemistry, isnt it? 10-Jan-20 01:21 AM yes 10-Jan-20 01:23 AM i wonder what the funk in the hose on that pump is 10-Jan-20 01:23 AM probably the stuff you don't want to pump through it 10-Jan-20 02:03 AM Hey that's the guy I got my chamber off of 10-Jan-20 02:03 AM The 10" viewport post 10-Jan-20 02:05 AM also the diaphragm pump 10-Jan-20 02:10 AM Yep 10-Jan-20 02:10 AM He's in here somewhere btw. Sent him an invite shortly after I got back home from meeting him 10-Jan-20 02:14 AM ohh, nice 10-Jan-20 02:14 AM our very own Hardware supplier 10-Jan-20 03:47 AM https://www.ebay.com/itm/MDC-Vacuum-P-N-450006-Ref-No-VP-400-6-ConFlat-Flange-Viewport/264576921282 10-Jan-20 03:47 AM Man is it just me or has viewports been getting more common and cheaper on ePay 10-Jan-20 03:47 AM https://www.ebay.com/itm/MDC-Vacuum-P-N-408004-Ref-CU400-6-6-Conflat-Flange-Cube/264493369757 10-Jan-20 03:47 AM ugh cubeeeee 10-Jan-20 05:53 AM https://www.ebay.com/itm/Large-VARIAN-Industrial-Shut-Off-Valve-Assembly/184121689202 10-Jan-20 05:53 AM holy valve batman 10-Jan-20 09:54 AM Now there's your toilet drain valve, straight out of super Mario Bros 10-Jan-20 09:54 AM Oh man, there's a new spin on that game... They're actually vacuum engineers, and all the goombas/enemies are virtual leaks in their underground mega vacuum chambers 10-Jan-20 01:10 PM It’s probably fine but the dent/crease in the bellows concerns me a bit on that valve. But that’s the real deal legit high vacuum valve right there. They are way better than gate or butterfly valves. 10-Jan-20 10:21 PM the only concern are the knife edges due to being rotatable flanges 10-Jan-20 10:21 PM its like 10-Jan-20 10:21 PM if they are fixed flanges there is some possibility of the knife edge being safe thanks to if its on a flat surface it won't touch the knife edge 10-Jan-20 10:21 PM but rotatable flanges, you set it down on a surface and you screw up the knife edge... 11-Jan-20 01:11 PM https://www.ebay.com/itm/303441149667?ul_noapp=true 11-Jan-20 01:11 PM Just in case anyone is starting an illegal state of the art PMC 11-Jan-20 01:12 PM PMC? 11-Jan-20 01:12 PM private military contractor :P 11-Jan-20 01:12 PM hah 11-Jan-20 01:13 PM the safire 2 is pretty much the best ball-looking baddie-filming-illuminating thing you can put on any vehicle 11-Jan-20 01:13 PM well, the newer version is anyway, this is a bit older 11-Jan-20 01:14 PM that seems like something where you would get a visit from someone asking what you plan to use it for 11-Jan-20 01:18 PM within the US you just sign a waiver 11-Jan-20 01:18 PM if that shows up at US customs you sign imprisonment forms 11-Jan-20 01:19 PM i wonder if that was something stuffed in the back of an auction lot 11-Jan-20 01:19 PM always interesting when stuff like that appears on eBay 11-Jan-20 01:19 PM judging by the background and reflection of the photo it's a refurbishment place 11-Jan-20 01:19 PM "excessed" 11-Jan-20 01:19 PM possibly replaced with the newest safire hd 11-Jan-20 01:21 PM yeah i was just wondering if it was on a pallet in a conex box then auctioned off with a bunch of other stuff or just as a standalone thing 11-Jan-20 01:21 PM 30 grand isn't unreasonable for a commercial customer but the specs are not very impressive 11-Jan-20 01:21 PM it's only a 320x240 cooled MWIR imager 11-Jan-20 01:21 PM with a giant zoom lens 11-Jan-20 01:21 PM (now that's worth money) 11-Jan-20 02:23 PM @Conmega isn't the knife edge on the rotatable portion itself though? 11-Jan-20 02:25 PM not afaik...rotatable flanges have two parts a ring that goes around and the part with the knife edge/bore 11-Jan-20 02:25 PM guess it depends on how you are defining the rotatable portion 11-Jan-20 02:25 PM Yep you're right. Disregard. Just checked some of my photos 11-Jan-20 06:29 PM Lol, PMC around my area means Power Management Controller 12-Jan-20 11:08 AM https://i.spirit.re/9Vyr7.png 12-Jan-20 11:08 AM ha 12-Jan-20 10:21 PM DIY Reaper drone? 13-Jan-20 01:51 AM anyone know a "good" aliexpress HDMI microscope camera (C mount, I think) 13-Jan-20 01:51 AM (i.e. not just picking something randomly from the search results) 13-Jan-20 06:29 AM https://www.ebay.com/itm/High-Vacuum-8-CF-Flange-View-port-Used-Excellent-Confition/333476578043 13-Jan-20 06:29 AM ... man 13-Jan-20 06:29 AM someone buy this please, it hurts to see a nice viewport that cheap haha 13-Jan-20 06:29 AM same guy who posted that 10" one 13-Jan-20 06:29 AM jeez 13-Jan-20 09:37 AM isnt that the professor guy who someone got a big chamber from? he probably has a lot more from the sound of it 13-Jan-20 09:40 AM yea that's him, I got the big chamber from him 13-Jan-20 09:40 AM he has a bunch of gate valves that will surely come up sooner or later 13-Jan-20 09:42 AM I'm certainly interested in some gate valve @dstar 13-Jan-20 10:02 AM https://www.govdeals.com/index.cfm?fa=Main.Item&itemID=204&acctID=11267&utm_campaign=website&utm_source=sendgrid&utm_medium=email 13-Jan-20 11:12 AM relisted still reserve cool... 13-Jan-20 11:12 AM @Mason_Yu what size gate valve? 13-Jan-20 11:13 AM 4.5" conflat if possible 13-Jan-20 11:13 AM ahh ok 13-Jan-20 11:13 AM there is a bunch of pneumatic 6" ones available from a seller 13-Jan-20 11:14 AM Yeah I saw them 13-Jan-20 11:14 AM hrmmm 4.5" is one I am not sure I have come across commonly 13-Jan-20 11:14 AM That's my problem! 13-Jan-20 11:14 AM here is my ePay valve search: (edwards,vat,balzers,leybold,varian,mks,mdc,pfeiffer,Kurt J Lesker,nor-cal,nor cal,hps) valve 13-Jan-20 11:14 AM have fun with that 13-Jan-20 11:14 AM wait is this? 13-Jan-20 11:15 AM Thanks, I'll keep looking. I think adapting to a smaller 2.75" angle valve is an option as well 13-Jan-20 11:15 AM https://www.ebay.com/itm/MDC-Vacuum-Products-EGV-2500M-Manual-Gate-Valve-2-5/362876233093 13-Jan-20 11:16 AM Woah 13-Jan-20 11:16 AM yea I think that is 13-Jan-20 11:16 AM guy says a "plate is missing" but I think he doesn't understand they only seal one side? 13-Jan-20 11:16 AM I mean at that price its worth the gamble 13-Jan-20 11:16 AM there is another way more expensive but nicer and studded option 13-Jan-20 11:16 AM https://www.ebay.com/itm/MDC-GV-2500M-P-02-Gate-Valve/153421711505 13-Jan-20 11:18 AM Yeah this guy has a habit of mislabeling conflat flange sizes 13-Jan-20 11:18 AM I think he just measures the inside diameter 13-Jan-20 11:18 AM I might gamble on the first one then 13-Jan-20 11:18 AM wait... 13-Jan-20 11:18 AM lets just google the model no 13-Jan-20 11:18 AM eh darn no results 13-Jan-20 11:18 AM ugh it could be 3.38" tbh 13-Jan-20 11:18 AM which if it is is just blah 13-Jan-20 11:18 AM let me do a little bit more research for you real quick 13-Jan-20 11:18 AM I am pretty sure its 4.5" since inner diameter is 2.38" on 4.5" and he says 2.5" 13-Jan-20 11:18 AM yea 3.38" is like 2" ID 13-Jan-20 11:22 AM Oh yeah it is 4.5" 13-Jan-20 11:22 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-D9B77.png 13-Jan-20 11:22 AM yea thats totally 4.5" 13-Jan-20 11:22 AM oh nice you did find it 13-Jan-20 11:22 AM cool! 13-Jan-20 11:22 AM go for it! 13-Jan-20 11:22 AM also let me know if you ever need help finding parts... 13-Jan-20 11:22 AM seriously my ePayfoo is basically the best 13-Jan-20 11:23 AM Wait a second, just let me figure out adapting to my chamber 13-Jan-20 11:23 AM other than for SEMs 13-Jan-20 11:23 AM Adam I think just sees them get posted in his sleep 13-Jan-20 11:23 AM right @AdamMcCombs ? 13-Jan-20 11:23 AM Haha, I'm looking for SEM parts as well 13-Jan-20 11:23 AM what is your connections ATM? 13-Jan-20 11:23 AM Right now a digital imaging interface 13-Jan-20 11:23 AM Connections as in connections to the SEM people at my school? Or do you mean connection to the vacuum chamber? 13-Jan-20 11:26 AM oh no you said you have to figure out what connections to the valve... 13-Jan-20 11:26 AM or "Adapting to my chamber" 13-Jan-20 11:26 AM Yeah, that chamber I got from the TOF spectrometer for cheap 13-Jan-20 11:26 AM So it has flat 4.5" CF flanges on the two ends and studs that comes out 13-Jan-20 11:26 AM So I need to see if I can replace them with bolts instead first 13-Jan-20 11:28 AM oh... they are studded? 13-Jan-20 11:28 AM thats bad... you can't really do studded to studded... 13-Jan-20 11:28 AM Yep, it's a weird chamber 13-Jan-20 11:28 AM you'll either have to drill out the threads on the chamber or get a 4.5" to 4.5" 13-Jan-20 11:29 AM Well I can try just extracting the stud using the two nut technique first 13-Jan-20 11:29 AM And then go from there 13-Jan-20 11:30 AM this unfortunately doesn't help but man what a hunk of metal. https://www.ebay.com/itm/C163941-Hakudo-Conflat-4-5-CF-Vacuum-Flange-Union-4-5-Long/333412221356 13-Jan-20 11:30 AM @Mason_Yu but even if you do you need it to be a through hole... 13-Jan-20 11:30 AM so you'd need to drill them out 13-Jan-20 11:30 AM Might have to drill out the hole on the valve, not the chamber 13-Jan-20 11:30 AM Shouldn't be a problem 13-Jan-20 11:31 AM uhhh 13-Jan-20 11:31 AM you can't? 13-Jan-20 11:31 AM where would the bolt heads go? 13-Jan-20 11:31 AM or the nuts I mean 13-Jan-20 11:31 AM inside the valve? 13-Jan-20 11:31 AM you can't do that 13-Jan-20 11:31 AM https://www.ebay.com/itm/Conflat-cross-MDC-4-5-OD/133230636869 13-Jan-20 11:31 AM you could extend your chamber 13-Jan-20 11:31 AM if your looking for places to put more stuff 13-Jan-20 11:32 AM Ah that's a better option 13-Jan-20 11:32 AM that's honestly not a bad price for that 4 way 13-Jan-20 11:32 AM it has a 4.5->2.75" and a blank already 13-Jan-20 11:32 AM just have your valve 90 degrees down then you just need a 4.5" blank or another adapter 13-Jan-20 11:34 AM And room for gauges! 13-Jan-20 11:36 AM yea! 13-Jan-20 11:36 AM please get the 4 way but another option 13-Jan-20 11:36 AM https://www.ebay.com/itm/MDC-4-5-Conflat-Vacuum-Chamber-High-Vacuum-Flange-Length-Adapter-3-25-Long/222805576292 13-Jan-20 11:36 AM if you wanted a simple thing 13-Jan-20 11:38 AM I really lack standardized ports on this chamber, so the 4 way will give me room for a full range gauge 13-Jan-20 11:38 AM And now I need a 4.5" CF to ISO63 adaptor 13-Jan-20 11:38 AM For a small turbopump 13-Jan-20 11:39 AM yea well my new chamber taught me about a new conflat size... 13-Jan-20 11:39 AM I didn't need to know exists... 13-Jan-20 11:39 AM and basically my only option... weld up an adapter 13-Jan-20 11:39 AM no-one sells adapters 13-Jan-20 11:39 AM only flanges 13-Jan-20 11:39 AM 6.75" 13-Jan-20 11:39 AM WHY 13-Jan-20 11:39 AM Is it super old? 13-Jan-20 11:40 AM I dunno its just a random big chamber I got off ePay 13-Jan-20 11:40 AM https://www.ebay.com/itm/VACUUM-CHAMBER-230544/392591642532 13-Jan-20 11:40 AM this guy 13-Jan-20 11:40 AM wow what a steal 13-Jan-20 11:41 AM yea 13-Jan-20 11:41 AM 300 bucks shipped but yea 13-Jan-20 11:41 AM only one 2.75" damaged knife edge and honestly I bet it'll still seal 13-Jan-20 11:41 AM beats my $500 + 26hours of driving 13-Jan-20 11:41 AM someone went in under the copper with a flathead.... SMH 13-Jan-20 11:41 AM hit the knife edge and well yea pushed it up a bit 13-Jan-20 11:41 AM I might either be-able to gently hammer it back down or the sharper edge may just still seal 13-Jan-20 11:42 AM I wonder if anyone makes a fly cutter style edge resurfacer 13-Jan-20 11:42 AM worst case I can use viton 13-Jan-20 11:42 AM I am just going to try a blank and a fresh copper 13-Jan-20 11:42 AM To help it seal you might take a really high grit stone and just glide it over the protruding bit 13-Jan-20 11:42 AM if it seals I will sharpie the blank as BAD KNIFE and just never open it again 13-Jan-20 11:42 AM I will try it once as is because I can't undo re-surfacing 13-Jan-20 11:43 AM I imagine a bearing supported shaft with appropriate bolt holes to mate up to the cf and then just a little fly cutter/boring head style tip 14-Jan-20 12:58 AM <__ice9#6039> If you aren't planning to bake it out, or if you don't mind some melting (surface tension still retains), you could perhaps use indium over the copper. It's amazing for metal to metal seals. Vapor pressure is quite low. I use it mostly just for cryogenic gaskets (stays malleable down to LHe temperatures) or in galinstan for various stuff, but it should work here too. 14-Jan-20 12:58 AM <__ice9#6039> It's reusable as well; just scrunch it up a bit or melt it 14-Jan-20 12:58 AM <__ice9#6039> Often sold as gaskets (expensive) but usually more sensible to just buy it as wire and then squish it flat into the desired shape with some overlap at the seam (it cold welds to itself under pressure, esp if you pre-treat with dilute HCl) 14-Jan-20 12:58 AM <__ice9#6039> https://www.indium.com/blog/etching-indium-to-remove-oxides.php 14-Jan-20 12:58 AM <__ice9#6039> Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/1578992827539-E40B5.png 14-Jan-20 02:40 AM @__ice9 yea I am quite familar with Indium, we use it at work for CPU thermal interface :) 14-Jan-20 11:26 PM https://www.ebay.com/itm/323754294063 Would make a very nice (guilt free) teardown, but not for that price... 15-Jan-20 12:00 PM https://www.ebay.com/itm/ISO63-ISO-63-to-KF40-KF-40-High-Vacuum-Reducer-Fitting-Flange-Adapter/233461173056 15-Jan-20 12:00 PM nice little ISO 63 to KF40 for say slapping on an ISO63 Varian V70 turbo and having a little pump down station. 15-Jan-20 12:03 PM I went this way, but except with KF50 15-Jan-20 12:04 PM did the same with my drag 15-Jan-20 12:08 PM I already have one of these adapters otherwise I'd have nabbed it 15-Jan-20 12:08 PM its a fair price 15-Jan-20 12:08 PM maybe make an offer for 40 so its 50 shipped in the states 15-Jan-20 12:08 PM but if you have a lathe you can just be cheeky and say I can make that in an hour! 15-Jan-20 12:08 PM eyes up some lucky people with lathes 15-Jan-20 02:18 PM are these adapters typically stainless steel? 15-Jan-20 02:19 PM <__ice9#6039> Yes 16-Jan-20 10:24 AM https://www.ebay.com/itm/174156894462?ul_noapp=true 16-Jan-20 10:24 AM !!!!!!!!!!!! 16-Jan-20 12:28 PM Any Polish people here? I found something neat that I might want a piece of if negotiations can be had. 16-Jan-20 08:50 PM <__ice9#6039> This is not a very good deal... 16-Jan-20 08:50 PM <__ice9#6039> I have seen 500W fiber lasers for comparable pricing before 16-Jan-20 08:51 PM No you have not 16-Jan-20 08:51 PM A 500W pulsed fiber laser would cost roughly a quarter of a million dollars 16-Jan-20 08:51 PM give or take 16-Jan-20 08:52 PM <__ice9#6039> Granted, that in turn was unusual 16-Jan-20 08:53 PM Note that it's pulsed 16-Jan-20 08:53 PM <__ice9#6039> Yes I have and I almost bought it, except that I already have 1.6kW of 808nm diodes staring at me jealously. 16-Jan-20 08:53 PM Very different from CW fiber lasers 16-Jan-20 08:53 PM <__ice9#6039> Yeah ok so Q-switch it. 16-Jan-20 08:53 PM It's a q-switched fiber laser 16-Jan-20 08:53 PM As in, fiber. Laser. The lasing happens in the fiber. 16-Jan-20 08:53 PM <__ice9#6039> Passive Q-switch crystals are about $100 from China and I have that too 16-Jan-20 08:53 PM <__ice9#6039> Ah I see. 16-Jan-20 08:53 PM <__ice9#6039> Yes that's harder. 16-Jan-20 08:53 PM Passive q switches will not work here 16-Jan-20 08:54 PM <__ice9#6039> Yes exactly. 16-Jan-20 08:54 PM With a regular diode pumped 808 either 16-Jan-20 08:54 PM <__ice9#6039> Tbf the one I saw was a fiber coupled diode laser, not a true fiber laser 16-Jan-20 08:54 PM You're also missing a step there - just diodes cannot be q-switched 16-Jan-20 08:54 PM Since the lasing cavity is self-contained 16-Jan-20 08:55 PM <__ice9#6039> I know that... 16-Jan-20 08:55 PM <__ice9#6039> I was talking about YAG DPSS 16-Jan-20 08:55 PM A 500W pump needs a good $5-10k in gear to build a laser, assuming you buy used parts 16-Jan-20 08:55 PM <__ice9#6039> That's not true. 16-Jan-20 08:55 PM <__ice9#6039> I have a cavity and YAG rod already that was only a few hundred. 16-Jan-20 08:55 PM Cavity? 16-Jan-20 08:55 PM You mean reflectors? 16-Jan-20 08:56 PM <__ice9#6039> For DPSS 16-Jan-20 08:56 PM <__ice9#6039> It has the mirrors as well yes 16-Jan-20 08:57 PM A 500W DPSS emitter(pumps+rod) with water cooling is around $2-3k from China 16-Jan-20 08:57 PM <__ice9#6039> Anyway a 500W fiber coupled pump can also be used directly for CNC cutting given the appropriate focusing optics, but that's beside the point 16-Jan-20 08:57 PM <__ice9#6039> Yes mine was not new lol 16-Jan-20 08:57 PM you then need a constant current power supply capable of dumping a few kW into a high impedance load 16-Jan-20 08:57 PM and a chiller capable of keeping that at room temp 16-Jan-20 08:57 PM +- a hair 16-Jan-20 08:57 PM <__ice9#6039> Look, I know you think I know nothing, but I own all of these things already, so kindly adjust your tone please.... 16-Jan-20 08:58 PM I know, it's just not as cheap 16-Jan-20 08:58 PM <__ice9#6039> I have a 2kW PSU of that nature that cost $150 16-Jan-20 08:58 PM <__ice9#6039> Chiller was $300 16-Jan-20 08:58 PM <__ice9#6039> Etc 16-Jan-20 08:58 PM <__ice9#6039> They are multi-purpose tools 16-Jan-20 08:59 PM Either way, it's really not that cheap 16-Jan-20 08:59 PM q switching is another pain, but that's more of a luck and searching problem, to find the right switch for your laser 16-Jan-20 09:00 PM <__ice9#6039> I already clarified above regarding the fiber coupled diode 16-Jan-20 09:00 PM me and Mason bought two 50W DPSS lasers, the pump input power is around 700W 16-Jan-20 09:00 PM <__ice9#6039> That's unusually inefficient. 16-Jan-20 09:00 PM they're a bit old 16-Jan-20 09:00 PM but German 16-Jan-20 09:01 PM <__ice9#6039> low to mid double digit efficiency is typical 16-Jan-20 09:01 PM <__ice9#6039> Oh you mean pump input power 16-Jan-20 09:01 PM pump input, yeah 16-Jan-20 09:01 PM electrical watts in, versus optical rod watts out 16-Jan-20 09:01 PM <__ice9#6039> Yeah modern pumps are about 50-60% optically efficient 16-Jan-20 09:01 PM <__ice9#6039> The rod is usually like 30-50% optical to optical or so iirc depending on chamber geometry and coatings etc 16-Jan-20 09:01 PM <__ice9#6039> Still much better than flashlamps.... 16-Jan-20 09:03 PM flashlamps do produce much higher peak powers 16-Jan-20 09:03 PM but you can't really compare their applications 16-Jan-20 09:03 PM little overlap, if any 16-Jan-20 09:03 PM <__ice9#6039> My statement was about efficiency. 16-Jan-20 09:04 PM oh 16-Jan-20 09:04 PM yeah in that case that's very true 16-Jan-20 09:04 PM <__ice9#6039> I don't have large enough pulse caps to make a ruby laser atm unfortunately. I was thinking about it but it will have to wait. 16-Jan-20 09:04 PM <__ice9#6039> Recommendation is at least 1kJ 16-Jan-20 09:05 PM Chinese beauty machine caps are cheap 16-Jan-20 09:05 PM <__ice9#6039> Hmm? 16-Jan-20 09:05 PM <__ice9#6039> "beauty machine caps"? 16-Jan-20 09:05 PM cheap flashlamp pumped yag lasers with passive q switches 16-Jan-20 09:05 PM as low as $500 on eBay for the whole machine, but the caps are much cheaper if you find the supplier 16-Jan-20 09:05 PM they have power supplies, triggers, and caps in them 16-Jan-20 09:07 PM <__ice9#6039> Hmm yes I have seen the machines, but was not sure where you were finding the caps 16-Jan-20 09:07 PM <__ice9#6039> What is the supplier? 16-Jan-20 09:07 PM I stumbled upon a supplier of parts on alibaba, they gave me a ridiculously long pdf with all the quotes 16-Jan-20 09:07 PM I can send it to you if you want 16-Jan-20 09:07 PM <__ice9#6039> I already have a PSU and trigger that I built for flashlamps 16-Jan-20 09:07 PM <__ice9#6039> Yes (!) 16-Jan-20 09:07 PM <__ice9#6039> ^^ that would be very interesting 16-Jan-20 09:07 PM <__ice9#6039> I've already found the cheapest large pulse caps on eBay but am curious 16-Jan-20 09:07 PM <__ice9#6039> But my largest pulse cap is only like 150J 16-Jan-20 09:10 PM sent in PM 16-Jan-20 09:20 PM <__ice9#6039> Thanks! Checking 17-Jan-20 10:45 PM <__ice9#6039> Tantalum crucible dish— https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F223464733591 18-Jan-20 01:55 PM https://www.ebay.com/itm/Nupro-2-75-Conflat-304-24VFBG-6T-High-Vacuum-Butterfly-Valve-1-1-4-Lightly-Used/333484501803 18-Jan-20 01:55 PM cute valve 19-Jan-20 04:03 PM OMG, that's so damn cute. 19-Jan-20 04:36 PM Awww 19-Jan-20 04:36 PM https://www.ldsvacuumshopper.com/pnuhvgava1od.html 19-Jan-20 06:28 PM For all your DIY accelerating voltage needs: 19-Jan-20 06:28 PM https://www.ebay.com/itm/Hitek-Power-Mh-60-Series-MH60-503-03-High-Voltage-Versatile-Power-Supply/172863449515 19-Jan-20 06:28 PM https://www.ebay.com/itm/APPLIED-KILOVVOLTS-HP-SERIES-HP020PZZ337-HIGH-VOLTAGE-POWER-SUPPLY/274103253624 19-Jan-20 06:28 PM These are particularly good ^ 19-Jan-20 06:28 PM If you can find an Applied Kilovolts supply in the voltage and current rating you need, the datasheets are always available and they're almost always sub-$100 19-Jan-20 06:28 PM https://www.ebay.com/itm/Matsusada-J4-3N-LXSH-High-Voltage-Power-Supply/333113876979 19-Jan-20 06:28 PM For low voltages you can more often find Matsusada supplies 19-Jan-20 06:28 PM Also very nice and also often cheap 19-Jan-20 06:28 PM Bertan are in the same category, but much much older 19-Jan-20 06:28 PM Spellman are nice, but it's a good idea to avoid Spellman supplies you can't find the datasheets/manuals for - if it's custom or unavailable, Spellman will not give you any info 20-Jan-20 09:47 AM I don't see a manual for the applied kilovolts, also see a better price from a U.S. based seller... At least better shipping to U.S. 20-Jan-20 09:55 AM Ah, nevermind saw some pdf you posted in #general 20-Jan-20 10:41 PM https://www.amazon.com/dp/B07WMMSNYN/ 20-Jan-20 10:44 PM not very nice x-ray machines, but can't beat $520 new if you need to quickly blast something 20-Jan-20 10:44 PM they can get down to $300-350 on ebay/alibaba/aliexpress 20-Jan-20 11:45 PM Omg I need one right now 20-Jan-20 11:53 PM for that price range you could just buy an older digital xray system intended for dental use...if you are willing to wait and hunt around on ebay/craigslist 20-Jan-20 11:53 PM not sure which option you are less likely to hurt yourself or others with though...so please do not take that as a suggestion just an observation 21-Jan-20 12:03 AM My workshop is lined in 1950's lead paint, no worries 21-Jan-20 12:04 AM not sure if that's how it works... 21-Jan-20 12:04 AM paint over the lead with some Cd yellow just to make sure the X-rays won't be what gets you :P 21-Jan-20 12:05 AM Just got a response from a local gas supplier, they said "It doesn't really matter whether you order 40 liters or 2 liters of neon, the price will be pretty much the same, and that is - high. It's a special gas and they fill and seal new tanks at the factory" 21-Jan-20 12:05 AM Fun. 21-Jan-20 12:06 AM so go for the 40l option 21-Jan-20 12:06 AM But at least they're understanding of why I'm trying to order a tiny amount 21-Jan-20 12:06 AM what to you need it for anyways? 21-Jan-20 12:06 AM Nixies! 21-Jan-20 12:06 AM among other things 21-Jan-20 12:06 AM And see, while I could order a 40l tank, that'd be a soul-haunting expense I could never ever justify 21-Jan-20 12:07 AM make a video of you inhaling it and then saying something funny, that should pay for your expenses 21-Jan-20 12:08 AM helium is a lot cheaper 21-Jan-20 12:08 AM I can get a 10l tank at 10 bar for ~$35 21-Jan-20 12:08 AM by "tank" I mean "fire extinguisher with a funny nozzle" 21-Jan-20 12:08 AM lol, someone's ripping you off there 21-Jan-20 12:09 AM it's super cheap comparatively 21-Jan-20 12:09 AM got my 10l@200 bar for 75 21-Jan-20 12:09 AM I'll never use more than 100l of helium lol 21-Jan-20 12:09 AM oh and yeah larger tanks are a lot cheaper too 21-Jan-20 12:09 AM I can get a 40l tank for $170 21-Jan-20 12:09 AM or a full 200 bar 5 liter for $75 21-Jan-20 12:23 AM I think your suppliers are breathing a bit too much of their own product 21-Jan-20 12:24 AM they're just different prices I've found 21-Jan-20 12:24 AM this includes the tank btw 21-Jan-20 12:24 AM without the tank a 10l fill(150-200 bar) is $41, and 40l fills vary from $115 to $267 depending on purity 21-Jan-20 12:24 AM $267 being 6.0 UHP 21-Jan-20 12:24 AM including delivery(somehow) 21-Jan-20 12:30 AM and Ne would be? 21-Jan-20 12:30 AM not available here, one supplier is still calculating the prices 21-Jan-20 12:30 AM closest is in Russia, ~$450-500 for a 2-5l tank incl shipping 21-Jan-20 12:31 AM ...at what pressure? 21-Jan-20 12:31 AM 150 bar I'm assuming 21-Jan-20 12:31 AM so like a buck per standard liter 21-Jan-20 12:31 AM bit over 21-Jan-20 12:31 AM there's a dude selling 10l of neon for about the same price 21-Jan-20 12:32 AM just wait until you need some xenon 21-Jan-20 12:32 AM 1l single-use "deodorant can" tank @ 10 bar + valve 21-Jan-20 12:32 AM oh he sells xenon too 21-Jan-20 12:32 AM in 150 bar tanks 21-Jan-20 12:32 AM but... the price is ouchy 21-Jan-20 12:32 AM $320 for the same disposable can 10l tank 21-Jan-20 12:32 AM here it goes for ~100 bucks per standard liter 21-Jan-20 12:32 AM from the big suppliers, that is 21-Jan-20 12:33 AM which means... it's a lot cheaper here? 21-Jan-20 12:33 AM he also sells 50 bar 2l tanks(so 100 sl), I'm guessing the same price per liter 21-Jan-20 12:33 AM also krypton and k4 mix 21-Jan-20 12:34 AM well it's Linde, they have horrendous prices here 21-Jan-20 12:35 AM still nowhere near as expensive as pure helium 21-Jan-20 12:35 AM and... I mean, pure helium is nice and all, it glows purple 21-Jan-20 12:35 AM but I want that hene glow 21-Jan-20 07:33 AM Linde has horrendous prices here too! Hahahah. But sometimes they are the only choice. The common gasses they are reasonable if you are ordering huge quantities, but single specialty things, better get your wallet open wide! 21-Jan-20 06:23 PM https://hgrinc.com/productDetail/Pumps/Used-Varian-Diffusion-Pump/12191790112/ 22-Jan-20 12:29 AM Y'know what I don't like? eBay listings that pluralize the item name and show multiple of the item, but list them as N quantity available. 22-Jan-20 03:40 AM <__ice9#6039> The last time I was buying inert gases, none of the welding shops or gas suppliers in this city would even sell to me-- it was all restricted to existing helium customers. 22-Jan-20 03:40 AM <__ice9#6039> I could get pretty much anything on their standard menu except helium 22-Jan-20 02:38 PM @__ice9 where are you located? 22-Jan-20 03:37 PM <__ice9#6039> Chicago 23-Jan-20 07:42 AM https://www.ebay.de/itm/163951483995 23-Jan-20 04:22 PM Oh man, that looks so tempting 23-Jan-20 04:22 PM But that price 23-Jan-20 04:33 PM Ooh 23-Jan-20 04:33 PM https://www.ebay.com/itm/Swagelok-SS-4BMG-VCR-SS-Metering-Bellows-Sealed-Valve-839877-1-4-in-Male/111679373774 23-Jan-20 06:24 PM Pfft, VCR fittings, I at least want DVD fittings, if not Blu-Ray fittings 23-Jan-20 07:34 PM I just use streaming fittings these days 23-Jan-20 09:33 PM <__ice9#6039> Some proprietary nonsense https://www.chromforum.org/viewtopic.php?t=16099 23-Jan-20 09:36 PM It's really common in gas work 23-Jan-20 09:36 PM Where it's not 1x10-^, it's 1x10^ 24-Jan-20 01:19 PM https://www.ebay.com/itm/303438803534 looks like the same series as my dewar, so ~200 days holding time, maybe even more! 24-Jan-20 01:19 PM https://www.ebay.com/itm/274206721208 Also there's this one, sexy but expensive 24-Jan-20 01:37 PM https://www.ebay.com/itm/183761357722 24-Jan-20 01:37 PM Aren't those enclosed metal ones better? 24-Jan-20 01:37 PM The ones without a leaky lid 24-Jan-20 01:37 PM https://www.ebay.com/itm/MVE-Cryogenics-DURA-LO-II-Liquid-Nitrogen-Dewar-Cylinder/124013364509 24-Jan-20 01:37 PM this kind 24-Jan-20 01:37 PM (ignore the price, just reference) 24-Jan-20 01:39 PM they are, but when buying you can't ignore the price 24-Jan-20 01:39 PM heh 24-Jan-20 01:39 PM What's their holding time? 24-Jan-20 01:40 PM I have zero experience with those 24-Jan-20 01:40 PM https://www.ebay.com/itm/283512272837 This looks like a Ge(Li) 24-Jan-20 01:40 PM I like that it just says it's a "pipe" 24-Jan-20 01:40 PM ... essentially is 24-Jan-20 01:41 PM what do you mean? 24-Jan-20 01:41 PM warm GeLi on eBay = dead GeLi 24-Jan-20 01:42 PM warm GeLi = dead GeLi 24-Jan-20 01:42 PM but not dead preamp, dewar and whatnot 24-Jan-20 03:24 PM https://www.ebay.com/itm/NOR-CAL-Products-ESV-2002-NWB-Manual-Angle-Valve-NW-25-Flanges/372924297635 24-Jan-20 05:18 PM https://www.ebay.com/itm/MDC-640004-Quad-Solid-Conductor-2-3-4-CF-Flange-Feedthrough-MC-154/283751126677 25-Jan-20 02:54 AM <__ice9#6039> https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F223373519919 This stuff is good for furnace linings and casting molds 25-Jan-20 02:54 AM <__ice9#6039> It can be packed with bubble alumina or bubble zirconia (or even just foam spheres that vaporize on heating to leave voids) to decrease thermal conductivity and weight and material use. 25-Jan-20 10:11 PM https://www.ebay.com/itm/NRC-ADM-300-Multi-Function-Survey-Meter-BP-100-Beta-Probe-AP-100A-Alpha-Probe/293438164538 25-Jan-20 10:11 PM Neat deal 26-Jan-20 12:52 AM https://www.ebay.com/itm/362695522414 26-Jan-20 12:52 AM https://www.ebay.com/itm/273929402685 26-Jan-20 02:58 AM <__ice9#6039> I am interested in buying a small amount of Takeda or equivalent carbon molecular sieve type 3A. 26-Jan-20 02:58 AM <__ice9#6039> I am also interested in a larger amount of carbon molecular sieve 4A. 26-Jan-20 05:59 PM https://www.go-dove.com/events/441 26-Jan-20 05:59 PM There's quite a few pumps, vacuum ovens and a lot of general lab equipment all with a starting bid of $25 near Austin Texas 26-Jan-20 05:59 PM Bound to be a few good deals in there if you can go and pick up locally 27-Jan-20 03:45 AM <__ice9#6039> Yes that site requires local pickup for everything I have seen 27-Jan-20 07:15 AM That is typical of equipment auctions. Great deals, but you gotta come get it out of here. 27-Jan-20 07:28 AM Well if you see enough things you like, it might be worth it to ship everything through their package and freight shipping service. Prices will be a bit high so it's only really worth it for lighter equipments and multiple lots, unless you get a crazy deal 27-Jan-20 07:28 AM But you never know, some people on here might live close enough to justify a drive over to that site 28-Jan-20 10:33 AM https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F153812017336 couple of NIM HV bias supplies just went up for sale at a pretty nice price.. just snagged one myself 28-Jan-20 10:34 AM goddamn it 28-Jan-20 10:34 AM shipping will kill the good offer 28-Jan-20 10:40 AM F 28-Jan-20 10:46 AM wow even shipping to me in New York is like 40 bucks almost 28-Jan-20 10:47 AM only says about $16 to Southern California...maybe message them asking about if it would fit in a flat rate box 28-Jan-20 11:04 AM Hmm, what sort of ripple would those have? 28-Jan-20 11:04 AM in the range of mVpp 28-Jan-20 11:04 AM https://groups.nscl.msu.edu/nscl_library/manuals/eggortec/459.pdf 28-Jan-20 11:05 AM These could be used for, like a everhart thorley detector bias? 28-Jan-20 11:06 AM oh sure they're made exactly for stuff like that 28-Jan-20 11:06 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-080B3.png 28-Jan-20 11:09 AM Oh, hmm... I've been a bit depressed about my progress with physical/lab stuff, so I'm on the edge of thinking I should go for one 28-Jan-20 11:09 AM https://giphy.com/gifs/pTQUOfSmjo2hG 28-Jan-20 11:10 AM How about stage bias in a plasma chamber? 28-Jan-20 11:10 AM I guess usually the stage/sample is part of the circuit? 28-Jan-20 11:10 AM Hrmm 28-Jan-20 11:10 AM Been up too long with no sleep 28-Jan-20 11:10 AM Maybe for drawing plasma in from a remote ICP source? 28-Jan-20 11:24 AM would be wary about using it in any aggressive environments like around a plasma.. it's really meant for putting a fixed bias on a thing that isn't trying to pull it hundreds/thousands of volts in some other direction entirely 28-Jan-20 11:24 AM extraction supplies are usually rather beefier 28-Jan-20 11:47 AM well I still remember my credit card # so I pulled the trigger 28-Jan-20 12:13 PM so while i'm giving up all my good deals, this seller has a bunch of the same kind of RGA (+ sensor head!!) that szeloof and I have, and I grabbed another to try and debug my weird filament issues 28-Jan-20 12:13 PM https://www.ebay.com/sch/m.html?_odkw=leybold+inficon&_ssn=ivrsholdings&_armrs=1&_osacat=0&_from=R40&_trksid=p2046732.m570.l1313.TR0.TRC0.A0.H0.Xleybold+inficon+tsp.TRS1&_nkw=leybold+inficon+tsp&_sacat=0 28-Jan-20 12:13 PM talked them down to $150 for one >.> 28-Jan-20 12:13 PM I can't see anything from him 28-Jan-20 12:14 PM oh, peculiar 28-Jan-20 12:14 PM have to set shipping to the US 28-Jan-20 12:14 PM 'Inficon Transpector TSP' may pull it up, they're all $250-$270 28-Jan-20 12:14 PM ahh 28-Jan-20 12:14 PM mind, they're very fiddly, the software is windows 98 only, and they really want a hardware serial port, but... 28-Jan-20 12:15 PM well, it's unlikely I can afford to ship it cheaply even if I get it for $150 28-Jan-20 12:17 PM some of them also have very smashed-up-looking frontends, where the filament current feeds connect into the ionizer, which'll necessitate replacement alumina ceramics, too, so be mindful 28-Jan-20 12:20 PM is that $150 shipped or $150+25 shipping? 28-Jan-20 12:21 PM oh, i guess $150 shipped 28-Jan-20 12:21 PM Where did you find the software? It's TWare32 right? 28-Jan-20 12:21 PM yup 28-Jan-20 12:21 PM courtesy of this sketchy directory listing http://i-support.sakura.ne.jp/Software/ 28-Jan-20 12:23 PM hmm...maybe i can go check them out and grab one 28-Jan-20 12:23 PM Santa Ana is like 15mins away 28-Jan-20 12:23 PM i'll report the condition mine shows up in when it gets here 28-Jan-20 12:28 PM That happens to me too with some sellers 28-Jan-20 12:28 PM Ebay shows them having listings and gives 4 top pics or something at their profile page, but "no listings found" when clicking the store or their listed items. 28-Jan-20 12:54 PM @rfs that happened to me recently after ordering something to be shipped to India... I was seeing an item, then clicked see other items by seller only to see nothing listed... Which was obviously wrong, ended up having to set my shipping destination back to the US at the top right (i think) of the screen 28-Jan-20 12:54 PM So I have a TSP TC100... Any idea what the diff or benefit of those th100 are? 28-Jan-20 12:54 PM I also don't know if my current unit works or not 28-Jan-20 12:54 PM So wouldn't mind a reasonably priced parts backup 28-Jan-20 12:54 PM Also, I was told by Inficon " The TC100 that you have is too old to work with TWare32 software.  Sorry, but we do not have software available for you.  TranspectorWare (I am told) is the name of the software that was used for this RGA, but we do not have copies to sell and not sure it would even work with today's operating systems." 28-Jan-20 01:07 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screenshot_20200128-130623-52F7B.png 28-Jan-20 01:07 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screenshot_20200128-130603-C112B.png 28-Jan-20 01:07 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screenshot_20200128-130455-FD078.png 28-Jan-20 01:07 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screenshot_20200128-130441-38F3F.png 28-Jan-20 01:07 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screenshot_20200128-130420-5A8C6.png 28-Jan-20 01:07 PM That's as much as I can figure might be the difference, of that's the right model suffix correlation 28-Jan-20 01:07 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screenshot_20200128-130911-27F66.png 28-Jan-20 01:07 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screenshot_20200128-130922-A82E6.png 28-Jan-20 01:07 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screenshot_20200128-130938-2EB30.png 28-Jan-20 01:07 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screenshot_20200128-130950-51917.png 28-Jan-20 01:07 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screenshot_20200128-131002-86C3E.png 28-Jan-20 01:07 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screenshot_20200128-131014-B7A5D.png 28-Jan-20 01:36 PM <__ice9#6039> Have had solely positive experiences with svcstore on eBay yes 29-Jan-20 01:48 AM anyone got a (source for) copper tubing with 80-120 mm ID and 3-5mm wall thickness? I need a ~20 cm long piece of that 29-Jan-20 09:52 AM <__ice9#6039> Just buy copper pipe by the inch 29-Jan-20 09:52 AM <__ice9#6039> I did that for making an extremely questionable fluoride distillation reactor a long time ago 29-Jan-20 09:52 AM <__ice9#6039> In the U.S. it comes in 3", 4", etc nominal diameters, and then there are matching endcaps that can be soldered onto it (they are also useful as water coolable crucibles if you solder some copper tubing in a spiral around them) 29-Jan-20 09:52 AM <__ice9#6039> If working with fluorides, pure lead has some advantages as a solder relative to tin based formulations, but I digress 29-Jan-20 10:18 AM 40W 810nm fiber coupled laser module https://www.aliexpress.com/item/32839472036.html 29-Jan-20 09:03 PM Anyone have any 0.05% ruby rods in poor condition they’d sell for very cheap? I want to try some stuff. Only need 5mm length and 3mm diameter, larger is fine. Happy with broken ones too 30-Jan-20 05:22 AM and diamonds 30-Jan-20 05:22 AM will accept broken diamonds 30-Jan-20 07:24 PM https://www.ebay.nl/itm/264617573051 - feel free to make offers, price was chosen by looking at sold and current listings 30-Jan-20 08:37 PM That price is reasonable. A teaching lab at my university just had a bunch repaired and opted to spend $2500 each just for the repair rather than replace. 30-Jan-20 08:37 PM And we still use them in the real lab too 31-Jan-20 12:07 AM https://www.ebay.com/itm/254476488883 Tungsten shielded big brother of the ludlum 44-9 31-Jan-20 12:07 AM with a spare tube! 31-Jan-20 12:07 AM great deal 31-Jan-20 12:36 AM https://page.auctions.yahoo.co.jp/jp/auction/j610142011 31-Jan-20 12:36 AM holy cryopump 31-Jan-20 12:36 AM only $1400 31-Jan-20 04:08 AM oh jeez 31-Jan-20 04:08 AM how funny it would be to make ice cream in it 31-Jan-20 05:59 AM Depending on whatever process it was used in you might have some interesting flavors added heh... 31-Jan-20 05:59 AM https://www.ebay.com/itm/LUDLUM-MODEL-3-RADIATION-METER-WITH-44-9-PROBE/283761211654 31-Jan-20 05:59 AM probably worth a minimum bid at-least 31-Jan-20 05:59 AM I just got a model 3 with 44-9 as-is for 150 from ePay tho through make offer so yea. 31-Jan-20 09:21 AM is there a chart anywhere of what probes the various ludlum models are capable of working with? 31-Jan-20 09:23 AM there is, on the ludlums page of the probe 31-Jan-20 12:44 PM https://www.ebay.com/itm/OXFORD-Detector-x-ray-Parts-51-4104914-51-4105854-792/174174386367 31-Jan-20 12:44 PM I found this SDD while wandering around on ebay I bet the seller has no idea it's an SDD and is lowball-able 31-Jan-20 01:00 PM https://www.ebay.com/itm/274242241022 31-Jan-20 01:10 PM that cryopump is tempting 31-Jan-20 01:16 PM <__ice9#6039> @Spirit they are located in Shanghai and have a detailed sensor test report as one of the photos. Pretty sure they know what it is. 31-Jan-20 01:17 PM "no copy, no fake" 31-Jan-20 01:17 PM and just a part number 31-Jan-20 01:18 PM <__ice9#6039> Tbf maybe the report was packed in with it 31-Jan-20 01:18 PM <__ice9#6039> Hmm you can make a pretty decent LN2 transfer hose out of a number of layers of successively wider PTFE or FEP tubing nested concentrically and then stuffed into some thick pipe insulation tubing. 31-Jan-20 01:18 PM <__ice9#6039> Cryo flexible polymers basically PTFE/FEP/PVA. Some others are still usable but exhibit brittle fractures if overloaded. 31-Jan-20 01:18 PM <__ice9#6039> No idea what the pinout from that SDD would be, though 31-Jan-20 02:00 PM https://www.ebay.com/itm/132327507310 31-Jan-20 02:01 PM I'll take it! Local pickup. 31-Jan-20 02:04 PM we just use rubber tubing for LN2 transfer 31-Jan-20 02:04 PM if you bump it it will shatter 31-Jan-20 02:04 PM I think 31-Jan-20 02:04 PM IDK 31-Jan-20 02:04 PM haven't bumped it 31-Jan-20 02:06 PM latex seems pretty common 31-Jan-20 02:06 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-C35E8.png 31-Jan-20 02:09 PM <__ice9#6039> Hmm that is a particulate contamination XRF -- no wonder it is so huge 31-Jan-20 02:09 PM <__ice9#6039> https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F123346334252 31-Jan-20 02:11 PM oh dang 31-Jan-20 02:31 PM Woah I really want to low ball that thing 31-Jan-20 02:32 PM Si-PIN though, not SDD 31-Jan-20 02:32 PM Yeah I know 31-Jan-20 02:32 PM I've used that exact detector before 31-Jan-20 02:32 PM In an XRF experiment 31-Jan-20 02:32 PM It's good! Wonder if Amptek will give pinout 31-Jan-20 02:33 PM From what I've seen they're pretty friendly except the software? 31-Jan-20 02:34 PM I can obtain the software... 31-Jan-20 08:10 PM https://www.govdeals.com/index.cfm?fa=Main.Item&itemid=22522&acctid=2863 31-Jan-20 08:10 PM @Metanoic ^ 31-Jan-20 08:14 PM https://www.ebay.com/itm/323368094722 31-Jan-20 08:14 PM Just... MCPs...? 31-Jan-20 08:14 PM huh 31-Jan-20 08:15 PM Yea 31-Jan-20 08:15 PM 12um channels 31-Jan-20 08:15 PM 500V 01-Feb-20 06:12 PM A bit of a desperate call here 01-Feb-20 06:12 PM Does anyone have an MDP 5011(or any other turbodrag, really) they'd be willing to trade for other things, or sell for less than market prices? 01-Feb-20 06:12 PM I can't afford to spend $700-1600 on it and I really don't want to risk destroying my only turbomolecular pump when experimenting with glass 01-Feb-20 06:12 PM I'm aware of how slow it is, but it's the only pump I can safely use with glass that can implode and vent to atmosphere instantly 01-Feb-20 06:42 PM <__ice9#6039> Huh interesting. I don't have one, no, but I notice that the blades are all very short and stubby. No room to make salad. 01-Feb-20 06:42 PM <__ice9#6039> Very slow pumping rate though 01-Feb-20 06:43 PM It's just a blade set 01-Feb-20 06:43 PM To push the gas into the drag stage 01-Feb-20 06:43 PM It's all drag, no turbo. 01-Feb-20 06:47 PM have you tried putting in some obscenely low offers in on eBay? 01-Feb-20 06:47 PM think it's worth it? 01-Feb-20 06:47 PM never know until you try 01-Feb-20 06:47 PM i was eyeing the ones listed in Phoenix, AZ but do not need to spend any more money on that sorta thing for awhile...or a controller for it 01-Feb-20 06:48 PM 5011s? 01-Feb-20 06:48 PM seems like they have a bunch of them 01-Feb-20 06:48 PM yes 01-Feb-20 06:48 PM with cables 01-Feb-20 06:48 PM oh yeah I see those 01-Feb-20 06:48 PM https://www.ebay.com/itm/Alcatel-Model-MDP5011-Turbo-Drag-Pump-with-Cable/274234983951 01-Feb-20 06:48 PM they have funny flanges 01-Feb-20 06:48 PM the controllers are stupid simple to build, an arduino, two transistors and 20 minutes 01-Feb-20 06:48 PM it's just a single pole AC motor 01-Feb-20 06:49 PM ahh well i still do not need to spend money on that kinda toy at the moment 01-Feb-20 06:49 PM <__ice9#6039> What is the goal of using glass viewports? Just curious. 01-Feb-20 06:49 PM to see into your chamber I'm guessing 01-Feb-20 06:50 PM <__ice9#6039> I mean vs acrylic or polycarbonate 01-Feb-20 06:50 PM outgassing 01-Feb-20 06:50 PM <__ice9#6039> Better for UHV ah I see 01-Feb-20 06:50 PM <__ice9#6039> You can always coat with silica... but the coating will rarely be of good quality 01-Feb-20 06:50 PM <__ice9#6039> Huh oh or maybe sputter coat glass onto plastic 01-Feb-20 06:50 PM <__ice9#6039> Wonder whether that improves it at all 01-Feb-20 06:52 PM also lasers 01-Feb-20 06:53 PM Quartz viewports are useful 01-Feb-20 06:53 PM <__ice9#6039> Something similar works for metals/ceramics https://www.silcotek.com/silcod-technologies/silcoguard-high-purity-coating 01-Feb-20 06:53 PM <__ice9#6039> That's silicon metal though 03-Feb-20 12:01 AM https://www.ebay.de/itm/143465472690 03-Feb-20 12:01 AM this is the funniest dewar I've seen so far 03-Feb-20 12:01 AM the staff of spectroscopy 03-Feb-20 12:02 AM neat 03-Feb-20 12:06 AM I wager I know what that's for 03-Feb-20 12:06 AM Well spectroscopy 03-Feb-20 12:07 AM a good way to kill your window 03-Feb-20 01:29 AM 900 euro 03-Feb-20 01:29 AM it that the lower end of the price range? 03-Feb-20 01:30 AM looks like it 03-Feb-20 01:30 AM esp. since it's n type with what looks like a good window 03-Feb-20 01:30 AM I'm gonna say down to 10, maybe 5 keV 03-Feb-20 03:54 AM hmm ok 03-Feb-20 03:54 AM so I know now what I would have to pay 03-Feb-20 03:54 AM no 50 euro bargains out there I guess 03-Feb-20 05:03 AM if you're lucky ^^ 03-Feb-20 05:03 AM did you ask around? 03-Feb-20 05:09 AM not yet 03-Feb-20 05:09 AM but I'm not that well connected 03-Feb-20 05:09 AM besides this discord I mean!11 03-Feb-20 05:18 AM XD 03-Feb-20 03:55 PM I talked to the seller. He is Russian. This thing is huge, and very tricky to send overseas. 03-Feb-20 08:49 PM <__ice9#6039> https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F362844976792 This seller has fantastic items in general 03-Feb-20 08:55 PM That looks like a nice bypass capacitor 03-Feb-20 08:55 PM :^) 04-Feb-20 10:42 PM I was thinking more like the plate coupling cap from one of those old million watt border broadcast stations. 05-Feb-20 12:20 AM Anyone want a chamber from Livermore? https://sfbay.craigslist.org/eby/bfs/d/pleasanton-pfeiffer-balzers-high/7055043694.html 05-Feb-20 09:07 PM Pass. Hahahaha. 05-Feb-20 11:41 PM https://www.ebay.com/itm/Kurt-Lesker-QF250-TK-ISO250-Tee/122760568324 05-Feb-20 11:41 PM big one :) 05-Feb-20 11:41 PM @Mason_Yu this could sit atop your turbo haha 07-Feb-20 01:58 PM Hmm, I might actually need something like that sometime in the future, but not for the turbo... 07-Feb-20 02:13 PM lol we recently paid almost 5k for something very similar 07-Feb-20 02:15 PM For hobbyists the main problem is just adapting this down to something usable and more commonly available 07-Feb-20 02:15 PM The seller of the "dead" turbo says he has a controller for it. Asked how much he'd sell them together for 07-Feb-20 02:15 PM Might end up with an EXT255 07-Feb-20 02:18 PM https://www.ebay.com/itm/MDC-AV-050M-VALVE-VACUUM-APPARATUS/274031130847 07-Feb-20 02:18 PM Could be of interest to you? @Spirit 07-Feb-20 02:18 PM Perhaps 07-Feb-20 02:18 PM Not for that price though 07-Feb-20 02:18 PM And it's buyhitek, so it's staying at that price 07-Feb-20 02:19 PM If you cut that price down $100 it's well worth it in my opinion 07-Feb-20 02:19 PM Leak valve and I'm assuming a precision bellows or something 07-Feb-20 02:20 PM Yeah, that leak valve can flow quite a bit I believe, looks very similar to the other one I have 07-Feb-20 02:20 PM You undo the screw at the top of the leak valve and the pressure on the sapphire can be almost completely lifted. It's an uncontrolled leak at that point but it means you can fill your chamber with it 07-Feb-20 02:22 PM if that leak valve is in good condition, $300 is a steal. But it probably won't be 07-Feb-20 02:22 PM I can't imagine a hobbyist use for that ISO cross unless someone goes for a diffusion pump? 07-Feb-20 02:22 PM or if you're trying to put something huge in vacuum I guess 07-Feb-20 02:23 PM Mason has a gigantic turbopump 07-Feb-20 02:24 PM ah 07-Feb-20 02:24 PM if anyone sees any interesting 8" conflat flanges with mounting holes on the vacuum side... would be interested 07-Feb-20 02:24 PM need to attach a bunch of stuff and cnc time is rough right now 07-Feb-20 02:27 PM like tapped holes? 07-Feb-20 02:27 PM Yeah 07-Feb-20 02:27 PM Umm, you have access to a manual mill right? 07-Feb-20 02:28 PM drill press and a hand tap might even suffice on a standard blank if you're careful 07-Feb-20 02:28 PM Is it super complicated? Just a few holes shouldn't be too bad. 8" blanks are comparatively cheap 07-Feb-20 02:29 PM Not complicated but that's still a couple hours of work 07-Feb-20 02:29 PM I also am not a huge fan of drilling stainless 07-Feb-20 02:29 PM nor tapping it 07-Feb-20 02:32 PM It's really not that bad, get a good sharp drill and a new tap, plenty of tap magic 07-Feb-20 02:32 PM https://www.amazon.com/10016E-EP-XTRAOZ-FRIENDLY-CUTTING-FLUIDS/dp/B00DHMHSGM 07-Feb-20 02:32 PM I love this stuff 07-Feb-20 03:03 PM <__ice9#6039> Use at least a cobalt steel drill bit 07-Feb-20 03:03 PM <__ice9#6039> Or a solid carbide bit if you don't mind the brittleness. Only usable in a drill press. Wear more PPE than usual. 07-Feb-20 03:03 PM <__ice9#6039> Will explode if used in a hand drill 07-Feb-20 03:04 PM High speed steel works too, go slow and peck 07-Feb-20 03:04 PM <__ice9#6039> That's so tedious and awful for the bit though 07-Feb-20 03:04 PM <__ice9#6039> Also all this stuff should be water cooled if it's deep 07-Feb-20 03:09 PM Everything here was done manually with HSS tools: the boring, the milling of the o-ring groove, the drilling and (not shown) the tapping 07-Feb-20 03:09 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Cathode_Plate_Back_-3292C.jpg 07-Feb-20 04:56 PM <__ice9#6039> Nice 08-Feb-20 02:13 AM manually? 08-Feb-20 02:13 AM like holding the drill manually? jk 08-Feb-20 02:13 AM but how awesome would that be 08-Feb-20 07:41 AM https://www.ebay.com/itm/324063655967 08-Feb-20 07:47 AM expensive dewer with some odd electronic thingamabob on top ;P 08-Feb-20 07:48 AM expensive electronic thingamabob with odd coffee pot 08-Feb-20 08:11 AM lol 08-Feb-20 10:44 AM https://www.ebay.com/itm/223897088824 08-Feb-20 10:44 AM Another okayish high speed camera 08-Feb-20 10:44 AM I would not buy it for more than $300-450 08-Feb-20 10:59 AM I’m really happy with my $300 FLIR blackfly 08-Feb-20 12:04 PM <__ice9#6039> There are cell phones faster than this, unless you really abandon resolution 08-Feb-20 12:04 PM <__ice9#6039> Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screenshot_20200208-140413-76767.png 08-Feb-20 12:04 PM <__ice9#6039> Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screenshot_20200208-140622-A4925.png 08-Feb-20 12:04 PM <__ice9#6039> I was so enamored with this feature, but Huawei's OS modifications for permissions-bypassing APIs are very questionable and they have a historically restrictive attitude toward device root use. I wish Google would not be so indolent with the Pixel lineup. Clearly just banking on their Fi MVNO to retain repeat hardware customers. 08-Feb-20 12:04 PM <__ice9#6039> But if you had a choice between a $3000 camera and a $1200 phone with a better camera, the phone may actually be a superior choice in some situations-- depending on ability to use the functionality on triggers, need for better resolution at a given frame rate vs extreme frame rate at tiny resolution, etc 08-Feb-20 12:36 PM Huawei's 7kfps is a lie @__ice9 08-Feb-20 12:36 PM It's interpolated from 960 using "A I" 08-Feb-20 12:36 PM And the 960 is a tiny burst of I think 1 or 2 gigabits at super low resolution( On the Sony sensor 08-Feb-20 12:36 PM Actual, modern high speed cameras are much more expensive 08-Feb-20 12:36 PM https://www.ebay.com/itm/NAC-Image-Technology-Memrecam-GX-1-Plus-High-Speed-Digital-Camera-System/183467511586 08-Feb-20 12:36 PM This one, for example. It's.... actually worth it. 08-Feb-20 12:36 PM (if you need one) 08-Feb-20 12:36 PM Ah! 08-Feb-20 12:36 PM https://www.ebay.com/itm/SPEEDCAM-WEINBERGER-VISARIO-G2-high-speed-camera-1500-1c/323243493147 08-Feb-20 12:36 PM Here's one. 08-Feb-20 12:36 PM This one is totally worth the asking price. 08-Feb-20 12:36 PM It's clunky, it's a bit hard to use, but I owned the military version of it a while ago, and it's great. 08-Feb-20 12:36 PM I also have dumped the firmware from it and have all the software/passwords. 08-Feb-20 12:36 PM Here's what I shot with it 08-Feb-20 12:36 PM https://www.youtube.com/watch?v=4Lv7DsKfwAk 08-Feb-20 01:11 PM <__ice9#6039> Hmm. You are correct. Apologies for incorrect reference. 08-Feb-20 01:11 PM They're pretty good at tricking people into believing it 08-Feb-20 01:12 PM <__ice9#6039> Excellent interpolation algorithms, but that could be done with any existing video in principle 08-Feb-20 01:12 PM It's a lot easier to interpolate from 960fps than from 24 08-Feb-20 01:13 PM <__ice9#6039> I meant at the same frame rate. 08-Feb-20 01:13 PM <__ice9#6039> Irrespective of which camera was used to capture it. 08-Feb-20 01:14 PM Well yeah, just the results look deceptively good 08-Feb-20 01:47 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/JPEG_20200208_134658-F9DA0.jpg 08-Feb-20 01:47 PM I wonder how pure it is 08-Feb-20 01:50 PM probably not extremely 08-Feb-20 01:51 PM good enough for most, and there's lots of videos on the internet on how to clean it up 08-Feb-20 01:51 PM yup 08-Feb-20 02:03 PM I'm still constantly amazed that you can buy sulfuric acid by the gallon at the store in USA 08-Feb-20 02:03 PM When I was a kid I had to concentrate battery acid and it sucked. shakes fist 08-Feb-20 02:06 PM you can buy HF over the counter 08-Feb-20 02:06 PM not just in the US 08-Feb-20 02:10 PM Sure you can @Spirit 08-Feb-20 02:10 PM Also maybe not that pure, idk, at least some thickener added 08-Feb-20 02:10 PM Oh, you didn't say "just not in the US" 08-Feb-20 02:10 PM Oops, minor dyslexic moment 08-Feb-20 02:14 PM whoops 08-Feb-20 03:03 PM <__ice9#6039> You can buy 10% HF as rust removal pastes if you just need it for etching 08-Feb-20 03:10 PM <__ice9#6039> If you don't mind having an alkali metal salt present, you can use NaF (common) or KF (much better solubility but not as commonly available) and your choice of strong acid to make HF in various concentrations. 08-Feb-20 03:10 PM <__ice9#6039> Alternately, if you need a solution of HF up to about 40% max or so, you can mix e.g. 76% H2SO4 with an excess of finely-ground CaF in a PTFE/PFA/FEP beaker, gently heat to 50-70C or so with brisk magnetic stirring (standard PTFE stir-bar) for 4 hours or so, allow to settle and cool 10-20 minutes, then apply the supernatent to your desired application. Note this will still contain significant H2SO4 because of the limited solubility of CaF (which improves substantially in strong acid, but is still only sparing, hence the long reaction time). The result has better purity at lower concentrations. 08-Feb-20 03:10 PM <__ice9#6039> If you don't mind a buffer being present, you can also just dissolve ammonium bifluoride in water. That will produce a solution of mainly ammonium fluoride and HF. 08-Feb-20 03:10 PM <__ice9#6039> Ammonium bifluoride is often more convenient for etching than HF since it can be stored as a solid. A spill is still hazardous but is less likely to result in severe consequences. 08-Feb-20 03:10 PM <__ice9#6039> HF can also be distilled directly from CaF and H2SO4 at high temperatures using specialized equipment. The process is very hazardous. Not a recommended method. 08-Feb-20 03:10 PM <__ice9#6039> Speaking of useful acids-- This is my favorite commodity chemical supplier in the U.S.: https://www.dudadiesel.com/biodiesel_chemicals.php 08-Feb-20 03:10 PM <__ice9#6039> This one is great for cheap solvents, but less favorable pricing on other things: https://www.rightpricechemicals.com 08-Feb-20 03:10 PM <__ice9#6039> For salts and miscellaneous solid chemicals, HiMEDIA on Amazon is excellent 08-Feb-20 03:10 PM <__ice9#6039> This one is decent if you can't find what you want at a cheaper place. Selection is better, pricing is worse. I got some monoethanolamine from this vendor for an experimental CO2 scrubber a while ago-- https://www.laballey.com 08-Feb-20 07:41 PM HF in rust removers? Haven't seen that. Any particular brand/product? All I've come across is phosphoric products. 08-Feb-20 09:39 PM Whisk Rust contains HF 08-Feb-20 09:39 PM (in the US) 08-Feb-20 11:59 PM https://www.ebay.com/sch/daveshepard/m.html?_nkw=&_armrs=1&_ipg=&_from= 08-Feb-20 11:59 PM This guy is having a firesale again 08-Feb-20 11:59 PM lotsa ludlums 09-Feb-20 12:12 AM <__ice9#6039> @Metanoic @samy as usual, China is very helpful in fulfilling this need 09-Feb-20 12:12 AM <__ice9#6039> Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screenshot_20200209-021052-99BB9.png 09-Feb-20 12:12 AM <__ice9#6039> @Spirit could you link an item from this seller? Searching by seller shows me nothing and that link isn't resolving correctly for me for some reason 09-Feb-20 12:14 AM search by shipping to the us 09-Feb-20 12:14 AM https://www.ebay.com/itm/Lot-of-3-Ludlum-Model-12-Geiger-Counters-Radiation-Detectors/283768765726 09-Feb-20 12:15 AM <__ice9#6039> Oh this one. 09-Feb-20 12:15 AM <__ice9#6039> I am already queued to snipe that auction actually 09-Feb-20 12:15 AM hehe 09-Feb-20 12:15 AM <__ice9#6039> I hope you aren't the 1 bidder 09-Feb-20 12:15 AM <__ice9#6039> That bid was already there yesterday 09-Feb-20 12:15 AM no, he doesn't ship outside 09-Feb-20 12:15 AM <__ice9#6039> Ah I see 09-Feb-20 12:15 AM not automatically anyway 09-Feb-20 12:17 AM <__ice9#6039> I understand if others want to bid against me, particularly as I was not the one who shared the link in the first place 09-Feb-20 12:17 AM <__ice9#6039> But probably worth being aware that they may end up paying a lot more than expected if they do get it 09-Feb-20 12:18 AM #swap-meet Post personal part sales, requests, trade offers, and auctions here. ️️ Auctions posted here are free game for anyone! ️ 09-Feb-20 12:18 AM <__ice9#6039> Yes I said I understand. 09-Feb-20 12:19 AM He has other listings of similar meters 09-Feb-20 12:19 AM And lots of probes 09-Feb-20 12:21 AM <__ice9#6039> Ah lol this is actually a different auction than I thought it was. 09-Feb-20 12:21 AM <__ice9#6039> NVM 09-Feb-20 12:21 AM <__ice9#6039> Yeah I saw some of this stuff while I was looking yesterday though 09-Feb-20 12:21 AM <__ice9#6039> There is quite a lot 09-Feb-20 02:30 AM @__ice9 @Spirit just realize that is the same guy I got my model 12 from for 50 bucks... dead unobtanium tunnel diode in mine. 09-Feb-20 02:30 AM those are OLD model 12s, aka early 70s design pretty much all germanium 09-Feb-20 02:31 AM 'tho I have to add that I have gotten 8 Ratemeters from this guy so far and only one wasn't fixable by cleaning the main selector switch 09-Feb-20 02:31 AM the one I got passed battery test at-least though 09-Feb-20 02:31 AM He clearly sorts through them and figured out which are worse off or better off at minimum 09-Feb-20 02:31 AM but yes you could get lucky 09-Feb-20 02:31 AM still I am just sharing that there is the chance that they could have major problems and if your replacing unobtainable parts with not exact replacements calibration could be weird... 09-Feb-20 02:31 AM the last exact model tunnel diode dead in mine sold for what I paid for my model 12... so just a consideration 09-Feb-20 02:34 AM well, I ordered a couple of times from him, all orders of multiple meters at once and even if he sells them for cheap the amount added up, I guess I got a bit of a special treatment 09-Feb-20 02:35 AM if you want a reliable tool it may be better to keep an eye out for newer equipment unless you want to spend a lot of time and money making it just right 09-Feb-20 02:35 AM nothing wrong with using old tools, just more time might be needed to get them right 09-Feb-20 02:35 AM yep 09-Feb-20 02:35 AM Thus why I am going to keep my 90s era model 3 I got with the 44-9 too... 09-Feb-20 02:35 AM it'll probably be the one I send off to get properly cal'ed someday 09-Feb-20 02:35 AM where as the Model 12 is more of a "this is a cool historical piece" 09-Feb-20 02:35 AM also its got that wider operating voltage for playing around with different detectors 09-Feb-20 02:37 AM no need to cal it somewhere else 09-Feb-20 02:37 AM it's literally just a function generator coupled into the input 09-Feb-20 02:40 AM for counts yes, but that is not true of calibrating with a probe for counts/dosage right? 09-Feb-20 02:40 AM that's calibration of the ratemeter, calibration of a probe is another story 09-Feb-20 02:40 AM I mean... why would ludlum say they cal with CS-137 if its not necessary? seems like an expensive error prone step to include if its not necessary? 09-Feb-20 02:40 AM right... thats what I mean by sending one out to get calibrated 09-Feb-20 02:41 AM ah, ok ^^ 09-Feb-20 02:41 AM I'd send the model 3 and whatever probe, probably the 44-9 out to get calibrated together 09-Feb-20 02:41 AM gotcha 09-Feb-20 03:10 AM https://www.ebay.com/itm/MDC-High-Vacuum-Research-Chambers-Set-Two-4-Ways-4-1-2-Flange/202900344364 09-Feb-20 03:10 AM Interesting thing 09-Feb-20 03:10 AM some good conflat and feedthroughs though! 09-Feb-20 09:37 AM https://www.ebay.com/itm/Huntington-4-Way-High-Vacuum-Research-Chamber-6-Flange-Stainless-No-Return/202900857919 09-Feb-20 09:37 AM That person has quite a bit of stuff it seems... not sure on condition of the knife edges tho 09-Feb-20 10:54 AM Lotsa RED and YELLOW tags on those Ludlums the dude is selling 09-Feb-20 11:01 AM yeah those might be some 09-Feb-20 11:01 AM red flags 09-Feb-20 11:03 AM lol 09-Feb-20 11:03 AM Just thinking usual aviation tag system 09-Feb-20 11:03 AM RED = scrap, Yellow = Repairable, but not fit for use as is. Green = 100% usable 09-Feb-20 11:25 AM Any good way to redo knife edges? Our shop says they’ve sometimes just surfaced and then redone the flange, making it overall a little thinner 09-Feb-20 11:26 AM yea that is probably the only full-proof way 09-Feb-20 11:26 AM just cut it all back a bit 09-Feb-20 11:26 AM till the nicks are gone 09-Feb-20 11:29 AM You also have to really mangle the knife edge before it matters above -8 09-Feb-20 12:12 PM <__ice9#6039> @Conmega yeah that's why I realized that actually isn't the same auction I was targeting. Those ones are dead. 09-Feb-20 12:12 PM <__ice9#6039> You can also just buy a calibration source. As long as you keep correct records, you can adjust properly for the decay over time. 09-Feb-20 12:12 PM <__ice9#6039> I agree regarding knife edges. Depending on your bake-out procedure, indium foil overlays (reusable) may be an option as well. 09-Feb-20 12:49 PM Oh yeah I guess upgrading gaskets works too for certain applications 09-Feb-20 12:49 PM I normally just use the cheapest copper ones haha 09-Feb-20 02:52 PM <__ice9#6039> I used this in a cryogenic device. It's good stuff. You can form it into the grooves in knife edge seals to use them again too. It cold welds to itself. https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F253977555314 09-Feb-20 07:16 PM <__ice9#6039> Question: does anyone happen to know a good way to find an optical pyrometer good to at least 2800C? The highest I have seen so far is only 1800C, and I already have one good to 1500C, but I want something a bit more capable for my graphite furnace and the ebeam project. 09-Feb-20 07:16 PM <__ice9#6039> C-type W-Re thermocouples are only good to about 2300C for the furnace, are not suitable for remote measurement for the ebeam, and have excessively high thermal conductivity which is likely to bias the results. 09-Feb-20 07:16 PM <__ice9#6039> (though I still intend to use one in the former application regardless, on suitable runs at least) 09-Feb-20 07:16 PM <__ice9#6039> So far I have found these http://www.zycon.com/Profile/Mikron-Infrared-LumaSense-Technologies-225306/Temperature-Transmitters.html Costs are a bit high though 09-Feb-20 07:16 PM <__ice9#6039> Prefer to avoid making it myself with a spectroscope and a raspberry pi, though that is possible I suppose 09-Feb-20 07:45 PM <__ice9#6039> Actually, on second thought, none of my existing temperature controllers have any means of operating on a signal from one of these, which means the controller itself must be written as well. That somewhat favors building. 09-Feb-20 08:00 PM 2800C is well within NIR, dropping out of SWIR 09-Feb-20 08:00 PM make one out of a regular camera with a NIR filter, and calibrate it yourself 09-Feb-20 08:01 PM <__ice9#6039> That would be the idea, yes, or a diffraction grating. One issue is that the variation in brightness over the full temperature range is quite extreme. 09-Feb-20 08:01 PM <__ice9#6039> Alternately, does anyone know what kind of fiber optic connector this is? Or is it some proprietary thing? https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F263006960775 09-Feb-20 08:01 PM <__ice9#6039> Looks a bit like SMA905? 09-Feb-20 08:02 PM looks like sma, yeah 09-Feb-20 08:03 PM <__ice9#6039> Ah yeah it is, cool. Ok solved then. 09-Feb-20 08:03 PM <__ice9#6039> I found a compatible one good to 3500C with that kind of connector and made an offer. If it doesn't work then I guess I will just buy it outright though. This way I don't need to do my own emissivity adjustments calibration, which would likely be difficult to get right. 09-Feb-20 08:34 PM <__ice9#6039> Accepted by nocturnal seller ^^ Mikron M78 1200-3500C apparently 09-Feb-20 09:08 PM <__ice9#6039> Next I will need to measure the fiber core when it arrives to get the correct type of cable and lens, then test against furnaces 09-Feb-20 09:08 PM <__ice9#6039> Actually this one doesn't even have a lens apparently 09-Feb-20 10:42 PM <__ice9#6039> Appears to be 800μm fiber based on dimensions and photos of the cable 09-Feb-20 10:42 PM <__ice9#6039> Could be 750 though. Will need to check on arrival 09-Feb-20 10:51 PM <__ice9#6039> Photos look more like 750 on more precise measurement, will confirm 09-Feb-20 10:51 PM https://www.ebay.com/itm/C165472-Lot-2-MDC-Conflat-Vacuum-Chambers-Ion-Pumps-w-Sliding-Aluminum-Frame/333499988847 10-Feb-20 09:03 PM <__ice9#6039> This is probably the best laser flashtube pulse capacitor I have seen on eBay-- https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F372568720984 12-Feb-20 11:58 AM https://www.ebay.com/str/bluesnailsky 12-Feb-20 11:58 AM Great prices on lots of stuff 12-Feb-20 12:58 PM https://auctionbdi.hibid.com/lot/61785513/pxi?ipp=10 12-Feb-20 12:58 PM I can't get it, so maybe someone in the bay can. It's essentially $25 13-Feb-20 12:48 PM https://www.ebay.ca/itm/Nor-Cal-ISO-320-CR-AV-Centering-Ring-ISO-Aluminum-With-Spacer-Ring-and-Viton-NEW/142845665944?hash=item214243e298:g:38cAAOSw6QpbMnmo @nmz787 13-Feb-20 02:18 PM Ooo, that's a much better price 18-Feb-20 11:00 AM https://auction.fabexchange.com/Event/Details/3212222/Assets-for-On-Going-Operations-of-a-Laser-Optical-Lab 18-Feb-20 11:00 AM Auction for people in California 18-Feb-20 11:15 AM That Julabo LH85 starting at $100 is nice 18-Feb-20 11:15 AM 800W cooling power at -20C 18-Feb-20 11:15 AM how about the CMM...bet that will go for way more than $100 18-Feb-20 11:16 AM TIL PV testers have their power rated in 'suns' 18-Feb-20 11:16 AM too bad it is all up in the bay area...would be a long drive up and back 18-Feb-20 11:16 AM oh...and the laser welding system that would be lots of fun 18-Feb-20 11:30 AM Surprisingly the auctions on that site often don't get a lot of attention. 18-Feb-20 11:30 AM https://auction.fabexchange.com/Event/Details/2990196/Test-Calibration-Equipment-by-Agilent-Keithley-LeCroy-Starrett-more?page=1 18-Feb-20 11:30 AM I'd say about half the items in this auction were sold at minimum bid 18-Feb-20 11:34 AM O.o the thermotek T257P-30 looks crazy 18-Feb-20 11:34 AM in terms of design 18-Feb-20 11:34 AM we just have a ton of T255P-1CR 18-Feb-20 11:34 AM How much did the polyscience chillers go for? 18-Feb-20 11:36 AM Can't remember, way too many items in that auction. 18-Feb-20 11:36 AM But I think a lot of them were just sold at $100 18-Feb-20 11:36 AM Like all the height gauges were sold at $50 18-Feb-20 11:37 AM bargains 18-Feb-20 11:37 AM Amazing deal... 18-Feb-20 11:37 AM a water-water polyscience 6000 is ~$2500 iirc 18-Feb-20 11:37 AM when they're new they're very reliable of course, those are quite old since they have the green LED screens rather than the grotesque blue LEDs they use now 18-Feb-20 11:37 AM they've also probably been on near 24/7? 18-Feb-20 11:41 AM This reminds me to get a pump for the laser which hopefully will be arriving soon 18-Feb-20 11:41 AM @Spirit I assume you haven't got yours yet? 18-Feb-20 11:42 AM Have you? 18-Feb-20 11:42 AM Nope 18-Feb-20 11:42 AM Yeah me neither 18-Feb-20 11:42 AM No updates on tracking 18-Feb-20 03:43 PM @Mason_Yu i won a similar auction a week or two ago and it mentioned after the time ended "you may have won this auction"... Not sure if that's common for these sort of auctions or just that site (svdisposition)... But basically it was a way for them to have a reserve price without saying it, I think 18-Feb-20 03:43 PM It could also have been due to payment being a slow wire transfer, so you only won if payment succeeded within their specified time frame of 2 days 18-Feb-20 11:19 PM @nmz787 I've had that on auctions when there was an option to make an offer on all of the lots. I won a lot (awesome price for a robot arm), but didn't get it because the auctioneer accepted a single bid for all of the lots. 18-Feb-20 11:38 PM https://www.ebay.de/itm/153836857528 19-Feb-20 12:09 AM I'm glad eBay automatically changes the . to , to convert from European sig fig notation for me... otherwise I'd be like "two and a half euro for a laser, I'm in!" 19-Feb-20 12:12 AM 'tho tbh I thought the same at first, didn't have enough coffee yet XD 19-Feb-20 03:41 AM <__ice9#6039> Is it possible to coordinate freight shipping for auctions like this, or do you literally have to sign for it and pick it up in person...? 19-Feb-20 05:00 AM IIRC you can hire a company to do it and many have a partner shipping company they work with. Or preferred shipping companies. 19-Feb-20 05:46 AM <__ice9#6039> Hmm that may be worth inquiring. Figuring probably $200-400 for that, but could be reasonable for the right item. 19-Feb-20 08:04 AM just lowered the price on this: https://www.ebay.nl/itm/264617573051 ebay wouldn't allow me to enable "Make offer", but i'm open for offers 19-Feb-20 01:10 PM https://www.ebay.com/itm/Huntington-High-Vacuum-Research-Chamber-Electric-Feed-Through-6-Flange/202909146049 19-Feb-20 01:10 PM Shiny 19-Feb-20 01:10 PM https://www.ebay.com/itm/C165855-Stainless-Vacuum-Chamber-NW200-ISO-Flange-10-Conflat-Varian-Turbo-V200/293483317778 19-Feb-20 01:10 PM Maybe a make offer thing if this is something that looks like it'd fulfill a need for you. 19-Feb-20 02:29 PM that first one has an MCP on it doesn't it? 19-Feb-20 02:29 PM looks to me like a dual layer ungrounded MCP, but I don't see why it has quite so many wires 19-Feb-20 06:25 PM <__ice9#6039> Second one is an entire chamber, interesting 19-Feb-20 06:33 PM oh geez i have the controller for that exact turbo too. and a huge beautiful loadlock... and it's all decked out in heater bands.. and it's on a STAND... augh 19-Feb-20 06:33 PM not a lot of feedthrough points, though 19-Feb-20 06:50 PM something something tig welder Also the end is just a massive ISO flange... could always add a section with more feedthroughs. or do Ts to get more connections off the ones on the sides, lots of options. 19-Feb-20 06:50 PM its actually in california, you might be-able to ask them if you can come buy and pick it up and make a deal 19-Feb-20 06:50 PM if your close to it anyway 19-Feb-20 07:32 PM Last chamber: https://www.ebay.com/itm/C166069-A-N-7-Way-Cross-Multi-Port-Conflat-Vacuum-Chamber-13-25-6-2-75-CF/392691532132?hash=item5b6e3d4164:g:sqoAAOSwUcteSzM0 19-Feb-20 07:32 PM Says it has a 'dent' on the 13, though. 19-Feb-20 07:32 PM And there's this: https://www.ebay.com/itm/T165869-Finnigan-MAT-LCQ-Mass-Spectrometer-System/293481069070?hash=item4454d5ba0e:g:iKcAAOSw8dJePfF2 19-Feb-20 07:32 PM Mike from MikesElectricStuff even did a video tearing one of these apart. 19-Feb-20 10:37 PM @Conmega dang that chamber is almost what I need, but it's only 15" not 30" 19-Feb-20 10:37 PM Something something TIG welder is what it might come down to... That door is pretty snazzy tho 20-Feb-20 12:14 AM <__ice9#6039> 30"...? 20-Feb-20 12:14 AM <__ice9#6039> Do you need UHV or just HV? 20-Feb-20 01:13 AM Barely HV 20-Feb-20 01:13 AM 100 mTorr 20-Feb-20 04:05 AM <__ice9#6039> oh huh 20-Feb-20 04:05 AM <__ice9#6039> that reminds me of the 24" 160L chamber I made out of a Winco thick-walled aluminum stockpot and a sheet of acrylic 20-Feb-20 04:05 AM <__ice9#6039> for cryo insulation 20-Feb-20 04:05 AM <__ice9#6039> it does do better than that fwiw 20-Feb-20 04:05 AM <__ice9#6039> given a nitrile gasket and a lot of high vac grease 20-Feb-20 04:05 AM <__ice9#6039> a bit silly but it works 23-Feb-20 11:45 AM https://www.ebay.com/itm/223924899093 23-Feb-20 11:45 AM https://www.ebay.com/itm/401734385252 23-Feb-20 11:58 AM Hmm, looks pretty corroded on the front surfaces 23-Feb-20 11:58 AM Wonder how the pins and wires are 23-Feb-20 03:33 PM Those NIM chassis are worth that much? We have several spares -_- 23-Feb-20 04:40 PM That one looks like it’s been out in the rain for a while! 23-Feb-20 05:10 PM was tempted to throw them a lowball offer for that grungy bin, but..shipping, eh 23-Feb-20 06:25 PM huh in what situation do you buy a spectrometer that runs off liquid nitrogen or helium? 23-Feb-20 06:25 PM like if you need it cooled... Why not use a closed loop? The spectrometer is going to be $$ regardless 23-Feb-20 11:16 PM They're liquid cooled because of microphonics 23-Feb-20 11:16 PM only in the last 10-20 years ones with solid state coolers have become popular, but ln2 is still the most common type 23-Feb-20 11:18 PM also...who is paying has a part in it too 23-Feb-20 11:18 PM yep 23-Feb-20 11:19 PM for the hobbyist side of things unless you have some damn good connections even the LN2 options are pretty spendy 23-Feb-20 11:19 PM heh, you tell me 23-Feb-20 11:19 PM mine is chugging about a liter per day 23-Feb-20 11:20 PM at least you have a HPGe! do not have to keep it full all the time...just when you need to use it 23-Feb-20 11:21 PM well 23-Feb-20 11:21 PM yes and no 23-Feb-20 11:21 PM It's a terrible feeling to let it warm up 23-Feb-20 11:21 PM suppose it might be 4hrs before you need to use it... not just then too 23-Feb-20 11:21 PM like venting a chamber that has been at -8 23-Feb-20 11:21 PM lol no it's like a whole day to get it going 23-Feb-20 11:21 PM 4 hrs is only to get it all in there 23-Feb-20 11:22 PM oh wow i thought they cooled down a bit faster than that, makes more sense. 23-Feb-20 11:23 PM That and repeated thermal cycling is less than great for the detector's lifespan 23-Feb-20 11:23 PM ^ +1 23-Feb-20 11:23 PM but mine has a small dewar to make it portable, at the expanse of insulation 23-Feb-20 11:25 PM I've always sort've loved the concept of a portable HPGe detector 23-Feb-20 11:25 PM good 30l dewars are like two to three months until they need refill 23-Feb-20 11:25 PM ehhhhhh 23-Feb-20 11:25 PM I wouldn't bet on that 23-Feb-20 11:26 PM well I mean best case 23-Feb-20 11:26 PM What's the sort of standard size for them? 23-Feb-20 11:26 PM let's move this to #radiation 24-Feb-20 04:27 PM that 13.25" CF chamber with the dented knife edge for $500 ends in 30 min btw, just happened to have it open 24-Feb-20 04:27 PM https://www.ebay.com/itm/C166069-A-N-7-Way-Cross-Multi-Port-Conflat-Vacuum-Chamber-13-25-6-2-75-CF/392691532132?hash=item5b6e3d4164:g:sqoAAOSwUcteSzM0#shpCntId 24-Feb-20 07:49 PM looks like it failed to sell, so any interested should look for the upcoming re-listing with a lower price 25-Feb-20 11:17 AM It seems like a great deal for someone who only wants to hit -6 torr and doesn't mind using a big piece of acrylic with a flat gasket on the bad knife edge 25-Feb-20 02:47 PM https://www.ebay.com/itm/202706622184 25-Feb-20 02:50 PM uhm LOL WUT 25-Feb-20 02:50 PM Referb 325 dollars SHIPPED TO MY HOUSE?! 25-Feb-20 02:50 PM you're welcome 25-Feb-20 02:51 PM wow just... wow... 25-Feb-20 02:51 PM those CAN'T be referb 25-Feb-20 02:51 PM I'd expect them to have pressure in them at-least 25-Feb-20 02:51 PM there has to be something wrong there but if they listed it wrong ebay will hold them to it 25-Feb-20 02:52 PM I'd say 25-Feb-20 02:52 PM buy one and find out 25-Feb-20 02:52 PM in "people who viewed this item also viewed" section... 25-Feb-20 02:52 PM I wonder who... 25-Feb-20 02:52 PM :P 25-Feb-20 02:53 PM shhh 25-Feb-20 02:53 PM hehehe 25-Feb-20 02:53 PM also yikes those are 3 phase 25-Feb-20 02:53 PM so yea 25-Feb-20 02:53 PM I already have two 3 phase compressors I can't use that I paid about that much for :) 25-Feb-20 02:54 PM why 25-Feb-20 02:55 PM because the surplus store had them and they were ON THE PALLETS still from referb... 25-Feb-20 02:55 PM so I know their absorbers have only 20 hours on them 25-Feb-20 02:56 PM But then... make 3 phase 25-Feb-20 02:56 PM so they are easily worth the few hundred bucks I paid for them 25-Feb-20 02:56 PM I have a friend with 3 phase and he will likely be trading me for one of them 25-Feb-20 04:44 PM Can't run them with a frequency converter/VFD? 25-Feb-20 04:44 PM We do that to a drill press to run it from single phase. Just a small ABB VFD tho. 25-Feb-20 04:52 PM That’s great to add variable speed control to a motor. But can a VFD be programmed to output a fixed frequency and voltage, and not do whatever magic a VFD typically does with soft start, detecting back EMF, etc.? 25-Feb-20 04:52 PM Dannnng, $225 shipped to me 25-Feb-20 04:52 PM Err, 236 25-Feb-20 04:52 PM Literally 45 min drive with no traffic 25-Feb-20 04:52 PM Some fabs over that way 25-Feb-20 04:52 PM Place called wafertech across the river from there 25-Feb-20 04:54 PM @rdpierce Depends on the model, but yes. 25-Feb-20 04:54 PM But, what would one use it for? 25-Feb-20 04:54 PM Cryo TEM? 25-Feb-20 04:54 PM For example ABB VFD's can usually be programmed for 0 ramp. 25-Feb-20 04:55 PM Or vacuum pump? 25-Feb-20 04:56 PM And if one only needs 50Hz -> 60Hz or vice versa frequency translation and no voltage conversion, one can use an online ups. 25-Feb-20 04:56 PM I was wondering that, too.... why does someone need to compress helium? 25-Feb-20 04:56 PM We did that work when we ran the 115VAC models via a Powerware UPS set to 60Hz and then to a step down transformer. Bit of a hack. 25-Feb-20 04:56 PM To get cold temperatures! 25-Feb-20 04:56 PM Cant push that coldhead below 10Kelvin without that! 25-Feb-20 04:57 PM The manual for it says it's part of a cryogenic refrigeration system 25-Feb-20 04:57 PM Like a fridge, but the working gas is helium. 25-Feb-20 04:57 PM Ahh, ok.... 25-Feb-20 04:57 PM A friend has wanted to get his own cryocooler. He wants to have his own LN2 factory so his detectors can be self sufficient. 25-Feb-20 04:58 PM I can't think of any reason I'd need it, maybe a nitrogen generator... 25-Feb-20 04:59 PM Private individuals can buy LN2 in the US, but typically at usurious rates. 25-Feb-20 04:59 PM (I love the timing of this.... I was listening to David Bowie and Freddie Mercury’s song Pressure.) 25-Feb-20 05:31 PM It's more compact and far easier than building a Hampson-Linde fwiw 25-Feb-20 05:33 PM I’ll be needing a uhv cryopump at some point 25-Feb-20 05:33 PM But only for pumping N2 and O2 25-Feb-20 06:13 PM I'm thinking of moving to 30 minutes into the country, so @home nitrogen might be nice... But then all my money is going to be tied to a new mortgage 25-Feb-20 08:43 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20200219_150302-D7443.jpg 25-Feb-20 08:43 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20200219_150401-51750.jpg 25-Feb-20 08:43 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20200219_150433-6FEC4.jpg 25-Feb-20 08:43 PM My cryopump with its helium compressor was just delivered last week 25-Feb-20 08:43 PM Didn't expect the pump itself to be taller than the freaking compressor lol 25-Feb-20 08:43 PM So yeah, powering it is the challenge now. 200V 3 phase, luckily only 2.5 kW 25-Feb-20 08:43 PM Also requires water cooling. 25-Feb-20 08:43 PM I'm hoping that I don't have to replace the absorber in the compressor, given its relatively recent overhaul date 25-Feb-20 08:43 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20200219_152444-67B20.jpg 25-Feb-20 08:43 PM Pump was not too nasty on the inside 25-Feb-20 08:43 PM Will require a thorough cleaning and a nice long bake, luckily it already comes with the heater blanket 25-Feb-20 09:10 PM “Not too nasty” 25-Feb-20 09:10 PM Ew but also eh 25-Feb-20 09:12 PM I don't think it was used in a harsh environment, no visible corrosion or damage on the inside 25-Feb-20 09:14 PM Definitely not much weak vacuum corrosive cycling 25-Feb-20 09:15 PM Maybe I'll keep the large turbo after all. Honestly the effective pumping speed of this thing is not that much higher, after I put on the adaptor for this 10" ASA flange 25-Feb-20 09:16 PM Really? 25-Feb-20 09:16 PM And it doesn't deal with continuous gas loads like the turbo 25-Feb-20 09:16 PM Correct 25-Feb-20 09:16 PM Also takes longer to start 25-Feb-20 09:16 PM Ultimate pressure it wins though 25-Feb-20 09:18 PM The only advantage I can see is just how robust it is, I'm comfortable running it all day, with high voltages pulses going on nearby 25-Feb-20 09:18 PM Much easier to kill the turbo compared to the cold head 25-Feb-20 09:18 PM Oh with the pumping speed I'm referring to that for hydrogen and helium, for nitrogen/air the cryopump is about 4 times better than the turbo 25-Feb-20 09:18 PM 8000 L/sec rated... 25-Feb-20 09:27 PM Yeah 25-Feb-20 09:27 PM Honestly if you build stuff right the turbo is better to run cw 25-Feb-20 09:27 PM It’s barely any wear and tear when you’re not loading it or cycling stuff 25-Feb-20 09:27 PM But the cold head has lots of mechanical wear 25-Feb-20 09:27 PM In good condition they can run for ages, but eh.... 25-Feb-20 09:27 PM Also the power consumption 25-Feb-20 09:30 PM I'm not looking to run it 24/7. And yes, that compressor and pump can't be moved anywhere and just get plugged into a wall. The turbo also gives me plenty of monitoring data from internal sensors so I know when something is wrong 25-Feb-20 09:30 PM And water? 25-Feb-20 09:30 PM Also noise 25-Feb-20 09:31 PM Both need water cooling, the compressor needs a lot more of it 25-Feb-20 09:31 PM You can make your own low power closed loop for the turbo probably. 25-Feb-20 09:31 PM I have that yeah 25-Feb-20 09:31 PM But I don't want to destroy a turbo with a single high voltage pulse... 25-Feb-20 09:31 PM I'm fine killing a gauge or two accidentally, but I love my turbo 26-Feb-20 06:54 AM As long as the turbo chassis is well grounded and has a screen over the rotor, I'm not sure why an HV pulse would have much risk of damaging it. All the internal electronics are essentially buried under the chassis 26-Feb-20 06:54 AM Making 3-phase with an adaptor can be done by building a device for it or buying a 3-phase drive online 26-Feb-20 06:54 AM Then it will run anywhere 26-Feb-20 07:48 AM As I explained in #general , the pulse delivers a current on the order of 100 kA, all of which needs to return to the main capacitor bank. I do have a massive ground bus bar/plate for this, but an even larger turbo bolted to the grounded frame can easily be a current return path too. A tiny fraction of that going through the running controller (which has a path to ground through the power supply too) will certainly damage things 26-Feb-20 07:49 AM Missed that 26-Feb-20 07:49 AM Yes 26-Feb-20 07:49 AM I know 3-phase inverters are commonly available and can be hacked together if necessary 26-Feb-20 07:49 AM It's also 200V and I'm in the US 26-Feb-20 07:49 AM >And yes, that compressor and pump can't be moved anywhere and just get plugged into a wall. Just addressing this, that's all 26-Feb-20 07:50 AM I happen to have a massive transformer for my SEM that's made in Japan and will give me 200V 26-Feb-20 07:50 AM Not sure if it will do 2.5 kW 26-Feb-20 07:50 AM Yeah the 220V issue is annoying. I have a few transformers but ultimately just got a 220V circuit 26-Feb-20 07:50 AM Mine are 500W, 3000W, and 5000W. The latter was originally meant for solving a very specific issue inside a plasma device though. It doesn't really make much sense on normal circuits. 26-Feb-20 07:50 AM Unless you have a 220V without a split phase receptacle 26-Feb-20 07:50 AM And want to make a 40A 125V 26-Feb-20 10:04 AM https://www.go-dove.com/events/487?ps=100 26-Feb-20 10:04 AM Some nice stuff in here 28-Feb-20 06:03 PM Well this seller got half of my order to me... But not the isolation valves, after more than 2 weeks... And they're supposedly 1.5 hours away... So I filed an eBay claim https://www.ebay.com/str/bluesnailsky 28-Feb-20 06:03 PM Looking at their negative reviews, other folks have had stuff not show up, or show up shipped from China 28-Feb-20 06:03 PM I know @idmb had a bad experience with them too 28-Feb-20 06:47 PM Yeah. They said they undercalculated shipping and I had to cancel the order - they refused to cancel it themselves. Eventually they relented. 28-Feb-20 07:05 PM i've ordered from them twice -- one order took ~10 days, another ~20 28-Feb-20 07:05 PM but very small items 28-Feb-20 07:07 PM @nmz787 yup it is weird some of the stuff is shipped from China some is from Corvallis 28-Feb-20 07:07 PM I never received one of the KF/NW hoses 28-Feb-20 07:07 PM https://locoscience.com/ 28-Feb-20 07:07 PM these are ok 28-Feb-20 07:07 PM they also have eBay store but on eBay it is typically more expensive 28-Feb-20 07:07 PM I've ordered from them because they are in CA and it comes within same week 28-Feb-20 07:07 PM I think they buy from China and just engrave with laser LoCo on it 28-Feb-20 07:07 PM I have no idea why would you spend time/money on slapping your own logo there 28-Feb-20 07:07 PM KF blanks were nice, KF-tees okay 28-Feb-20 07:07 PM same as you would get from bluesnail 28-Feb-20 07:12 PM Yeah I got a 4 way tee from them in like 2 days, better price than LDS vacuum 28-Feb-20 07:12 PM Like 33% less, plus free shipping 28-Feb-20 07:13 PM yeah price is better than LDS but also it's not from Florida which takes forever to ship 28-Feb-20 07:13 PM I have UPS mailbox and LDS honors it as commercial address so I get free shipping from LDS if I order a lot 28-Feb-20 07:30 PM Oh interesting 29-Feb-20 01:18 AM https://www.ebay.de/itm/184183642747 Hybrid PMTs on the cheap! 29-Feb-20 09:04 AM wish they would ship to somewhere besides Germany 29-Feb-20 09:04 AM looks like you could corner the market on them 29-Feb-20 09:23 AM if you want me to I can buy them and send them to you 29-Feb-20 09:24 AM nah I do not need to spend that much money on things I have no way to drive at the moment 29-Feb-20 09:24 AM but for half their asking price...doubt they would make a deal there though 04-Mar-20 06:48 PM https://www.amazon.com/ArT-Wine-Preservation-Enjoy-Your/dp/B01MEHJCQ2/ref=sr_1_1_sspa 04-Mar-20 06:48 PM Tiny bottle of Argon on Amazon.com 04-Mar-20 07:49 PM <𝓕ermion#6024> Anyone have any ball screw stages? 04-Mar-20 07:49 PM <𝓕ermion#6024> That they wanna sell. 04-Mar-20 07:49 PM <𝓕ermion#6024> C3 or better screws. Parker or whoever. 05-Mar-20 08:21 AM Shipping would murder that. Get in touch with your industrial surplus scene 05-Mar-20 08:43 AM <𝓕ermion#6024> not looking for a big one 05-Mar-20 08:43 AM <𝓕ermion#6024> maybe 50-100 mm of travel. 05-Mar-20 08:43 AM <𝓕ermion#6024> @Laughing 05-Mar-20 08:51 AM @𝓕ermion Are you talking micromanipulator stage or heavy duty leadscrew? 05-Mar-20 09:10 AM <𝓕ermion#6024> In between. 05-Mar-20 09:10 AM <𝓕ermion#6024> Think Parker 800ct 05-Mar-20 09:10 AM <𝓕ermion#6024> Something that might move a wafer around. 05-Mar-20 09:25 AM @𝓕ermion Are you based in Europe? 05-Mar-20 10:08 AM Nevermind .. I have not seen the second message and I do not have the thing you seek 05-Mar-20 06:23 PM <𝓕ermion#6024> https://www.ebay.com/itm/254331692145 Not my auction but 50 bucks for a servo drive isn't bad, even if it is a dinosaur 05-Mar-20 06:23 PM <𝓕ermion#6024> gonna use it for a linear motor ^^ 07-Mar-20 03:56 AM https://www.ebay.de/itm/254504661513 Mister Seltzman is selling a lot of stuff again 09-Mar-20 02:32 PM <𝓕ermion#6024> Anyone want an STM controller? East coast USA 09-Mar-20 02:33 PM Any details? 09-Mar-20 02:34 PM <𝓕ermion#6024> PM ok? 09-Mar-20 02:34 PM <𝓕ermion#6024> trying not to dox myself 09-Mar-20 02:37 PM Sure, you don't need to ask to ask... Thats like rule #1 on the internet 09-Mar-20 06:18 PM https://edispositions.com/auctions/#/sales/87481/lots?per_page=100 09-Mar-20 06:18 PM Man I'm jealous of you guys in California 09-Mar-20 06:18 PM Nice weather, and auctions like these popping up twice every month 09-Mar-20 06:20 PM and i only spend 55% of my paycheck on rent + keeping the lights on 09-Mar-20 06:20 PM ducks 09-Mar-20 06:23 PM By the way, you can find equivalent listings for most of the items on eBay from the Outback seller 09-Mar-20 06:26 PM yeh, outback6 is down in gilroy too. i don't know if they go through edispositions first and then dump it on ebay for long-term sale or what 09-Mar-20 06:45 PM lol 10-Mar-20 07:49 AM They generally do the stuff they're trying to get rid of, or is super bulky, on edispositions, being that it has to start at a lower price. 10-Mar-20 06:47 PM https://www.ebay.com/itm/vacuum-inficon-crystal-head-with-feedthrough-/254533495125 10-Mar-20 06:47 PM expensive but maybe make offer after some time 11-Mar-20 04:14 AM Yeah that's still in the "expensive enough to consider DIY approach" for me 11-Mar-20 07:32 AM for sure 11-Mar-20 09:36 AM https://www.ebay.com/itm/UHV-Vacuum-Job-Lot-STM-SIMS-Loadlock-Chambers-Gate-Valves-Flanges-More/254534033143 11-Mar-20 09:36 AM wow... I mean the price is high but like 11-Mar-20 09:36 AM jeez... 11-Mar-20 09:36 AM all that conflat 11-Mar-20 09:33 PM can i borrow $6502.50 from someone? 11-Mar-20 10:10 PM you may not actually want that 11-Mar-20 10:10 PM all the chambers are covered in those stupid off-focus flanges 12-Mar-20 08:50 PM Email: mbrukman@seas.upenn.edu Name: Matthew Brukman Organization: University of Pennsylvania Title-Subject: [Filtered] High Vacuum STM available Message: Good morning! We have a surplus high vacuum STM system free to a good home. Components include RHK controller Omicron STM-1 head vacuum chamber PC with RHK software roughing, turbo, and ion pumps frame with air-supported legs Recipient would be responsible for transport and reassembly. Please contact me with questions. Regards, Matt Matthew Brukman Scanning and Local Probe Facilities Director Singh Center for Nanotechnology 3205 Walnut St. Phila., PA 19104 215-746-2373 12-Mar-20 08:58 PM I know someone who did their phd at upenn in the 80s 12-Mar-20 08:58 PM and does stm stuff 12-Mar-20 08:58 PM I wonder if that stuff is that vintage 13-Mar-20 02:26 AM https://www.ebay.com/itm/233220354869 13-Mar-20 02:58 AM Does it have an e-beam in it? 13-Mar-20 02:58 AM Oh, x-ray 13-Mar-20 03:00 AM I'm not sure what exactly it is 13-Mar-20 03:00 AM but it's cheap enough to buy it for the parts you can see, everything inside will just be a nice surprise 13-Mar-20 06:50 AM This looks like it is an EDX system for a SEM. The SEM excites the sample. 13-Mar-20 06:50 AM Worse, it’s probably configured for a specific type of SEM. 13-Mar-20 06:50 AM The beam and stage control are going to be proprietary. 13-Mar-20 07:55 AM Idk i googled the name and saw xray come up 13-Mar-20 08:02 AM My guess: 13-Mar-20 08:02 AM I’ve worked with an Oxford Link Isis EDX, and this looks similar. 13-Mar-20 08:02 AM If so, it’s a Si(Li) detector with a Be window, LN2 cooled. The detector, dewar, FET, and pre-amp are typically bundled together. There’s also frequently an LN2 dipstick level sensor, which acts as an interlock. No LN2, the HV bias shuts down / wont turn on, protecting the detector. 13-Mar-20 08:02 AM The box contains the HV bias supply, pulse processing / MCA, and SEM controls. 13-Mar-20 08:02 AM High end EDX systems have options to communicate with and in some cases take over certain operations of the SEM. 13-Mar-20 08:02 AM SEMs with motorized stages can “auto-sample” 13-Mar-20 08:02 AM You can define multiple points, and the EDX will drive the SEM stage to each in sequence, spend however many minutes at each one recording a spectrum, and continuing to the next, all unattended. 13-Mar-20 08:02 AM Also, EDX’s will frequently “wag the dog” by taking control of the scan coils. They can also take an input from the secondary electron detector and capture a digital image. This is a useful value add for really old school analog SEMs where image capture consists of a Polaroid camera. And in some cases, the EDX can provide better resolution / bit depth than the native digital capture the SEM came with. 13-Mar-20 08:02 AM I believe all of this is highly proprietary. EDX manufacturers have to work with SEM manufacturers to learn the digital serial protocols, connectors and pinouts, algorithms, etc. to “wag the dog” for each SEM. For that reason, any used EDX is probably going to be specific to a certain type of SEM. And the chamber geometries, detector port locations, etc. are different, too, so the adapter on the detector may not work on other SEMs as-is. 13-Mar-20 08:02 AM I think I see what looks like a really old hard drive in that box. There may be a PC in there which runs the EDX software. Or not. In my case, the Oxford Link Isis used an external PC with a PCI card that interfaced to the box. 13-Mar-20 10:23 AM Internet search says it has HPGe detectors 13-Mar-20 10:23 AM This is all literally from the first page of google search hits for 'princeton pgt 8000' 13-Mar-20 11:42 AM that is definitely a SEM-mount SiLi detector 13-Mar-20 11:42 AM (source: I have two) 13-Mar-20 01:45 PM https://www.vebeg.de/web/de/verkauf/suchen.htm?DO_SUCHE=1&SUCH_topsearch_term=canberra&SHOW_AUS=2014160&SHOW_LOS=16 14-Mar-20 04:06 AM https://hgrinc.com/productDetail/Inspection/Used-Benchmark-Industries-Inc-Vacuum-Chamber/10192240047 14-Mar-20 04:06 AM jeeezzzzz 14-Mar-20 11:18 AM wow 14-Mar-20 01:22 PM I'm going to pay a visit to HGR this may when I drive by Cleveland in a U-haul truck 15-Mar-20 01:28 AM So what kind of liquid filters should I get for removing micro and nano particulates in my solvents that I've been using for washing my nanoimprint shim? 15-Mar-20 01:28 AM I remember back in my bachelors we had some luer lock tipped filters for screwing onto syringes... But I remember like 5 years ago not being able to find good prices on them... Or the bag I did find being like $200 or something 15-Mar-20 01:28 AM Oh, interesting... Amazon seems to have some 10 packs for a dollar per filter (search was syringe filter) 15-Mar-20 09:55 AM I used those 200nm syringe filters for cleaning nanoparticle solutions back when I did synthesis. I don’t know size of particulate in your solution but those worked well for me. Sure they have finer grade too 15-Mar-20 12:08 PM https://www.govdeals.com/index.cfm?fa=Main.Item&itemid=11676&acctid=4753 19-Mar-20 05:04 AM @Metanoic https://www.govdeals.com/index.cfm?fa=Main.Item&itemid=22800&acctid=2863 19-Mar-20 05:44 AM Thanks for thinking of me =) 19-Mar-20 08:33 PM @Noxz interesting, haven't seen that aspex variant 20-Mar-20 04:17 AM Anyone have an iso100 to iso63 reducer they are interested in getting rid of? 20-Mar-20 04:17 AM Cheapest I'm seeing on eBay is $77, flanges would be lole $37 (or 45 if I got an iso100 blocking plate instead of a flange), then I'd have to learn how to weld them together which is definitely more than $40 worth of hassle (and I'd need some sort of material to bridge the gap, presumably some straight pipe or a bellows) 20-Mar-20 07:18 AM TIG welding stainless is a pain. It’s easy to get “sugaring” where the other side, being hot, reacts with oxygen and looks like carmelized sugar. 20-Mar-20 07:18 AM In theory, you can set up a backing purge of argon. Even when I’ve done that, I’ve had problems. 20-Mar-20 09:21 AM Glove box welding is best for that. Also some people use a purge table then electro clean afterwards to restore the appearance. 20-Mar-20 09:21 AM https://youtu.be/StzAPeB4zEY 20-Mar-20 09:21 AM Not the best example but it’s what I could grab fast. 20-Mar-20 11:10 AM I've heard stainless is much easier than aluminum though 20-Mar-20 12:02 PM Our machine shop is definitely happier with us when we need them to weld stainless at least 20-Mar-20 12:14 PM ours prefers welding things they're bad at 20-Mar-20 12:14 PM they like the practice >.< 20-Mar-20 10:56 PM Seems like it might be an ok price for a CF valve https://www.ebay.com/itm/High-Vacuum-2-75-Conflat-Angle-Bellows-Valve/233491590899 21-Mar-20 07:57 AM Anecdotally, every valve of that type I’ve pulled off a shelf (so, used) has leaked around -9 torr. 21-Mar-20 07:57 AM (From side to side, bellows is fine) 23-Mar-20 03:03 PM https://www.ebay.com/itm/113893803121 24-Mar-20 09:33 AM wow thats a sizable thing 24-Mar-20 03:37 PM goodness 24-Mar-20 10:05 PM <𝓕ermion#6024> lol stainless is way easier than aluminum 24-Mar-20 10:59 PM Seems the post office is imminently going bankrupt unless govt steps in... Not looking good for eBay purchases in the near to mid future 25-Mar-20 07:54 AM Some more cynical than I might say the government is going bankrupt too I haven’t been ordering from amazon recently ether. 25-Mar-20 12:58 PM Heh, amazon is still delivering to me with pretty decent latency... I've gotta disinfect and quarantine my packages tho 25-Mar-20 01:10 PM Boy I sure hope SVC store rated that thing as an 8 just like always. 25-Mar-20 01:10 PM ...Interesting, SVC store got a boatload of old optics. I wonder if Kevin sold out his stock... 25-Mar-20 01:50 PM Here's a power supply for ya: https://www.ebay.com/itm/Power-Designs-HV-1579-10KV-30KV-1MA-High-Voltage-Regulated-DC-Power-Supply/114142994924?hash=item1a9373e1ec:g:RVgAAOSwt9BeZG0L 25-Mar-20 01:52 PM https://www.ebay.com/i/124012407434 looks like a decent deal? im not sure on what valves like this would normally run for 25-Mar-20 01:54 PM @mike crb Those are nice in that they have good conductance, but it doesn't come with the solenoid valve and has no feedback so if you don't care about conductance I think you can get cheaper valves. 25-Mar-20 02:00 PM @idmb it seems most lack a solenoid valve 25-Mar-20 02:00 PM @mike crb yeah there were some others like that, idk about conductance, for $17.5 shipped a week or two ago 25-Mar-20 02:02 PM conductance really doesn't matter 99% of the time 25-Mar-20 02:02 PM like the giant turbos still only use KF40 outlet typically 25-Mar-20 02:02 PM But it's just the forces involved due to F=-kx mean that a smaller spring action is a lot easier to make than a large range of motion 25-Mar-20 02:02 PM so a lot of cheap valves only move a little bit 25-Mar-20 09:03 PM hey kid.. ya like flange clusters? https://www.ebay.com/itm/254244622979 25-Mar-20 09:10 PM 19.5" in diameter 25-Mar-20 09:10 PM Hugeeee 25-Mar-20 09:10 PM But yes I like that. Stuff pointed at the centre ? YEAH 25-Mar-20 10:53 PM That flange may qualify as a sext. 27-Mar-20 11:51 AM https://www.ebay.com/itm/ID-11-Chernobyl-Soviet-dosimeter-Geiger-counter-key-ring-radiation-meter-USSR/223626254877?_trkparms=aid%3D1110007%26algo%3DHOMESPLICE.DISC%26ao%3D1%26asc%3D20200220090753%26meid%3D62ae2d9b5b7741b6a0609a09a1d11fe0%26pid%3D100009%26rk%3D1%26rkt%3D1%26sd%3D362778453868%26itm%3D223626254877%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3Ddefault&_trksid=p2047675.c100009.m1982 27-Mar-20 11:51 AM A friend pointed this out to me. 27-Mar-20 11:52 AM what are they, tld? 27-Mar-20 11:52 AM Radiophotoluminescent dosimeters. 27-Mar-20 11:52 AM Use aluminum phosphate glass doped with silver. 27-Mar-20 11:52 AM The more radiation they absorb, the more they luminesce under UV. 27-Mar-20 11:53 AM ohh, nice 27-Mar-20 11:53 AM I hadn’t heard of RPL dosimeters before today. 27-Mar-20 11:59 AM We use something similar where I work, optically stimulated luminescent crystals but I recall they’re read out with a laser. 27-Mar-20 12:02 PM What do people think a match network is worth? A seller is offering to sell me a network, two controllers, and a vac chamber (with what appears to be ICP coils present) for $850 shipped 27-Mar-20 12:02 PM I haven't been able to get manuals for the items, so I'm a little unsure of the value 27-Mar-20 12:02 PM (which could just be because the company is not in their office this week or something) 27-Mar-20 02:07 PM How automatic is the matcher? for what loads? what frequency and most importantly, what power level? 27-Mar-20 02:07 PM Because if it has vacuum variables (more than one) and a roller inductor and is automatic it's quite possibly worth it if it works. 27-Mar-20 02:07 PM Always do look at amateur radio suppliers for potentially cheaper RF stuff. As hams are notoriously cheap. 27-Mar-20 03:35 PM Haven't got the docs, so not completely sure 27-Mar-20 03:35 PM I'm guessing at least 1kW 30-Mar-20 04:07 PM Just scored a new stainless KF-25 cross shipped for $10 30-Mar-20 04:08 PM Nice 30-Mar-20 04:14 PM Wow! 30-Mar-20 04:14 PM I love the 5-way ones, so funny 30-Mar-20 04:31 PM https://www.ebay.com/itm/112975699279 30-Mar-20 04:33 PM $40 shipping here, haha 30-Mar-20 04:33 PM Also have plenty. 30-Mar-20 06:29 PM Sweet, $10 and free shipping 30-Mar-20 06:29 PM I grabbed 2 30-Mar-20 08:38 PM nice grabbed one! 02-Apr-20 03:52 AM https://www.ebay.com/itm/202022167271 300ps x-ray vacuum photodiodes, apparently similar to the XRD-31s NIF uses/used in their DANTE soft x-ray spectrometer. wish i could justify the $$ for one rn tbh 02-Apr-20 04:15 AM oh man 02-Apr-20 04:15 AM you can't just post stuff like this here XD 03-Apr-20 10:29 PM https://www.ebay.com/itm/Applied-EPI-Veeco-Molecular-Beam-Epitaxy-Ion-Effusion-Source/283735420254 03-Apr-20 10:29 PM Pretty neat, part of a retractable MBE Knudsen effusion source cell. I believe they deliver cooling water through the side of the flange, fairly unique solution 03-Apr-20 10:29 PM This is probably what the whole system looked like 03-Apr-20 10:29 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/x7gksesyl2mgndgtrcjk-88647.png 03-Apr-20 10:29 PM Should still be useful as a feedthrough though. I'm not sure how far the water cooling extends into the heat shield, so it might be more of a space hinderance than anything when repurposed. Given the heat shield is welded at the base, there may be no way to dismount it 03-Apr-20 10:56 PM https://www.ebay.com/itm/GATAN-PRECISION-ION-MILLING-MACHINE-WITH-CHAMBER/273816546659 Really cheap spherical chamber, electronics look way too old to be useful but eh. 03-Apr-20 10:57 PM heh... way too old to be useful means old enough to be simple to reverse engineer/hack/reuse 03-Apr-20 10:57 PM I mean new stuff is all just highly integrated stuff that is kinda hard to do anything else with except its original intended job. 03-Apr-20 10:57 PM either way neat little chamber 03-Apr-20 11:01 PM Almost wish It'd be practical to ship here to Norway, but I doubt it... 03-Apr-20 11:02 PM If you're paying more for shipping than for the item itself, either you got an incredible deal or it's a really bad idea 04-Apr-20 11:47 AM That ion mill has something like a 2 micron spot size 04-Apr-20 11:47 AM Couple orders of magnitude away from a proper "FIB" spot size 04-Apr-20 11:47 AM But still potentially useful 04-Apr-20 11:47 AM When I Googled it like a week ago I seem to have found it could do ion imaging as well 04-Apr-20 11:47 AM So it's a crude ion microscope 04-Apr-20 11:47 AM That seller has a lot of similar stuff from time to time 14-Apr-20 04:12 PM Scored an LPKF Protoflow S for $500 at auction. Upping my game in electronics prototyping. 15-Apr-20 01:49 AM https://www.ebay.de/itm/274329419180 Loads of He3 counters for cheap on ebay Here's a datasheet for them: https://consensus-group.ru/radiation-counters/neutron-counters/corona-counters/209-snk-30200-46om 16-Apr-20 08:14 AM Dropped the price on this by E500 cause it didn't sell yet: https://www.ebay.com/itm/Stanford-Research-SR830-DSP-Dual-Phase-Lock-In-Amplifier-1-mHz-to-102-4-kHz/264617573051 16-Apr-20 08:14 AM ebay is a tad annoying in that dutch ebay does not support "sell internationally" (it can still sell internationally, but does not appear in US search results) 16-Apr-20 12:24 PM oh I have spent a lot of time staring at those numbers 16-Apr-20 01:36 PM Just made my first EquipNet auction purchase. It is dangerously easy compared to other auctions I've done. 16-Apr-20 03:20 PM Interesting, I get emails from them 17-Apr-20 01:16 PM https://www.ebay.de/itm/202964828527 Small He3 Neutron detector, might be interesting for the americans here 17-Apr-20 01:16 PM https://consensus-group.ru/radiation-counters/neutron-counters/corona-counters/236-snk-18210-90om Here's a datasheet for it 17-Apr-20 01:16 PM oh wow 9 bar 17-Apr-20 01:18 PM oh that's a pretty good price too.. i have an SNM-17 17-Apr-20 01:18 PM paid twice that for it >__>` 17-Apr-20 01:19 PM well a second one never hurts 17-Apr-20 01:19 PM I'm still kicking myself for not buying one of the little neutron scintillators I saw for sale last summer 17-Apr-20 01:19 PM now is your chance to clear your conscience 17-Apr-20 01:20 PM heh 17-Apr-20 01:20 PM i have two of those little scintillators.. from the exploranium isotope identifier, yeah? i still have to, like.. dig out the busted pins and resolder it to some kinda fixture 17-Apr-20 01:21 PM Eh, right now I've got a project already. Just getting a well detector set up. Though I have been reading some very interesting stuff about CsPbBr3 and MAPbI3 crystals in the last few days 17-Apr-20 01:21 PM Yeah, those are the ones 17-Apr-20 01:21 PM suepr fragile 17-Apr-20 01:21 PM oh your pins broke off as well? 17-Apr-20 01:21 PM I have two here with a lot of pins missing XD 17-Apr-20 01:21 PM and I thought it was just me 17-Apr-20 01:22 PM yeah you look at 'em funny and they fall off. like cranefly wings 17-Apr-20 01:22 PM or even dare to unsolder them 17-Apr-20 01:22 PM https://www.ebay.com/itm/High-Sensitivity-Helium-3-He-3-Neutron-Detector-Proportional-Counter-Tube-SNM-17/143575071235 17-Apr-20 01:22 PM sadly I have had no luck soldering to the stumps 17-Apr-20 01:23 PM bit better price on the SNM-17 for USA based people 17-Apr-20 01:23 PM ohh, even cheaper 17-Apr-20 01:23 PM still more than I paid per detector 17-Apr-20 01:23 PM man that seller is claiming a lot of crap in the description 17-Apr-20 01:24 PM yeah i wouldn't trust anything they are claiming, but the tube i got seems fine 17-Apr-20 01:24 PM was around $65 shipped to my door after taxes and everything when i got mine 17-Apr-20 01:24 PM https://consensus-group.ru/images/ip/counters/docs/SNK-18-210-9,0-OM.pdf Use this datasheet 17-Apr-20 01:24 PM actually run it in corona mode 17-Apr-20 01:24 PM because that's what it's made for 17-Apr-20 01:25 PM yeah i had already seen the datasheet before i ordered so i just kinda scoffed at the listing 17-Apr-20 01:25 PM no immediate plans but i figured it was worth grabbing one before they disappear from eBay 17-Apr-20 01:26 PM it's always good to hoard detectors 18-Apr-20 03:39 PM Hahaha eBay seller just offered me 20% discount on a $50k SEM.... now the low low price of $40k :O 18-Apr-20 03:40 PM what a bargain! 18-Apr-20 03:40 PM Full 4mJ/150fs/1KHz TiSaph amplifier system for 45k, requires ~$500 PSU repair https://www.ebay.com/itm/153816698346 18-Apr-20 03:40 PM The oscillator is the same as in my system, we replaced the PSU two years ago with a $350 part. Easy. 19-Apr-20 04:01 AM https://www.ebay.com/itm/114190786423 I think that's an ionisation chamber, but I can't find any data on them 21-Apr-20 12:15 PM https://www.ebay.com/itm/254268225314 21-Apr-20 12:40 PM A friend in the US acquired a large lot of NIM modules. Want any? 21-Apr-20 12:40 PM Ortec 426 Linear Gate 433 Sum-Invert Amplifier 441 Ratemeter (analog) 444 Gated Biased Amplifier 453 Constant Fraction Timing Discriminator 715 Dual Counter/Timer (digital) 770 Counter (digital) 772 2x Counter (digital) 406 SCA 420 Timing SCA 421 Integral Discriminator 428 Detector Bias Supply (0-2000V) 444 Gated Biased Amplifier 455 Timing SCA 460 2x Delay Line Amplifier 485 Amplifier 739 Amplifier Ortec 77 Counter 416 Gate and Delay Generator 455 Timing SCA 406A SCA 486 Amp PHA 441 2x Ratemeter (analog) 403A 2x Time Pickoff Control 426 Linear Gate Canberra 2055 3x Logic Shaper and Delay 2037A 2x Edge/Crossover Timing SCA 2160 Pulse Shape Disc 2012 Amplifier LASL 8048 Scaler-Mixer Joerger V9 Visual Scaler (digital) ? Q-30848 Fast NIM Logic Adj Delay Ortec 444 Gated Biased Amplifier 9302 Amplifier Discriminator Tennelec Dual Logic Unit Total Energy (disc?) TC215 Delay Amplifier TC252 2x Biased AMplifier TC595 Auto-Ranging Ratemeter LASL 8048 Scaler-Mixer (coin gate input) CI Sturrup? 1415 Amplifier Tennelec TC205A 2x Linear Amplifier TC215 2x Delay Amplifier TC590 2x Ratemeter TC310 Linear Gate Stretcher TC545 Counter-Timer TC595 Auto-Ranging Ratemeter TC217 Differential Amplifier Tennelec TC450 2x SCA TC205 Linear Amplifier TC217 Differential Amplifier TC526 Ratemeter TC550 Scaler TC202BLR Linear Amplifier TC252 Biased Amplifier TC441 SCA TC265 Low/Wide B Amp/SCA 21-Apr-20 12:42 PM backs up truck One of everything please 21-Apr-20 12:42 PM do you know how they are planning on selling things ? 21-Apr-20 12:44 PM i'm interested in the ortec 453, the canberra 2160, the two canberra 2037As, and an ortec 403a 21-Apr-20 12:44 PM how much does your friend want for it? 21-Apr-20 12:44 PM I'd be interrested in the ortec 428 and 444, as well as the tennelect TC252 21-Apr-20 12:47 PM Sounds like $25-$30 each, delivered, at least in US. He can do some rudimentary testing, like make sure ratemeters, scalers, and amps seem to work. Not sure about shipping to Germany, @GigaSquirrel 21-Apr-20 12:47 PM I mean, it’s possible but it may be costly. 21-Apr-20 12:47 PM gonna need like one or two more bins for everything >__> 21-Apr-20 12:48 PM I’d also be interested in the 428 if shipping doesn’t work out 21-Apr-20 12:49 PM you can have that one if you need it, for me it's more of a "nice to have" 21-Apr-20 12:55 PM Actually, might not be what I'm looking for 21-Apr-20 01:39 PM Ok, let’s say I want to do pair production experiments. 21-Apr-20 01:39 PM I need two SCAs to filter 511 keV 21-Apr-20 01:39 PM But then what? How do I detect coincidence? 21-Apr-20 01:39 PM Would any of this NIM cornucopia do it? 21-Apr-20 01:49 PM yeah, some of what i'm interested in is for coincidence detection; -> #radiation 23-Apr-20 06:03 PM https://www.ebay.com/itm/11503-HITACHI-TM-1000-TABLE-MICROSCOPE-PFEIFFER-VAC-PUMP-MANUAL/202939148129?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D225085%26meid%3D805830071cb64d518f5b9bddaa637208%26pid If anyone is interested in a cheap desktop SEM, this one looks pretty tempting. I believe these need calibration data that is stored on a laptop (missing)... %3D100675%26rk%3D1%26rkt%3D15%26mehot%3Dnone%26sd%3D202939148129%26itm%3D202939148129%26pmt%3D0%26noa%3D1%26pg%3D2380057%26brand%3DHitachi&_trksid=p2380057.c100675.m4236&_trkparms=pageci%3A3f59d761-85c7-11ea-9fc4-74dbd1802a23%7Cparentrq%3Aa9b4ef921710ac3e258042b6ffe2eb05%7Ciid%3A1 23-Apr-20 06:39 PM Hmm, my FIB was bought by hitachi 23-Apr-20 06:39 PM I haven't had the greatest support from them so far 23-Apr-20 06:39 PM Lots of buggy software glitchiness 23-Apr-20 06:39 PM And generally slow response since I don't have their $100k/year service contract 23-Apr-20 06:39 PM Lol "Seller Notes I HAVE NO IDEA HOW TO RUN IT" 23-Apr-20 06:39 PM I hate how microscopes say 10000x 23-Apr-20 06:39 PM I have no idea how to convert that to resolution 23-Apr-20 06:39 PM At least not without doing googling 23-Apr-20 06:54 PM Random website says the tm-1000 gets 30nm resolution 23-Apr-20 10:43 PM It's cute though 24-Apr-20 03:33 AM I'd be more likely to take it of it was a third the price 24-Apr-20 03:33 AM Chamber might be smaller than my current SEM which has probably similar resolution, and being analog with schematics, possibly more "open-source" 24-Apr-20 03:53 AM Super sketchy and likely fake eBay listing for too good to be true welder https://www.ebay.com/itm/TIG-WELDER-PRIMEWELD-TIG225X-225-Amp-IGBT-ACDC-Tig-Stick-Welder-with-Pulse-CK17/313061699773 24-Apr-20 03:53 AM For $23 I am trying my luck... Most likely gonna get cancelled by eBay I'm guessing 24-Apr-20 03:53 AM If not, I'll complain to eBay and get my money back in a month or so 24-Apr-20 03:53 AM @Nixie I blame you! (I reviewed the eBay link to yours that you posted a while back, and it was in similar items after a page or two) 24-Apr-20 03:53 AM Yours seems like a pretty darn good price compared to what I've been seeing around the U.S. 24-Apr-20 04:24 AM Bahaha, for 23$, worth trying 24-Apr-20 04:24 AM I like that has few dials, so it's more repeatable. 24-Apr-20 04:24 AM Not sure if better, but for the money/reviews I read, I think I got a good item. 24-Apr-20 04:24 AM Start looking into argon and electrodes 24-Apr-20 05:02 AM The pedal looks super nice. I definitely need one for my TIG, but I don't know the pinout for the connector, and I don't want to mess the machine up. 24-Apr-20 12:30 PM >.> I'll also take a shot at this ridiculous welder 24-Apr-20 12:30 PM fingers crossed 24-Apr-20 12:30 PM I actually was considering roughly that same model for a My First Welder some months ago 24-Apr-20 12:30 PM inb4 it's just a big soldering iron that trips your breakers on the regular 24-Apr-20 12:31 PM Wait, 23 dollars? 24-Apr-20 12:31 PM at that price i'd happily rip it open for parts 24-Apr-20 12:31 PM yeah lmao 24-Apr-20 12:31 PM Dear god 24-Apr-20 12:32 PM how do you even ship something for that cheap 24-Apr-20 12:32 PM you don't 24-Apr-20 12:32 PM this seller has a whopping 49 sales 24-Apr-20 12:32 PM it's almost certainly a scam 24-Apr-20 12:37 PM Or a “how to build a welder” instruction manual 24-Apr-20 12:40 PM Psure its a fake account... I have seen and tried many too good to believe deals like this on ebay from accounts with like 50 feedback... check feedback... all t-shirt sales... 24-Apr-20 12:40 PM But yea ebay's money back thing is quick and painless 24-Apr-20 12:40 PM I do need to get a good welder. 24-Apr-20 12:44 PM definitely a fake account... their feedback is all for some v neck shirt and they have 4 different types of welders listed up around that price point https://www.ebay.com/sch/shiao96368/m.html?_trksid=p3692 24-Apr-20 12:44 PM wonder if they will even ship anything out or if it is just a numbers game where they hope people forgot they ordered it and do not dispute things 24-Apr-20 12:46 PM only ebay scams I've ever had were ones they just never shipped anything 24-Apr-20 12:47 PM when they ship you a box of random crap it is harder to get your money back, sometimes 24-Apr-20 12:47 PM I bought an n64 steering wheel once and it was 3 months late... had forgotten and never disputed it. The person included a note saying they forgot to ship it cause their dad died and included a bunch of games for free 24-Apr-20 01:45 PM My new (to me) lab air compressor 24-Apr-20 01:45 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_2515-EB51E.jpg 24-Apr-20 01:45 PM Cabinet is filled with acoustic insulation, so the noise is all low frequency rumbles. Pretty quiet. 24-Apr-20 04:39 PM https://www.ebay.com/itm/Vintage-NUTEX-Radium-Prophylactic-Tin-Condom-Box-HTF/133393181507 24-Apr-20 04:40 PM That name is perfect 24-Apr-20 04:40 PM too bad it's empty 24-Apr-20 04:41 PM Since it doesn’t say it contains radium, I imagine they don’t.... 24-Apr-20 04:42 PM Condition is Used. snrk 24-Apr-20 04:52 PM Keeping that tin on one’s night stand would probably be very effective birth control, even though it’s empty. As soon as someone sees it, they’ll suddenly remember they have plants to water or a pet to feed.... 24-Apr-20 04:54 PM ouch 24-Apr-20 09:22 PM Hahahahaha. Maybe they glowed in the dark! I need to read the book Radium Girls. I hear it’s sad but a good read. It’s about the women who used to paint the radium on clock dials and gun scopes and the like and how they were treated by the industry and society when they started getting sick. 24-Apr-20 09:34 PM Oh man. That would make a great graduation present for Marty. Do you mind if I bid on it for him? 24-Apr-20 09:58 PM Marty.... McFly? 24-Apr-20 09:58 PM There's a guy at work who goes by Marty, but it's his middle name, and it's always odd when adding him to emails with people who might not know who he is 24-Apr-20 09:58 PM Since I think our address book system only shows his middle initial 24-Apr-20 10:18 PM NuclearAnthro? I vote go for it 24-Apr-20 10:18 PM This is #swap-meet, so.. 24-Apr-20 10:18 PM (also that's incredible) 24-Apr-20 10:27 PM Interesting item: https://www.ebay.com/itm/263922960687 Not sure how the interface works, though. 24-Apr-20 10:31 PM Those are pretty well documented I am pretty sure, that one has all the driver stuff behind to do the text stuff... 24-Apr-20 10:31 PM But yea a lot of people have played with those 25-Apr-20 11:10 AM And they're all gone. Guess they're a hot item 25-Apr-20 11:35 AM https://www.orau.org/ptp/collection/brandnames/radium-condoms.htm 25-Apr-20 11:35 AM From what I can gather, they don’t contain radium. 25-Apr-20 11:47 AM The packaging doesn’t claim it contains radium, and given how expensive it is, if it actually contained it, they’d say so. 25-Apr-20 11:47 AM (And if it didn’t contain radium, they might say it did too.... So without the claim, if probably doesn’t contain radium, it’s just a marketing gimmick word in the same way a platinum credit card isn’t made out of platinum....) 25-Apr-20 11:53 AM I thought the credit card thing was more like it's capable of buying platinum 25-Apr-20 11:53 AM So maybe the idea is the condoms allow you to do stuff that would normally be as dangerous as playing with radium 25-Apr-20 11:53 AM (i.e. being permiscuous) 25-Apr-20 11:58 AM It's an antique and yes, once upon a time in medical quackery marketing land, the condoms did contain radium. 25-Apr-20 12:40 PM Yeah nowdays only thorium. 25-Apr-20 12:45 PM They did? Do you have documentation about that? All I could find was an NRC publication https://www.nrc.gov/docs/ML1008/ML100840118.pdf that has no source information and says the manufacturer made no representation they were radioactive. 25-Apr-20 12:45 PM Now this product definitely was hot.... https://carlwillis.wordpress.com/tag/radiendocrinator/ 25-Apr-20 02:35 PM I can only go by the traditional wisdom of my field and those who have had the pleasure of doing legacy decon projects. And museum exhibits on medical quackery. Modern thoriated condoms are hard to find, but thoriated cock rings? It's nice to have people who make sure my curio cabinet is full of amusements. 25-Apr-20 02:44 PM https://www.ebay.com/itm/233568156335 Group buy? 25-Apr-20 02:44 PM https://www.ebay.com/itm/143588086424 Also this thing is cute 25-Apr-20 04:49 PM Tube furnace for ~$100 with shipping? https://www.ebay.com/itm/Fisher-Scientific-Hevi-Duty-Type-70-Electrical-Tube-Furnace/293026098008?hash=item4439b76b58:g:xCQAAOSwhyVdfqev 25-Apr-20 04:50 PM afaik the tubes can be pretty expensive 25-Apr-20 04:50 PM but I'd go for it 25-Apr-20 04:50 PM maybe needs new filament and some work in general, but for that price... 25-Apr-20 04:50 PM Oh cool, hmmm, I wonder how far a drive it would be 25-Apr-20 04:50 PM I'm more saying someone here should go for it. 25-Apr-20 06:57 PM https://www.ebay.com/itm/254578587080 25-Apr-20 06:57 PM I own one of these, BTW.... 25-Apr-20 07:04 PM Damn 25-Apr-20 07:04 PM That’s so cool 26-Apr-20 09:32 PM Yeah. I’ve been bit by the Manhattan Project collecting bug. 26-Apr-20 09:32 PM I have managed to acquire the trifecta: Graphite block in lucite paperweight, Vartanian lithograph, and mechanical pencil leads made from CP-2 graphite. (I believe the latter were presented as part of a gift set with a mechanical pencil. I just have the tube of leads.) 26-Apr-20 09:42 PM Wheeler sat at my dinner table 26-Apr-20 10:05 PM Cool 27-Apr-20 12:04 PM I am selling two meters of mine, a HP 3478A that needs a new frontend asic (I have two asics, one doesn't do resistance, the other one doesn't do current) and a Keithley 616 that behaves weird, but I don't know what exactly the issue is or if I'm just too dumb to work with it 27-Apr-20 12:04 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20200427_205159-0D7AF.jpg 27-Apr-20 12:04 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20200427_205213-18BBA.jpg 27-Apr-20 12:04 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20200427_205553-01C63.jpg 27-Apr-20 12:04 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20200427_205653-72FDE.jpg 27-Apr-20 12:04 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20200427_205659-D30D4.jpg 27-Apr-20 12:04 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20200427_205749-466D3.jpg 27-Apr-20 12:04 PM I was thinking on the order of 50 bucks a pop, negotiable 27-Apr-20 12:04 PM shipping from germany 28-Apr-20 05:19 AM https://www.troostwijkauctions.com/nl/lasrobot/03-32393-31102-6338146/ 29-Apr-20 07:29 AM Oh no.... 29-Apr-20 07:29 AM I had a friend who bought a massive Kuka automotive robot arm. Just because it was available for cheap and he could. 29-Apr-20 07:29 AM WHY??? Once the novelty wears off, you've got maybe a metric ton of useless gear. 29-Apr-20 10:53 AM breakfast cooking robot 29-Apr-20 10:56 AM welding "3D Printer" 29-Apr-20 10:56 AM slapping unwanted guests 29-Apr-20 10:56 AM heat seeking fire extinguisher 29-Apr-20 11:18 AM https://www.ebay.com/itm/153446253696 29-Apr-20 11:19 AM wat 29-Apr-20 11:19 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screen_Shot_2020-04-29_at_11.19.31_AM-5046F.png 29-Apr-20 11:20 AM https://www.ebay.com/itm/ALUMINA-CERAMIC-ISOLATOR-HIGH-VOLTAGE-CONTACTS-ELECTRICAL-PART-AS-PIC-8-A-58/153446207317 29-Apr-20 11:20 AM ?_? 29-Apr-20 11:21 AM wat @qualia welcome to the european life 29-Apr-20 11:50 AM But it's already in the US.... 29-Apr-20 11:50 AM TIL you can just make wobble sticks with some short CF hose and a bit of stick welded to a blank https://www.ebay.com/itm/mdc-vacuum-1-33-conflat-homebrew-wobble-stick-bellows-assembly/254107367347 29-Apr-20 12:56 PM I think this guy has this listed wrong. https://www.ebay.com/itm/Noran-Instruments-455A-liquid-storage-unit-lab-equipment-/254319558169 29-Apr-20 01:11 PM Wow. $202.50 and it didn’t even include any condoms. 29-Apr-20 01:11 PM The Vartanian CP-1 lithograph did not sell. Opening bid was $350. Now it’s listed at $475 Buy It Now w/ Make Offer. 29-Apr-20 01:15 PM "It didn't sell at that price so we made it more expensive" 29-Apr-20 01:17 PM Oh this guy has a history, then? 29-Apr-20 01:18 PM "Some people want to spend $5, some people want to spend $10." 29-Apr-20 01:18 PM I have re-listed things on craigslist for higher and had multiple offers after weeks with no emails 29-Apr-20 01:18 PM and afaik craigslist barely does anything in terms of algorithms for who sees what ? 29-Apr-20 01:20 PM i almost bought that lithograph but the missus firmly discouraged it 29-Apr-20 01:22 PM what a buzzkill 29-Apr-20 01:24 PM Nobody on the reactor staff went for it either 29-Apr-20 01:24 PM she's like 'oh you dont need it' 'we're about to enter a recession' 'didn't you just pay off all your credit card debt' etc 29-Apr-20 01:24 PM Though some people did think it would be good for the control room. 29-Apr-20 01:24 PM plagued by voices of reason lately u .u 29-Apr-20 01:25 PM sorry again 29-Apr-20 01:33 PM https://www.ebay.com/itm/KESTER-18-7068-0093-WIRE-SOLDER-093-SAC305-SOLID-LEAD-FREE-1LB-ROLL-2-5mm/174088823123 some kind soul divvied up a giant spool of what seems like an ideal solder for UHV work and is selling 1lb spools for not too much, i think.. unfortunately it's a huge diameter 29-Apr-20 01:33 PM bring your own flux 29-Apr-20 01:34 PM how's this ideal? 29-Apr-20 01:34 PM no lead, no flux core 29-Apr-20 01:34 PM tin/silver/copper all seem to be pretty vacuum compatible 29-Apr-20 01:34 PM I thought lead has a low vapor pressure? 29-Apr-20 01:34 PM and yeah, no flux core, but you'll still need flus so I don't really see the advantage tbh 29-Apr-20 01:35 PM SOP seems to be 'use an aggressive acid flux you can immediately clean off' 29-Apr-20 01:35 PM could be wrong though 29-Apr-20 01:36 PM sop? 29-Apr-20 01:36 PM standard operating procedure 29-Apr-20 01:36 PM ahh 29-Apr-20 01:36 PM I guess that would make sense 29-Apr-20 01:36 PM thanks for the reminder, I wanted to try making some ZnCl2 flux 29-Apr-20 01:36 PM hm, if I start now looking through a chemistry store it will kind of escalate i fear 29-Apr-20 01:36 PM all the glassware 29-Apr-20 01:36 PM No, I must stay strong! 29-Apr-20 01:48 PM voice of reason strikes again! 29-Apr-20 01:48 PM . o O (also i think Zn is a no-no in UHV too) 29-Apr-20 02:03 PM Yeah it's weird, don't know what's happening to me 29-Apr-20 02:03 PM also, after cleaning the flux no Zn should be left 29-Apr-20 03:07 PM I've done a bit of soldering in vacuum with indium, it helps if you have the entire thing pre-heated. The mechanical strength of the bond is pretty much non-existent 29-Apr-20 03:07 PM Do you have to cover a SiLi EDS detector in storage? @rdpierce 29-Apr-20 03:07 PM I've seen one that's not covered and just sitting in a box like that one on eBay 29-Apr-20 03:07 PM Also where did you get that price from? For me the listing is for $295 29-Apr-20 03:07 PM It's from 1990 I believe... And seems like the seller will take $250 at the very least 29-Apr-20 03:07 PM Hmm, I'm tempted... Must stay rational 29-Apr-20 03:38 PM Re: the lithograph, keep in mind that it was originally an auction starting at $350 minimum bid. 29-Apr-20 03:38 PM So it had a floor price but no ceiling 29-Apr-20 03:38 PM Now it has a ceiling but no floor. 29-Apr-20 03:38 PM So the seller might jump at, say, a $300 offer. 29-Apr-20 03:38 PM @Mason_Yu I don't know. 29-Apr-20 03:42 PM Ah you were referring to a different listing, I didn't scroll up far enough 29-Apr-20 03:44 PM I believe the known good one we have has a Plexi cylinder we keep over it when it isn't attached to a chamber 29-Apr-20 03:44 PM Yeah that's a good idea, since it is a beryllium window after all, but it can sit in atmosphere for no problem 29-Apr-20 03:45 PM We got a SEM with a SiLi sitting at atmosphere for years. Still worked. 29-Apr-20 03:45 PM @qualia How does the condition of your EDS detector compare with this Noran one? I sent the seller a message to take a look at the window end at least. I believe it should be possible to make an adaptor to put it on my SEM, and I've decided to start on the perilous journey of getting digital acquisition working on it 29-Apr-20 03:48 PM I mean, what's ideal vs. what doesn't kill something are two very different things. 29-Apr-20 03:49 PM my two EDS detectors have the dewars at-atmosphere; one has a blown window, and the other may have a blown FET/something wrong with the preamp. i don't have the LN2 to bring one down to proper testing, nor do i (yet) have the right adapter to pump down/bake out/re-seal a dewar 29-Apr-20 03:49 PM Also with eBay detectors sold by non-technical sellers, you have no idea if the window is popped. 29-Apr-20 03:49 PM Let alone the FET 29-Apr-20 03:49 PM ... so, that'un's maybe in better condition, maybe. maybe maybe. but both of mine were free, so! 29-Apr-20 03:51 PM Ah yeah, probably wise to wait for free stuff... My plans to salvage things from various labs has been foiled, since the entire school is pretty much closed for the summer, the beginning at least 29-Apr-20 03:54 PM My advice to people is to ask the seller for a pic of the window, keeping in mind that you'll probably have to describe where the window is. 29-Apr-20 03:54 PM This reminds me of a similar situation that went pear shaped. 29-Apr-20 03:54 PM eBay seller was selling a dewar. 29-Apr-20 03:55 PM Already did, I would be surprised if he actually doesn't know that thing is an EDS detector 29-Apr-20 03:55 PM Seller gave no indication of knowing there was an Ortec HPGe in it 29-Apr-20 03:55 PM Listing said nothing of the sort 29-Apr-20 03:55 PM I mentioned it on a gamma spec mailing list 29-Apr-20 03:55 PM Someone put in an offer 29-Apr-20 03:56 PM @Mason_Yu one would think there being less people present would make it a better time to go take stuff ¯\_(ツ)_/¯ 29-Apr-20 03:58 PM Then all of a sudden the thing had its description changed with the HPGe info, and its price doubled. 29-Apr-20 03:58 PM And the seller was snotty to my friend who made the offer. 29-Apr-20 03:58 PM Lol, security is still there, see them patrolling around all the time 29-Apr-20 03:58 PM I think sometime from the group tipped off the seller to screw over my friend... 29-Apr-20 03:59 PM Oh I didn't actually mention SiLi or EDS or SEM to this guy, but he sells a lot of (overpriced) NIM and vacuum stuff, so I think he might have come across something like this at some point in the past 29-Apr-20 04:05 PM The overpriced Nim is really dumb. I'm certain the guy has no idea what he's got, but oooh! It's science equipment! That means someone somewhere at area 51 probably reeaaally needs it! 29-Apr-20 04:27 PM expired: weird nim science module $50 tired: weird nim science module $750 wired: nim srs ecl gated boxcar averager $750 inspired: nim srs ecl gated boxcar averager please dont do this to yourself you could implement an entire bin of equipment on an FPGA and pay less in hw and power costs $50 29-Apr-20 06:16 PM I put a paper on the implementation of an MCA on an FPGA in a Zynq SoC using its internal ADC in #resources @qualia 29-Apr-20 06:16 PM Which reminds me that I still have that Zynq dev board sitting on my desk from 2 weeks ago 29-Apr-20 06:16 PM I have no motivation to go back to Vivado though... 29-Apr-20 07:03 PM Quartus is like 10 gig installed 29-Apr-20 07:03 PM Needed that for my digital logic design class. 29-Apr-20 07:03 PM They upgraded us away from 74 series logic and breadboards to drawing out logic gates and simulating / downloading to FPGA 29-Apr-20 07:28 PM heh, I have quartus and vivado installed, its like 40-50~ GB total between the both of them 30-Apr-20 01:28 PM I had my wife buy a few of the lattice ice line devboards to get away from quartus, etc 30-Apr-20 01:28 PM Icebreaker and ulx3s 01-May-20 10:20 AM https://www.ebay.com/itm/143588067792 I love how ebay is getting flooded with He3 atm 01-May-20 10:22 AM someone must have found another warehouse? 01-May-20 10:23 AM Hm, I might need to get myself one just for the hell of it 01-May-20 10:23 AM I've ordered 10 XD 01-May-20 10:23 AM not of that type 'tho 01-May-20 10:26 AM What are you going to do with that many anyway 01-May-20 10:28 AM a friend of mine wanted a few and I kinda want to replicate that "nuclear device detector" suitcase 01-May-20 10:28 AM https://4hv.org/e107_plugins/forum/forum_viewtopic.php?140298 07-May-20 02:19 PM https://www.ebay.ca/itm/STEEL-ISO-250-K-TEE/362093654424?hash=item544e76b198:g:QYAAAOSw2AFZrx~j 07-May-20 02:20 PM oh, sweet 07-May-20 02:20 PM just 300 in shipping and import 07-May-20 02:20 PM book a cruise and pick it up in person 07-May-20 02:22 PM no better time to jump in a plane for hours than now 07-May-20 02:23 PM this is actually sweet, LN2 cold trap flange: https://www.ebay.ca/itm/Cold-trap-for-LN2-ISO-250-178-mm-high-Flange-OD-334-mm-Flange-ID-250-mm/123220286616?hash=item1cb0805c98:g:GW0AAOSwNJNbNmC- 07-May-20 02:23 PM ooh and a weird huge CF/ISO elbow thing: https://www.ebay.ca/itm/L-1325M-QF250-E90K-Kurt-Lesker-Custom-Miter-90-CF-13-1-4-ISO250-Elbow/122760569465?hash=item1c9519a279:g:XmgAAOSwQjNW~T6o 07-May-20 08:24 PM that's a stylish elbow 08-May-20 05:52 AM Huh that would make a nice UHV chamber in its own right. 08-May-20 05:52 AM @idmb what is the appropriate use for that form factor of cold trap? Is there supposed to be a cylinder of molecular sieves resting inside the coil? 08-May-20 05:52 AM The feed-throughs look like they might be a bit awkward thermally though-- LN2 pipe in direct contact with wall 08-May-20 10:33 AM those feedthroughs are an old standard for closed-cycle chillers 08-May-20 10:33 AM that specific one I don't know - similar ones with a reservoir that you pour LN2 into are very common, but that one is clearly meant to have it circulating constantly 08-May-20 10:33 AM but with an ISO-250 chamber this would let you cryopump most gasses with a huge pumping speed, letting you do probably at least -7 processes quickly with just a roughing pump, giant gate valve, and the cost of a ton of LN2. 08-May-20 01:00 PM I had a chance to see a cryopump at Argonne that recirculated LN2. Cool tech. Pun intended. 08-May-20 01:17 PM I think they're pretty uncommon because if you're gonna go to all that work, you might as well use LHe 08-May-20 01:21 PM LHe??? That’s some serious $$$. 08-May-20 01:21 PM I have to wonder if one of the factors in shutting down the Tevatron was the skyrocketing He cost. 08-May-20 01:22 PM nah in closed cycle systems the helium is a tiny fraction of the cost 08-May-20 01:22 PM so cheap that when moving from one system to another, we disconnect the compressor from the cryopump/cold head and purge / refill the system with He. You put room temp helium in and the compressor does the work 08-May-20 01:23 PM We had a debate with the high altitude balloon group at Adler about swapping He for H due to cost. 08-May-20 01:23 PM it's manufacturing the compressor and cryopump/cold head that is pricey 08-May-20 01:23 PM and I don't think that manufacturing scales down too much when you switch to LN2 08-May-20 01:23 PM Hindenburg flashback 08-May-20 01:23 PM People were afraid about static electricity and causing a mini Hindenburg. 08-May-20 01:23 PM Although to be fair, the National Weather Service launches their balloons with hydrogen. 08-May-20 01:23 PM They’ve never had an accident. 08-May-20 01:34 PM I know a group that feeds their LHe recirculator with exhaust from the NMR room. You don't lose much at all if you have a recirculating system. And LN2 is so cheap that I'm not really sure why you'd go through all the headache of making a closed system for it. 08-May-20 01:35 PM With a cold trap like the one I linked directly on the inlet of a diffusion pump 08-May-20 01:35 PM you'd go through LN2 so fast 08-May-20 02:46 PM I guess, but it still seems weird to spend so much money and time worrying about conserving something that's 19 cents a liter and is quite literally made from air 08-May-20 02:46 PM And that's with the higher pressure tank. Too lazy to check how much the lower pressure one is but it's slightly cheaper 08-May-20 02:46 PM You'd probably need the pressure to get the LN2 through that cold trap anyway 08-May-20 02:54 PM I mean dollar is like $2/ton here and we still recirculate it... 08-May-20 02:54 PM mostly.... 10-May-20 02:51 AM https://www.ebay.de/itm/324154503722 10-May-20 06:00 AM +1 for hydrogen balloons, particularly in cases with no metal components in the balloon itself -- renewable resource and much cheaper/easier to obtain 10-May-20 06:00 AM The mere existence of helium balloons is scandalous 10-May-20 10:00 AM I think people are worried about a fireball burning high school children with molten latex. 10-May-20 10:00 AM How do you defend yourself against that if it happens? Yes I used a highly explosive gas that caused the Hindenburg disaster because it was cheaper? 10-May-20 10:02 AM Cheaper, environmentally sound, national weather service record? What’s the cost difference between hydrogen and helium? 10-May-20 10:02 AM The other problem is we’re using a unique altitude control system. 10-May-20 10:02 AM We have an actuated valve shoved in the bottom of the balloon nozzle. 10-May-20 10:02 AM Some experiments are designed as constant altitude. We vent gas to maintain altitude. 10-May-20 10:02 AM To land, we open the vent. 10-May-20 10:02 AM But the balloon doesn’t completely deflate. 10-May-20 10:05 AM Ah 10-May-20 10:05 AM So what lands in some farmer’s field is a couple payload boxes, a parachute that isn’t used, then a saggy balloon. 10-May-20 10:06 AM Now I see more of an issue with hydrogen 10-May-20 10:06 AM Dropping a hydrogen balloon on someone’s property would be... antisocial.... 10-May-20 10:06 AM Yeahhh 10-May-20 11:47 AM Hmm. Actuating a valve is a bit risky in the first place. 10-May-20 11:50 AM They are very low pressure valve usually 10-May-20 11:50 AM What size are you launching? When I flew some stuff on a big Nasa balloon they had sand ballast systems 10-May-20 11:50 AM And I think they cut the balloons off 10-May-20 05:29 PM I am not too pleased by the Adler design. It’s a bit too Rube Goldberg for my tastes. 10-May-20 05:29 PM It’s a multipart 3D printed design. One part is a cylinder. The balloon attaches to the cylinder. 10-May-20 05:29 PM The inner part has the electronics, a linear actuator, and is tied to cord that goes to the parachute. 10-May-20 05:29 PM Supposedly, the linear actuator in one position keeps everything closed. In another position, it vents helium. And if it moves further, it allows the outer sleeve and balloon to separate, and the payload to parachute back. 10-May-20 05:29 PM Except, sometimes sometimes the vent doesn’t open, or it does open and sticks open, and it’s never successfully separated the balloon from the payload. 10-May-20 05:29 PM The traditional cutdown system we used involved batteries and nichrome wire that would melt and separate the line between the parachute and the balloon. 10-May-20 05:29 PM We lost some very expensive camera gear.... the idea was to launch west of Chicago, use the altitude system to keep the balloon from rising too high, let it fly across Lake Michigan, and vent it to land it in Michigan where we can recover it. 10-May-20 05:29 PM I think the valve didn’t open, balloon went too high, burst, and the whole thing came down fast, landing a few miles offshore. (The recovery team could track it and follow the strobe. Night flight to measure light pollution over the city.) 10-May-20 06:20 PM The big design challenge is that we can’t easily incorporate both a vent valve and a cut down. The valve has to stay attached to the balloon, and the if that gets cut free, we lose the valve. 10-May-20 06:20 PM I’ve suggested using an actuated ball valve, and potentially something on the sleeve like a mini MIG welder to feed wire upward, which would pop the balloon. 12-May-20 05:05 AM https://www.ebay.de/itm/233575653731 12-May-20 05:21 AM big chamber with what looks like a waver loading system? 12-May-20 02:42 PM https://www.ebay.com/i/333435466031 12-May-20 02:43 PM ayyy that's "my" drag pump! 12-May-20 02:43 PM not the worlds worst price for it either 12-May-20 02:43 PM too bad it's missing its driver 12-May-20 02:43 PM but that should not be too hard, single phase bldc with hall feedback 13-May-20 02:26 AM https://www.ebay.de/itm//333559862725 13-May-20 02:26 AM https://www.ebay.com/i/333435466031 Wasn't @szeloof looking for one like this? 13-May-20 04:05 AM https://www.ebay.de/itm/254539598510 Wow this is a good price 13-May-20 04:14 AM why are iso o-rings often more expensive on ebay than new? 13-May-20 10:24 AM Are there any other known models of compact turbo-drag pump like that that would survive a vent to atmosphere or other sudden/abrupt increase in gas load? 13-May-20 10:24 AM Thinking mostly of tube implosion, but also of failures of cryogenic couplings inside a chamber. 13-May-20 10:25 AM my alcaltel 5010 does that just fine 13-May-20 10:25 AM Yes, the model that you just posted. Was wondering about any other known such pumps. 13-May-20 10:25 AM I tried to search for such things last night for some time, but was unable to find quite the right combination of search terms to locate any others like this. 13-May-20 10:26 AM the 5011 does the same only bigger 13-May-20 10:26 AM Intriguing 13-May-20 10:26 AM Ah, yes, I can see that the blades for the 5011 are also quite stubby 13-May-20 10:49 AM Hmm what voltage would be needed to drive that motor? Did you build the controller for yours? The manual suggests the original was some giant rack mount unit, but does not directly state the drive voltage. 13-May-20 10:54 AM nah I got mine with the pump 13-May-20 10:54 AM not that much, never measured it but it's got a 63V smoothing cap 13-May-20 10:54 AM so ~50V? 13-May-20 02:59 PM @niflheim I got a drag in a pump station called drytel 30... But I think its a 5010 inside (also has a membrane rough pump) 13-May-20 03:00 PM I hate doing drag at pump stations. I prefer clubs or another such lively venue. Better bathrooms, too. 13-May-20 03:01 PM ;) 14-May-20 01:37 AM https://www.govdeals.com/index.cfm?fa=Main.Item&itemid=7334&acctid=4788 14-May-20 01:37 AM Starting bid, $250 14-May-20 01:37 AM No computer tho 14-May-20 01:37 AM Or power cabinet 14-May-20 05:38 AM Lolol 15-May-20 03:46 PM Pretty good starting point for a project, imo 15-May-20 03:53 PM Quite the complex project 15-May-20 03:53 PM Definitely not a first time EM project 15-May-20 03:53 PM Unless you really really want a challenge 15-May-20 04:04 PM https://www.ebay.de/itm/303289787011 Keep in mind, that's 4 pcs! 15-May-20 06:16 PM but if you have any sort of cnc router you can just use acrylic in most applications for much cheaper 15-May-20 07:11 PM for the flange? 16-May-20 02:03 AM https://www.ebay.de/itm/274342698707 16-May-20 02:03 AM Sure you can do acrylic windows, but that's not exactly suited for high vacuum stuff 16-May-20 02:24 AM https://www.ebay.de/itm/303125916665 Some very interesting thingies on there 16-May-20 03:04 AM I use an acrylic ISO 250-F window machined by an undergrad novice at 1E-7 torr. If you're above 1E-5 Torr I wouldn't hesitate to use acrylic, if you're pumping with a turbo and below 1E-6 I would check calculations but still probably not really worry until closer to 1E-7 16-May-20 08:42 AM interesting, how thick? i assume laser cut vs machined doesn't matter? 16-May-20 09:16 AM I think the thickness necessary probably depends upon the unsupported area? biggest thing with acrylic is absolutely do not clean it with any kind of alcohol 16-May-20 11:13 AM I think 1” for 8”-14” and 0.5” for 2.75”-6” is the norm I’ve seen 16-May-20 11:13 AM The calculation is pretty easy though. Yes, don’t bother trying to clean acrylic with anything other than water.... We machined the cantering next ring groove but we have some older flanges that don’t have that and just centre with iso clamps 16-May-20 12:40 PM https://www.montanainstruments.com/help/Window-Thickness-Calculator/ 16-May-20 03:11 PM I used 1/4" pvc (not clear) for the bottom of my 10" chamber and it held up... I did however bond a second 1/4" to it when I thought I might want to cut a feedthrough in the center 20-May-20 04:28 AM https://www.ebay.de/itm/333581392300 Man they keep getting cheaper 21-May-20 09:05 AM In case anyone is interested, I know someone in Phoenix selling two Newport Research Series optical tables. "Big 5'x12'x18" with imperial threaded holes, legs, and regulators. One has a 2" diameter wire access hole in the center. Known history and in excellent condition, both were used for holography since new. Asking $7K each, or $10K for both. I you buy both you get a heavy duty copy of the newport table yoke for clamping them together." 22-May-20 08:08 AM @GigaSquirrel these are relatively short lifespan corona tubes, yes? They’re not designed for proportional? 22-May-20 08:09 AM yes and no 22-May-20 08:09 AM they don't live long in corona mode (iirc 5k Hr spec?), but you can use them just as well in prop mode 26-May-20 04:22 AM https://www.ebay.de/itm/254602158518 26-May-20 04:25 AM 10-15% W fill for reference 26-May-20 04:28 AM what reference? 26-May-20 04:28 AM it says 10-15% in the description 26-May-20 04:32 AM Yes, I was posting that from the description to save a click. For reference to other people. 26-May-20 07:32 AM 3d print yourself some xray masks and zone plates 26-May-20 07:32 AM saw a paper a while back that went about it using a resin printer and filling voids with tungsten powder 26-May-20 12:59 PM So tempting..... 26-May-20 12:59 PM https://chicago.craigslist.org/chc/hsh/d/chicago-vintage-green-vaseline-glass/7126598803.html 26-May-20 01:00 PM get a bit more U in there and sell them as self sterilizing 27-May-20 06:32 PM https://edispositions.nextlot.com/public/sales/88330/lots/18736176 27-May-20 06:32 PM https://edispositions.nextlot.com/public/sales/88330/lots/18736171 27-May-20 06:32 PM There's currently 24 Varian HS602 pumps up for sale. Hopefully eBay will get flooded with them soon 27-May-20 06:32 PM https://edispositions.nextlot.com/public/sales/88330/lots/18736167 27-May-20 06:32 PM Biggest UHV angle valve I've seen so far 27-May-20 08:22 PM the Varian HS602 is single-phase EU voltage looks like, $50-100 each is about the right price for them 27-May-20 08:22 PM also I happen to have a larger pneumatic valve! 27-May-20 08:22 PM we have a CF 10" pneumatic piece that goes on a 10" tee to make a 10" angle valve, or in our case in a 10" tube with a pair of 2.75" flanges on the opposite side to make a U shaped 2.75" valve for who knows what reason 27-May-20 08:56 PM Is it EU voltage? I thought I saw something where it has its own built in inverter and will take whatever you throw at it. 27-May-20 08:56 PM I also saw something saying 220-240V so I don’t know what’s right. 28-May-20 01:12 AM "220-240V" is something I've seen a lot on consumer electronics. I always thought it had something to do with curve shapes. Like: accepts 240 v sine or 220 v trapezoidal… 28-May-20 01:12 AM That's just a guess though 28-May-20 07:49 AM Pretty sure in this case it's just that the motor needs around that much to get the right current to spin? 28-May-20 09:05 AM Do I go into the dual conversation of mains voltage ranges and frequencies and AC motor theory? Hmmmmmm.... Hahahaha. Nah... you kids are smart enough to go use google. 28-May-20 09:39 AM EU voltage to me means 50Hz not 60 28-May-20 10:07 AM @Charles same 28-May-20 10:17 AM @nmz787 a ton of motors can run at both. 28-May-20 10:17 AM they give different pumping speeds at each 28-May-20 11:18 AM If anyone fancies a decommissioned Sizewell A reactor remote manipulator control station, look no further: https://www.bidspotter.co.uk/en-gb/auction-catalogues/ramco/catalogue-id-ramco-10217/lot-e75c79e1-f514-4ce7-a8a8-abb40099d2dc 28-May-20 12:05 PM Those just appear to be security camera controls. 28-May-20 12:05 PM If they were actual reactor controls, well, I’d be redecorating my living room around them. 28-May-20 02:05 PM https://murphyauction.hibid.com/catalog/215352/planetary-resources-aerospace-r-and-d-online-only/ 28-May-20 02:05 PM cheap workshop things from an aerospace company closing 28-May-20 02:05 PM in VA 28-May-20 03:33 PM Oh I remembered that company, made quite a bit of noise when there was a bunch of hype for asteroid mining for some reason 28-May-20 03:33 PM They came to our campus to do a recruitment event for hardware development engineers 28-May-20 03:33 PM I guess that's not going to happen anymore 28-May-20 03:33 PM https://www.geekwire.com/2020/buying-planetary-resources-consensys-gives-away-science-asteroids-will-sell-rest/ 28-May-20 03:48 PM yeah basically folded and got bought by a BTC company... 28-May-20 03:48 PM there was a never a great business case but they had some great folks that went to do a lot of good stuff in other companies 28-May-20 04:47 PM There’s got to be a story here: 28-May-20 04:47 PM https://murphyauction.hibid.com/lot/70853-215352-634871/lot---9--wolfman-coffee-mugs/ 28-May-20 05:55 PM https://www.ebay.com/itm/Alcatel-MDP-5011-Tubo-Pump-s-n-no-J4192-45/254611001628 28-May-20 05:55 PM Drag pump! Only alarming thing is the cryptic description: "It Noise at work" 28-May-20 05:55 PM Might be a good project for a rebuild? 28-May-20 05:55 PM It uses two ceramic bearings, and I can only imagine the tolerance between rotor and stator is tight 28-May-20 05:55 PM @GigaSquirrel Any idea if it would be easy to DIY a controller for it? 28-May-20 05:55 PM From this picture on your website, it doesn't seem all that complicated? 28-May-20 05:55 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/photo_2019-10-22_13-08-51-B12A4.png 28-May-20 06:05 PM It is too bad the shipping cost is so high...would consider risking $100 on it but not $150 and i doubt the seller would even go that low. 28-May-20 06:05 PM Tempting though 28-May-20 06:06 PM Rebuild shouldn't be too hard, assuming the pump can still spin 28-May-20 06:06 PM I'm not too worried about the mechanical part, it's the electrical part that concerns me 28-May-20 06:06 PM This newer pump uses a newer controller than the MDP 5010 28-May-20 06:06 PM My budget for possible fancy paperweights is pretty low right now. Burnt out motor windings would be my biggest concern with one of those 28-May-20 06:07 PM Uhh, the controller should be able to stop it when it senses overload, almost all modern turbo controllers does that 28-May-20 06:07 PM Since it's rated to withstand atmosphere in-rush safely and simply spin at a lower speed when at a higher pressure, I think the motor should be fine 28-May-20 06:11 PM Does look like the seller mostly has surplus stuff and not the remains of someone's projects. Probably a fairly easy fix by swapping in new bearings assuming nobody did anything stupid with it. 28-May-20 06:13 PM Here's a picture of the ACT 100 controller card posted on here before by @Black Lemming 28-May-20 06:13 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-AF6A2.png 28-May-20 06:13 PM At least I think it's the ACT 100? 28-May-20 06:13 PM Apparently the older model use a different plug? So I guess there would be a different pin out as well? 28-May-20 06:13 PM I'll gladly sell one of my other turbos (which has depreciated significantly due to the recent flood of eBay turbos) for this drag pump 28-May-20 06:13 PM Oh wait a sec! 28-May-20 06:13 PM https://www.ebay.com/itm/Alcatel-P0090E1-M-Power-Board-for-180-T-Leak-Check-Machine/392792486738 28-May-20 06:13 PM But I'm still not sure if this board will work with the MDP 5011 28-May-20 06:13 PM There's certainly a lot of 5011 or 5010 owners in this server, so some clarification of compatibility would be nice to have 28-May-20 06:13 PM This ACT 100 controller card looks different and specifically says MDP 5011 compatible 28-May-20 06:13 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-32CC4.png 28-May-20 06:13 PM Oh actually it's not complicated at all! 28-May-20 06:13 PM http://www.wimmeralogic.com/adixen-alcatel/MDP-5011.html 28-May-20 06:13 PM Just need a bit more googling 29-May-20 01:05 AM It's just a single phase bldc and one hall, should be easy as to get running 29-May-20 05:49 AM During the teardown of your pump, did you replace your bearings? 29-May-20 05:51 AM Nope 29-May-20 05:51 AM they still feel good 29-May-20 05:56 AM At least it looks like the bearings are of standard dimensions, unlike in some of the Edwards pumps. I wonder what's the biggest difference between the 5011 and 5010? 29-May-20 05:56 AM It looks like electrically, they should be compatible with each other? 29-May-20 07:08 AM size, afaik 29-May-20 07:10 AM That was my impression as well from researching it a bit earlier. I think the control scheme is substantially similar. 29-May-20 08:00 AM I think these are also drag pumps: https://www.ebay.com/itm/Adixen-Alcatel-ASM-Helium-leak-detector-ceramic-pump-5006-1H/372939149738 29-May-20 08:00 AM There are three of them on eBay for $400 29-May-20 08:00 AM The only difference is the inlet size, afaik 29-May-20 08:00 AM That shouldn't impact pumping speed as much as a regular turbo down near its ultimate pressure 29-May-20 08:17 AM ultimate pressure is like e-5 or 6 29-May-20 08:17 AM but it has really low pumping speeds 29-May-20 08:17 AM like an order of magnitude less than same sized turbos 29-May-20 08:20 AM The downside for the 5006 is that you can't get access to the rotor from the top like you can with the 5011 or 5010, so I'm not sure how to disassemble it... 29-May-20 08:20 AM When you did your teardown, did you just have to loosen that screw on top, take off the bottom cover plate to lift the rotor out? 29-May-20 08:20 AM I guess you'll have to lift out the inner part of the stator together with the rotor and motor in one piece after taking off the bottom cover? 29-May-20 08:20 AM Is that possible in your pump? @GigaSquirrel 29-May-20 08:35 AM yeah pump rotor and motor rotor come put as one part 29-May-20 08:35 AM haven't figured out how to take them apart, think it's a pressfit 29-May-20 08:37 AM From the cross section, it looks like there's just one M5 screw holding the rotor onto the shaft 29-May-20 08:37 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-8E8D1.png 29-May-20 08:37 AM So after you take that screw out, the rotor still won't separate from the shaft? If that press fit is super tight it might make it difficult to replace the top bearing 29-May-20 08:38 AM yep 29-May-20 08:38 AM the m5 sits on a nut that sits on the rotor, but not the shaft, pulling the shaft through the rotor when you tighten it 29-May-20 08:38 AM that's how they "press fit" it 29-May-20 08:39 AM Oh I see 29-May-20 08:39 AM a bit like the turbovac 150/151, if you kow them 29-May-20 08:40 AM I guess they were kind enough to provide a pattern of threaded holes on top of the rotor so you can make a pulling tool 29-May-20 08:40 AM aye 29-May-20 08:44 AM how much is a turbovac 150 worth? have one with a label that says "working" but no controller 29-May-20 08:46 AM ~$300 I guess? There's a dual inlet one on eBay for that price 29-May-20 08:46 AM https://www.ebay.com/itm/C123263-Leybold-TurboVac-TW-220-150-Dual-Inlet-Hybrid-Turbomolecular-Vacuum-Pump/293553651052 29-May-20 08:46 AM And for people with a lathe, there's also a "cartridge pump" for $90 29-May-20 08:46 AM Which will also need some unconventional balancing... 29-May-20 08:50 AM I wish I could just sell junk in the lab and buy QoL improvements 29-May-20 08:52 AM @GigaSquirrel It looks like that nut on top of the rotor wasn't machined from the same piece of stock as the rotor, how is it attached to the rotor? And is the top of the screw vented? 29-May-20 08:53 AM the rotor has an internal thread to accept the screw, the screw presses down on the nut and the nud presses down on the rotor 29-May-20 08:53 AM and yes, the screw has a hole along its length 29-May-20 08:53 AM Then how does the nut retain concentricity with the rotor and the screw? 29-May-20 08:54 AM it doesn't 29-May-20 08:54 AM it's a pain in the ... to balance 29-May-20 08:54 AM Oh 29-May-20 08:54 AM That's an unexpected design feature 29-May-20 08:54 AM yep 29-May-20 08:54 AM I thought about leaving it out, as it doesn't seem to be needed once it's all been screwed together 29-May-20 08:57 AM My guess is that the nut is there for attaching the rotor to the balancing machine after being screwed onto the shaft 29-May-20 08:57 AM Which essentially mandates you to rebalance every time you take it apart... Not sure if that's the best approach, but then again they didn't expect people to just take the pump apart on their own 29-May-20 09:00 AM no idea what they thought tbh 29-May-20 09:20 AM There are many tiers of turbo owners 29-May-20 09:20 AM afaik even TRIUMF sends turbos to the manufacturer for maintenance 29-May-20 09:21 AM Oh I'd love to visit TRIUMF one day, but for a lab with that big a budget it's a no brainer 29-May-20 09:22 AM no they have a whole vacuum pump repair division 29-May-20 09:22 AM they just don't do turbos afaik 29-May-20 09:22 AM Well turbo repair and regular rotary vane repair is completely different 29-May-20 09:23 AM when you have a big budget it's a no brainer to send stuff in, until you have enough of the equipment that it's worth paying someone to do it in-house 29-May-20 09:25 AM Oh look, I found another drag pump of the same family: 29-May-20 09:25 AM https://www.ebay.com/itm/ALCATEL-AMP-007i-Molecular-pump-for-Adixen-ASM142-sn-6643-Untested-d-m/183357938033 29-May-20 09:25 AM Ouch shipping cost 29-May-20 10:53 AM oh cool thats is one out of a leak detector 29-May-20 10:54 AM All of them are out of the ASM series leak testers, including the driver circuit boards 29-May-20 11:00 AM yes i have one of theses ASM detectors, interesting 29-May-20 11:01 AM my 5010 is from a leak tester as well ^^ 29-May-20 11:02 AM I had a close call working on the SEM chamber when the door slid sideways (I dismounted it from the guide rails to get access to it's bottom) and the o-ring seal allowed some air in 29-May-20 11:02 AM Luckily i didn't have my turbo spinning at the time, but it might have been enough to destroy it 29-May-20 11:03 AM oh man 29-May-20 11:04 AM oh thats not so good 29-May-20 11:04 AM I've only ever accidentally vented my turbo to a few mbar, it took that like a champ, 'tho there was some audible deceleration 29-May-20 11:05 AM i never witnessed a turbo failure, only saw the aftermath, are there any videos of turbos failing spectacularly? never saw one 29-May-20 11:06 AM never seen one either 29-May-20 11:06 AM 'tho I am tempted to make a video like that 29-May-20 11:06 AM I have a few turbos in questionable condition 29-May-20 11:06 AM you have a view that would be nice 29-May-20 11:06 AM Seems like a dangerous thing to do 29-May-20 11:06 AM that's for sure, but I have a big garden 29-May-20 11:06 AM just dont hold it in your hand ^^ 29-May-20 11:06 AM i think inside would be better, just to save the neighbors windows 29-May-20 11:07 AM no way it will explode 29-May-20 11:07 AM they're made to hold their insides 29-May-20 11:07 AM well 29-May-20 11:07 AM like a basement 29-May-20 11:07 AM inside 29-May-20 11:08 AM I'm more worried about blades flying out from your fragile viewport 29-May-20 11:08 AM yes but not if you flange gets loos thats happes 29-May-20 11:09 AM are viewports really that fragile? 29-May-20 11:09 AM they're like 8 mm boro 29-May-20 11:09 AM guess we'll see 29-May-20 11:09 AM find someone with a high speed camera to come film first 29-May-20 11:10 AM yep that's also one thing 29-May-20 11:10 AM but I know some people that should at least be able to lend me a chronos 29-May-20 11:11 AM i would probably set up an exterior enclosure just to 100% contain any possible shrapnel but that is just me 29-May-20 11:11 AM you need like 50kfps or more for that depending of the speed of the turbo 29-May-20 11:11 AM I've got a turbovac 150 in mind 29-May-20 11:11 AM that's 60 krpm iirc 29-May-20 11:11 AM so 1 krps 29-May-20 11:11 AM thats like 6krad/sec 29-May-20 11:12 AM for stuff like this concrete blocks and a sheet of acrylic are pretty easy to source things on the cheap in my experience if you need to build an enclosure that is easy to take down 29-May-20 11:12 AM yeah the enclosure will not be an issue 29-May-20 11:12 AM dont you have like lead bricks they should be quite good for that 29-May-20 11:12 AM yep 29-May-20 11:12 AM I was thinking plates but yes 29-May-20 11:15 AM we have an 18kfps camera 29-May-20 11:15 AM and some nice thick acrylic viewports... 29-May-20 11:15 AM tempting 29-May-20 11:19 AM any chance you can / want to send that to germany? 31-May-20 01:34 PM If anyone is looking into machine vision stuff, a Point Grey (FLIR) firefly camera just popped up locally for $45 CAD, FFMV-03M2M and comes with a Fuji f/0.95 2-8mm powered zoom lens https://www.fujifilm.com/products/optical_devices/pdf/cctv/varifocal/yv28x28la-sa2_e.pdf 31-May-20 01:34 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/100386117_10158000746812247_85480600137786-0E579.png 31-May-20 01:34 PM Pretty specific gear but a very good price and I could pick it up and ship it if anyone wanted. 01-Jun-20 08:48 AM I shouldn't bid on this, right? https://murphyauction.hibid.com/lot/66497863/cha-industries-auto-tech-ii 01-Jun-20 09:00 AM https://giphy.com/gifs/starwars-star-wars-episode-3-3o84sw9CmwYpAnRRni 04-Jun-20 09:20 AM This might be of interest to folks. https://www.geekwire.com/2020/everything-must-boldly-go-planetary-resources-hardware-auction-heats/ 04-Jun-20 10:27 AM GIMME ASTEROID MINING LASERS 04-Jun-20 10:57 AM See, that's the spirit. 04-Jun-20 06:03 PM A lot of high prices paid for some of it. 05-Jun-20 01:54 PM https://www.ebay.de/itm/184192556611 05-Jun-20 08:23 PM Ooooh I want, not sure it ships from Germany. 05-Jun-20 08:23 PM I've seen slightly smaller ones too. 5-6 would make a nice somewhat more portable spectroscopy setup. (AIM, ADC, 2-wide Amp, 1 or 2 wide HV) 06-Jun-20 02:32 AM if you really want it you can ship it to me and I ship it to your place! 06-Jun-20 02:32 AM also yes, those half or 1/4 bins are soo cute 06-Jun-20 02:32 AM I thought about turning a full bin into 2 half bins 06-Jun-20 02:32 AM they would be really useful in my room 09-Jun-20 01:52 AM https://www.ebay.com/itm/114219535853 09-Jun-20 02:43 PM I went to the preview for that Planetary Resources auction. Stuff got bid up like crazy. Some things basically went for new list price. 09-Jun-20 02:47 PM geez 09-Jun-20 03:08 PM Lots of old retired guys with money to burn. 09-Jun-20 03:10 PM but what do they do with the stuff 09-Jun-20 04:30 PM I sold my SEM on eBay for a second time. Maybe this time it won't be a scammer? 09-Jun-20 05:19 PM @piGuy so are you going to be without a SEM now? 09-Jun-20 05:20 PM We'll see. The last buyer was attempting arbitrage. We agreed on a price, and before he paid, he copied my listing and tripled the price. I think his plan was to lock in a price and try to find a buyer to flip it for profit without having to spend any of his own money. 09-Jun-20 05:41 PM Whatcha want,? 09-Jun-20 07:42 PM I'd probably rather have something that's cheaper, bigger, and more versatile. 10-Jun-20 02:32 AM https://www.ebay.com/itm/Rare-and-Massive-Turbo-Pumps-2200-l-s-Turbo-Molecular-Vacuum-Pump-ISO250-Flange/233181980567 10-Jun-20 02:32 AM 2 for $300 seems pretty reasonable for the person who has time to build a controller 10-Jun-20 02:39 AM wow 10-Jun-20 02:39 AM I guess it doesn't quote shipping 10-Jun-20 02:39 AM This is them, the person got them for free and are apparently in pretty good condition 10-Jun-20 02:39 AM https://fusor.net/board/viewtopic.php?t=13219 10-Jun-20 02:39 AM Old ebay listing text says "Seemingly in great condition. " 10-Jun-20 02:39 AM https://youtu.be/f-C0j5Ax1qk 10-Jun-20 02:39 AM Controller looks huge 10-Jun-20 08:03 AM oof I can't imagine using one that big that isn't maglev 10-Jun-20 08:03 AM Sent to our neighbouring lab who are in the market for a pair of ISO-250 pumps to remind them how silly their 50k+ purchase will be 10-Jun-20 08:23 AM Yep saw those some time back, but I don't think I could build a controller, even if I could I'd probably have a bug, make wrong x correction....then make a hole in the lab. he responds 10-Jun-20 09:51 AM Haha 10-Jun-20 09:51 AM I'm pretty sure if you got it to spin, not overspinning would be easy at that point 10-Jun-20 10:16 AM Making holes in the lab builds character 10-Jun-20 10:18 AM we have a poster covering one 10-Jun-20 10:20 AM Excellent. You can even use it to get your laser beam to another room! 10-Jun-20 10:20 AM (Funranium please don't read that) 10-Jun-20 10:21 AM we actually have one of those ? 10-Jun-20 10:21 AM During lockdown the entire building is your room! 10-Jun-20 10:22 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-DCE72.png 10-Jun-20 10:22 AM this is how you pass the laser from room to room 10-Jun-20 10:24 AM Seems too high tech when you can just take a sledgehammer to a wall 10-Jun-20 10:26 AM this has the nice benefit that it's a shutter if you walk through it 10-Jun-20 10:32 AM Hmm, true. And you can have an undergrad step into and out of the beam at 80 Hz to use a lock in amplifier! 11-Jun-20 01:36 AM https://www.ebay.de/itm/224039767226 Low background PMTs! 11-Jun-20 01:51 PM @nmz787 that video you posted was making me a little dizzy...i think the combo of the spinning and then noticed the 60fps 15-Jun-20 03:40 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20200615_123513-84D46.jpg 15-Jun-20 03:40 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20200615_123533-1D3C6.jpg 15-Jun-20 03:40 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20200615_123542-09A09.jpg 15-Jun-20 03:40 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20200615_123619-277A0.jpg 15-Jun-20 03:40 AM I'm selling this laser, it's ArKr or Ar-Ion, no idea dunno if it still works, have no means to test filament is still conductive make me an offer you think is fair 16-Jun-20 04:26 AM https://www.ebay.de/itm/274398990029 16-Jun-20 10:20 AM Can somebody please photoshop these into the heads of sharks? 16-Jun-20 08:30 PM Can I perhaps find any drone enthusisats in this server? Very interested in buying remotes and FPV kits if anyone happens to have something laying around they no longer use / have any interest in 16-Jun-20 09:15 PM @Jon I have some gear...Fatshark goggles, DJI Lightbridge, can see what else 16-Jun-20 09:15 PM as well as a couple RC transmitters and receivers 16-Jun-20 09:27 PM let me know if there are particulars you're looking for 16-Jun-20 10:35 PM @samy primairly looking for a transmitter + reciver combo. Just laid my hands on a drone but I'm lackinh just that, reciver and transmitter, and the new one's are pretty expensive if you're a student . So whatever you got really. I'm hooking it up to a pixhawk, do you have something that would be compatible with that? 16-Jun-20 10:36 PM yeah, they're all compatible with pixhawk 16-Jun-20 10:36 PM can you ping me this weekend and i can take pics/give you model info of a bunch of stuff 16-Jun-20 10:37 PM Sure! Thaks alot of the help :D 16-Jun-20 10:38 PM sure, not using most of it so happy to send for cheap (used to do uav hw/sw r&d so have a bit more equipment than i need) 16-Jun-20 10:40 PM I see, I had a feeling I'd find someone in this server 16-Jun-20 10:40 PM i'm sure there are others as well 16-Jun-20 11:09 PM I gave up on drones when the laws started changing a bunch here 17-Jun-20 09:56 AM I've been working on designs for a (quadcopter) drone with all-up weight of 1g, and one with a hover time of 3+ hours.... 17-Jun-20 09:58 AM https://www.ebay.de/itm/274398990029 @GigaSquirrel Added international shipping 17-Jun-20 10:32 AM @piGuy 1g quadcopter? would love to hear some more details on that, sounds like custom radio gear and motors sort of scale 19-Jun-20 03:38 PM @samy assuming you're not busy or otherwise occupied; maybe we could talk a bit about the RC stuff? If you're still interested in selling 19-Jun-20 06:37 PM sure, i can pull out stuff this weekend and share pics 19-Jun-20 06:38 PM Oh mb, forgot you said weekend 19-Jun-20 06:38 PM I'll add you as a friend and you just dm whenever you have some time over :D 21-Jun-20 01:09 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-8DDAD.jpg 21-Jun-20 01:09 PM I got many items and glass from the remains of RCH labs. If anybody is interested or can use some of the stuff I post just let me know. All I ask is that you cover the shipping and a little bit so I can recover some of the costs in getting and transporting this stuff, but otherwise it’s all unfortunately just gonna sit collecting dust! 21-Jun-20 01:09 PM The tube specific stuff was purchased by somebody else. This is just the left overs. 21-Jun-20 01:09 PM I have a ton of 40 mm thin wall AR glass (soft glass) and a few cases of 41mm standard wall pyrex. Also some 65 mm I think pyrex and maybe some 75 mm 21-Jun-20 01:09 PM Also others 21-Jun-20 01:09 PM Also there is another exhaust station available with a small turbo and a trivac pump. That would need some reasonable amount of money though. 21-Jun-20 02:35 PM hm does the DJI lightbridge only work with the DJI controller? or can you pipe it to any HDMI screen 21-Jun-20 03:12 PM I tried building a drone based on Pixhawk a while ago. Tricopter. I was unable to get it stable. 21-Jun-20 03:12 PM I figured it would be a good platform to take into the Zone because the arms fold, so it’s really compact. Never got it to work. 21-Jun-20 03:15 PM Currently building with pixhawk! 21-Jun-20 03:19 PM I need to figure out how laws changed in the US.... I remember registering with the FAA, and then getting a renewal notice? 21-Jun-20 03:20 PM Yeah there's a lot of bueracracy nowdays 21-Jun-20 03:20 PM And paperwork (yuck) 21-Jun-20 03:44 PM I saw that of all people King flying schools have a video on You Tube about drone liscences 21-Jun-20 05:22 PM My understanding is that there's license requirements for commercial operators. I'm not sure what's up re: hobbyists. 21-Jun-20 05:22 PM Of course commercial is broadly interpreted, which can nab people. E.g. a realtor using a drone to make a video of a property is a commercial user. We're not just talking about Amazon drone delivery of packages. 21-Jun-20 05:22 PM Heheheh. I've seen the Kings a lot. They got me through my private pilot's license and instrument rating. 21-Jun-20 10:44 PM @rdpierce did you tune via pixhawk? it doesn't autotune like dji equipment 21-Jun-20 10:44 PM (it might now, didn't last time i worked on it) 22-Jun-20 04:44 AM I’m not sure I was able to get it stable enough to attempt to tune. 22-Jun-20 04:44 AM I hit a few snags. 22-Jun-20 04:44 AM First, the servo direction of the tail rotor was backwards, so it wanted to fly in a circle. 22-Jun-20 04:44 AM Second, there was a bug with the receiver, which made the Pixhawk think it was receiving a 45 degree roll command. 22-Jun-20 04:44 AM Third, at one point something was wrong with the magnetometer calibration. It went into an emergency mode and tried to slowly land itself while drifting and almost flew into a lake. 22-Jun-20 04:44 AM I couldn’t get it to stay vaguely in one spot, so I couldn’t reasonably tune it. 22-Jun-20 04:44 AM I also think I sheared the GPS cable in a crash and I need to replace that. 22-Jun-20 11:19 AM That's a lot of Trivac D2.5E! 22-Jun-20 11:19 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-21B57.png 22-Jun-20 11:19 AM https://edispositions.nextlot.com/public/sales/88624/lots 22-Jun-20 03:45 PM https://www.ebay.de/itm/274398990029 Auction is ending in ~13 Hrs 23-Jun-20 12:54 AM https://www.ebay.de/itm/264710435431 Any idea what they were once? 23-Jun-20 12:54 AM looks a bit like a weird ion getter pump? 23-Jun-20 06:04 AM I agree that looks like an old ion pump based on the feedthroughs 23-Jun-20 06:06 AM I'm just not sure what shape the b field has, I've never seen a non-rectangular pump 23-Jun-20 06:52 AM https://www.ebay.de/itm/274398990029 Auction is ending in ~13 Hrs @GigaSquirrel missed it 23-Jun-20 07:10 AM I'm just not sure what shape the b field has, I've never seen a non-rectangular pump @GigaSquirrel Varian sells round versions. 23-Jun-20 07:10 AM And Leybold makes custom made pumps. 23-Jun-20 08:15 AM @GigaSquirrel missed it @dasdwould have gotten one hell of a deal 23-Jun-20 04:07 PM yes 23-Jun-20 09:05 PM CP-1 history, anyone? 23-Jun-20 09:05 PM https://www.ebay.com/itm/VERY-Rare-Leo-Vartanian-Litho-with-Carbon-from-the-1942-CP-1-Successful-Reaction-/254633600240 23-Jun-20 09:06 PM that thing still hasn't sold? 23-Jun-20 09:06 PM The story: This was listed for $350 a while ago and disappeared. 23-Jun-20 09:06 PM It was listed recently with a starting bid of $125. It still didn’t sell. 23-Jun-20 09:06 PM It’s now at $125 starting bid or make offer. 23-Jun-20 09:07 PM Gosh that's tempting even though I know I shouldn't 23-Jun-20 09:07 PM It needs to go to a loving home. I already have one. 23-Jun-20 09:07 PM The catch: the glass broke, so it’s without glass. 23-Jun-20 09:07 PM This is probably for the better. The original glass was not UV resistant. 23-Jun-20 09:07 PM You can see the fading of the print by looking at it apart from the mat. 23-Jun-20 09:07 PM I’ve been meaning to replace the glass in mine, but it’s on my long term list of things to do. 23-Jun-20 09:14 PM Damn it I'll give it a shot 24-Jun-20 09:19 AM well I'll be darned, sorta lowball offer worked 24-Jun-20 09:49 AM Congrats! 24-Jun-20 09:49 AM I wonder how much a block of graphite from CP-1 would cost nowadays 24-Jun-20 09:49 AM I believe at ANS conferences, they used to give out pieces of CP-1 graphite as an award of some sort 24-Jun-20 09:49 AM Actually, what remains of CP-1 is just buried somewhere in a forest near Chicago 24-Jun-20 09:49 AM https://en.wikipedia.org/wiki/Red_Gate_Woods 24-Jun-20 09:49 AM I wanna go dig! 24-Jun-20 09:49 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-66901.png 24-Jun-20 10:03 AM I've heard there are pieces of graphite that are able to be found on the surface in that area. If I am ever in Chicago again I would definitely want to go look...but I doubt if I will be back there anytime soon. 24-Jun-20 10:04 AM It's close enough that it might be worth a road trip for me 24-Jun-20 10:04 AM ANL in its current location is right next to it, they didn't move very far from their original location 24-Jun-20 10:04 AM @rdpierce Have you been to that site before? 24-Jun-20 12:29 PM @Mason_Yu yes, several times. 24-Jun-20 12:32 PM Well maybe I'll visit when ANL open up their lab tours again. 24-Jun-20 12:52 PM Definitely! 24-Jun-20 12:52 PM I've had a picnic on top of that nuclear waste dump. 24-Jun-20 12:52 PM I've done some hiking in that area but have never seen graphite. 24-Jun-20 12:52 PM I've heard rumors about graphite. 24-Jun-20 12:52 PM But never seen it. 24-Jun-20 12:52 PM I suppose that makes me like Dyatlov. Graphite? What graphite? 24-Jun-20 12:52 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-91D26.jpg 24-Jun-20 01:16 PM If anyone knows where to find the graphite on the ground there, please let me know! I’d love to find some. 24-Jun-20 01:18 PM https://www.ebay.de/b/Graphit-Platten/182940/bn_55164314 24-Jun-20 01:19 PM I have one of the CP-1 lucite blocks, similar to what they give out at ANS. 24-Jun-20 01:19 PM They show up on eBay from time to time. 24-Jun-20 01:21 PM Ah, but I've never seen a whole block of CP-1 graphite ever going up for sale. I expect the most you can find is some fine dust. 24-Jun-20 01:21 PM That forest around ANL is not access controlled right? 24-Jun-20 01:23 PM Whole block? No. But the graphite was sawed into small rectangular blocks that were made into souvenirs. 24-Jun-20 01:23 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-BB9EB.jpg 24-Jun-20 01:24 PM Is that a squirrel? 24-Jun-20 01:25 PM Yes. Taxidermy class. That wasn’t the point. 24-Jun-20 01:25 PM Fair enough 24-Jun-20 01:26 PM Graphite brick. Vartanian print. The brown tube is pencil leads made from CP-2 graphite. 24-Jun-20 01:26 PM Thanks for pointing out the print being relisted by the way 24-Jun-20 01:26 PM Uranium glazed kitteh. 24-Jun-20 01:26 PM Vaseline glass. Bauerware bowl. 24-Jun-20 01:26 PM And a Saturn V LVDC board. Plus squirrel butt. 24-Jun-20 01:29 PM What a collection! 24-Jun-20 01:29 PM I’m glad to see you got the print, @Addison-110m!!! 24-Jun-20 01:30 PM Does the kitty glow in the dark too? 24-Jun-20 01:32 PM Not sure if it glows, but I believe it is UV reactive. It’s referred to as custard glass. 24-Jun-20 01:32 PM Specifically, Fenton ware. 24-Jun-20 01:32 PM I’ve got some other stuff not pictured.... 24-Jun-20 01:32 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-58168.jpg 24-Jun-20 01:32 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image1-C5BE4.jpg 24-Jun-20 01:32 PM A set of cute (very tiny) shot glasses. 24-Jun-20 01:37 PM Oh I had a couple shot glasses like that for a time 24-Jun-20 01:37 PM Ended up making them into candles 24-Jun-20 01:37 PM But that one is so tiny 24-Jun-20 01:39 PM The china tea set is also really small. It is strange.... it’s larger than a play set for children but still very small. Uranium glazed. 24-Jun-20 03:19 PM @Mason_Yu Argonne moved. 24-Jun-20 03:19 PM The original location was in land borrowed on a wartime emergency basis from the forest preserve. 24-Jun-20 03:19 PM CP-1 was moved there, given shielding so it could run at higher power without frying everyone, and it was called CP-2. 24-Jun-20 03:19 PM A third reactor, CP-3 was built there as well. 24-Jun-20 03:21 PM I know, what I'm saying is that they didn't move all that far away 24-Jun-20 03:21 PM The Site A / Plot M land was all returned to the forest preserve. 24-Jun-20 03:23 PM There must be quite a bit of atomic heritage to be found in that forest reserve across the river from Argonne 24-Jun-20 03:23 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-4F695.png 24-Jun-20 03:27 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-6F190.png 24-Jun-20 03:27 PM Argonne is on the other side of the expressway. The historic area is part of the forest preserve. 24-Jun-20 03:27 PM There are some signs, the boulder for Site A, the marker for Plot M, but not much visible. 24-Jun-20 03:37 PM let's move this discussion to #off-topic-thats-sometimes-on-topic unless someone of you is considering to buy argonne 24-Jun-20 10:25 PM I've been watching the robocop series and so.... "I'd buy that for a dollar!" 25-Jun-20 05:40 PM I dunno if I have anything I can really use this for but this seems like a pretty good deal for such a feedthrough 25-Jun-20 05:40 PM https://www.ebay.com/itm/High-Vacuum-Research-Chamber-Clamp-Type-ISO-100-Flange-Electric-Feed-Through/202950497242 25-Jun-20 05:40 PM @GigaSquirrel @qualia this seems like a thing one of you would have use for with your fusor shenanigans 25-Jun-20 05:42 PM i'm a bougie all-conflat weenie, otherwise yeah possibly.. dunno what the voltage rating on that electrical feedthrough is tho 25-Jun-20 05:43 PM Seems like a decent amount heh... But ah ok, I thought you had ISO stuff... I kinda have mostly conflat myself and I am starting to kinda regret it lol 25-Jun-20 05:43 PM For example I want to setup an evaporative coater but kinda want to avoid setting it up in a conflat chamber... seems like it would be really annoying to clean... Really want to just have a bell-jar setup. Glass seems infinitely easier to clean when its just a smooth rounded surface... 25-Jun-20 05:43 PM though I suppose you can also stuff your chamber with aluminum foil. 25-Jun-20 05:47 PM I also regret some conflats 25-Jun-20 07:46 PM We're almost completely KF gang at work. It's really nice. 25-Jun-20 07:46 PM Only the mass spec chamber has conflat 25-Jun-20 07:46 PM Though granted our vacuum requirements aren't extreme/we get to the theoretical limit for KF anyway thanks to the giant pumps 25-Jun-20 09:33 PM The glass is pretty easy to clean when evaporating, although some areas I have never been able to fully clean. I use an abrasive past and a buffing wheel to remove metal coatings from my bell jar 26-Jun-20 01:29 AM hmm, I don't have a use fpr it in mind, but it looks nice to have 26-Jun-20 01:29 AM but it does not ship to germany and I should safe money anyways atm 26-Jun-20 01:29 AM https://www.ebay.com/itm/202952710868 if anyone here needs some BNCs 26-Jun-20 02:07 AM https://www.ebay.de/itm/303422706870 That's actually a pretty decent price 26-Jun-20 12:51 PM Looks like that last one is all conflat? 26-Jun-20 01:03 PM Except these 26-Jun-20 01:03 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-AA9E1.png 26-Jun-20 01:03 PM big iso and maybe som customs 26-Jun-20 04:40 PM https://www.ost-photonics.com/product-category/scintillation-crystal-2/labr3ce-scintillator/ Not sure if repost 28-Jun-20 04:50 PM https://sfbay.craigslist.org/eby/zip/d/albany-vacuum-pump/7150095553.html 28-Jun-20 04:54 PM wow, score for whoever ends up getting that if it works 29-Jun-20 08:29 PM Thyratrons https://publicsurplus.com/sms/all,ca/auction/view?auc=2591232 29-Jun-20 08:29 PM https://m.publicsurplus.com/sms/list/current?slth=&sma=&orgid=60858&sorg=&page=0&sortBy=timeLeft 29-Jun-20 09:09 PM Oh very nice! I was just looking for some more big thyratrons! 30-Jun-20 06:27 AM Always good to have around for... reasons..... hahaha. 30-Jun-20 04:19 PM really interesting high voltage switchgear from that Jefferson Lab auction, looks like it's meant to live under oil.. https://m.publicsurplus.com/sms/auction/view?auc=2591190 02-Jul-20 04:27 AM Would anyone in here be interested in some PA88 opamps? I have 5 of them lying around and am not using them, they are 450V opamps taken from a STM, useful for driving piezo stacks 02-Jul-20 10:50 AM I could absolutely use one or two, but digikey's list price kinda scares me rn 02-Jul-20 12:42 PM @pbx/peterbjornx how do they compare to PA84? 02-Jul-20 12:42 PM Some FIB deflection amplifiers I've got at my part time use those and have blown out at times 02-Jul-20 04:01 PM i'd need to look that up 05-Jul-20 12:27 PM If anyone wants faceplates for raspberry pi zero cases... they bundle three with each case and obviously I only need one, so now with my plethora of pis I have tons extra. Just pay shipping from Vancouver BC. Can’t imagine anyone wants these though 05-Jul-20 12:27 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-96E68.jpg 11-Jul-20 06:48 AM https://www.ebay.com/sch/auntique/m.html?_nkw=&_armrs=1&_ipg=&_from= This seller has a lot of pips detectors 11-Jul-20 03:32 PM https://www.ebay.com/itm/224015240689 I've never seen those crystals on ebay 11-Jul-20 06:39 PM https://www.ebay.com/itm/143133533115 forget 3"x3" NaI(Tl), here's 9.25”x4.25" 11-Jul-20 06:39 PM all of my ebay recs are detectors again, this is probably your fault @GigaSquirrel 11-Jul-20 10:36 PM I’d be terrified buying a scint that big as-is. Too much possibility it’s had moisture get in. 12-Jul-20 12:34 AM all of my ebay recs are detectors again, this is probably your fault @GigaSquirrel @qualia You're welcome 12-Jul-20 08:53 AM Do you think that massive scint is cut in quadrants that are light tight? 12-Jul-20 08:53 AM Or do you need to sum the output of the 4 PMTs? 12-Jul-20 08:54 AM I think it's just one 14-Jul-20 03:08 PM https://www.ebay.de/itm/193096968345 17-Jul-20 12:02 AM https://www.ebay.com/itm/124262000248 Biiiig want! 17-Jul-20 08:21 AM that sure is pretty 17-Jul-20 08:22 AM pretty expensive 17-Jul-20 08:22 AM well, no, cheap for what it is 17-Jul-20 08:22 AM but it sure is something 21-Jul-20 12:47 AM https://www.ebay.com/itm/233655037596 27-Jul-20 02:26 AM https://www.ebay.de/itm/202799767943 27-Jul-20 07:30 PM https://www.govdeals.com/index.cfm?fa=Main.Item&itemid=17657&acctid=1055 27-Jul-20 07:30 PM For those in SC... two sputter coaters... one with the glass... wish it was near me. 27-Jul-20 07:30 PM Among other nice lab equipment 28-Jul-20 02:31 AM the good stuff 28-Jul-20 11:39 AM Ooh, a mel-temp 28-Jul-20 11:47 AM Ordered one of these last night based on Ben Krasnow's recommendation https://www.amazon.com/gp/aw/d/B07SS77N7K 28-Jul-20 12:42 PM Nice! 28-Jul-20 12:42 PM My supply is from a crowdsourced open hardware project. 28-Jul-20 12:42 PM https://www.envox.hr/eez/bench-power-supply/psu-introduction.html 28-Jul-20 12:42 PM They have a newer design that’s even better but I don’t want to buy another. 28-Jul-20 12:42 PM https://www.envox.hr/eez/ 28-Jul-20 04:08 PM Hmm, I don't actually see a price or "buy it" button 31-Jul-20 12:04 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20200731_205927-5853F.jpg 31-Jul-20 12:04 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20200731_205937-3EDC8.jpg 31-Jul-20 12:04 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20200731_210357-DA142.jpg 31-Jul-20 12:04 PM selling a 1250 W plasma etcher (Generator, amplifier and matcher all in one) 31-Jul-20 12:04 PM asking 200 bucks 31-Jul-20 01:11 PM what's the voltage input? 31-Jul-20 01:13 PM 190-230 31-Jul-20 01:13 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/5706050C-2ABFD.pdf 01-Aug-20 10:25 AM Yea I nabbed one the other year. I need to get to trying it out... 02-Aug-20 06:37 AM http://www.mobilinkd.com/2020/07/29/the-kenwood-tk-790/ 02-Aug-20 06:37 AM Repurposing a cheap 45W mobile radio for 2m packet / APRS. 02-Aug-20 06:37 AM They are selling the radio for $65. 02-Aug-20 09:53 AM Those were a dime a dozen at hamfests/swap meets. The programming cables and software used to be hard to get but my guess is somebody out there is making both now. 02-Aug-20 09:56 AM The article includes instructions to 3D print the proprietary cables. 03-Aug-20 05:18 AM https://www.ebay.com/p/734951797 03-Aug-20 11:38 AM https://www.ebay.com/itm/264760420869 cheap nim hvps 03-Aug-20 12:32 PM with a whopping three voltage selections :D 03-Aug-20 12:32 PM cool vintage LBL kit though 03-Aug-20 12:33 PM you want just those 3 voltages, you just don't know yet 03-Aug-20 12:33 PM power supply says you want 3, you get 3 03-Aug-20 02:28 PM https://hgrinc.com/productDetail/Pumps/Used-Edwards-Edwards-B13208380-Diffusion-Pump-9000w/07201270004/ 03-Aug-20 02:30 PM man it really sucks that europeans can't even access the site but on the other hand I'm quite happy, makes it easier to resist the temptation 03-Aug-20 02:33 PM its... on a pallet... and new... 03-Aug-20 02:33 PM hnnngh 03-Aug-20 02:34 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20200727085222834_L-81C7B.jfif 03-Aug-20 02:34 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20200727085222976_L-249B0.jfif 03-Aug-20 02:34 PM photos 03-Aug-20 02:34 PM it comes with 2qts of oil too 03-Aug-20 02:34 PM hmmmgh 03-Aug-20 02:34 PM why are you so cruel to me 03-Aug-20 02:35 PM only 3 grand 03-Aug-20 02:36 PM man 03-Aug-20 02:36 PM plus another 3 grand in shipping, I'm sure 03-Aug-20 03:14 PM heh to europastan yea for sure :P 03-Aug-20 05:47 PM Weird that it's blocked for Europe 03-Aug-20 05:47 PM I guess that great (fire) wall of socialism??? Oh wait, thats China. 03-Aug-20 06:00 PM GDPR related, probably... 03-Aug-20 06:25 PM ^ 03-Aug-20 09:27 PM That seems like it should be opt-out tho 03-Aug-20 09:27 PM Idk, those popups have annoyed me since the beginning of them, I have always just tried clicking them away ASAP any way I could manage 04-Aug-20 04:46 PM there's an extension "I don't care about cookies" for Chrome/Firefox that auto-accepts most of the ridiculous GDPR/CCPA popups 04-Aug-20 04:46 PM crazy laws as they should work in reverse, the browser should decide whether you want cookies or not, not the server 06-Aug-20 05:36 AM not entirely what the law is about: it prohibits collecting user data without consent. the goal of the law is not to make them ask, but to make them not do tracking cookies. it does not require a cookie warning if cookies are functional only. 06-Aug-20 05:36 AM there is even a precedent for not allowing a site to require the user to accept in order to use it, "consent acquired by pressure is not valid consent" is kind of what that judge ruled 06-Aug-20 10:56 AM It does seem kinda odd law, but I'm biased because I've always used a browser that either directly allowed control of such things or enabled it via some extension (i.e. adblock) 07-Aug-20 05:20 PM https://www.ebay.com/itm/6-00-MDC-Conflat-Viewport-with-X-Ray-Radiation-Shield-DN100CF-High-Vacuum-CF/154035129416 07-Aug-20 05:20 PM fancy 07-Aug-20 08:48 PM https://edispositions.nextlot.com/public/sales/89390/lots/18873832 07-Aug-20 09:29 PM @pbx/peterbjornx that's why the law doesn't make sense to me - nefarious websites will still collect data without consent, thus users remain victim to the issue. thus to prevent a user from having their data collected and tracked via cookies, other local storage mechanisms, or fingerprinting, it would make sense to place the responsibility in the browser, thus protecting users who do not consent while not requiring legitimate sites to make their website unattractive + annoying via popups 07-Aug-20 10:35 PM Wait... that’s a linac! 07-Aug-20 10:35 PM They mention a cryopump. Are the magnets superconducting? 07-Aug-20 10:35 PM Or is it for some kind of target sample cryostage? 07-Aug-20 10:35 PM Doesn’t this require some serious RF generation? 07-Aug-20 10:35 PM I don’t see any klystrons listed. 07-Aug-20 10:39 PM Could be just a cryopump for the vacuum side of things in a part of it? Sounds like they have a turbopump and a cryopump 07-Aug-20 10:39 PM "Oxford Cryo-Plex 10" looks like a pretty standard cryopump 12-Aug-20 08:24 PM In another discord Just heard news of a Spectra-Physics 125 He-Ne and a Lexel 75 argon ion laser in the Boston area if anyone is interested. Don't know a price, but likely very cheap if not free for the hauling. 14-Aug-20 11:36 PM https://www.businessinsider.com/north-dakota-missile-silo-auction-sprint-launcher-2020-8?amp 15-Aug-20 02:30 AM Hmm, I wonder if they had the foresight to engineer radon removal systems 15-Aug-20 02:46 AM you'll buy a few tons of asbestos with that bunker 15-Aug-20 02:46 AM https://www.ebay.com/itm/201575266674 The LumaPlate-96 is a solid scintillator coated, shallow 96-well polystyrene microplate that eliminates the need for LSC cocktail when counting isotopic samples. The wells of this LumaPlate-96 have a maximum sample capacity of 100 µL. 15-Aug-20 02:46 AM that's pretty interesting imo 16-Aug-20 12:19 AM I am looking for a photomultiplier tube with a SBA or UBA Photocathode and 1 to 1.5" diameter. If they're from hamamatsu they can be identified by having a -100 or -200 after the name, I don't know about other manufacturers. 20-Aug-20 07:23 AM https://www.ebay.de/itm/313177497159 24-Aug-20 10:23 AM https://www.ebay.com/itm/274470013100 24-Aug-20 11:38 PM https://twitter.com/GigaBecquerel/status/1298147037796601856?s=19 02-Sep-20 10:40 AM I want! https://www.ebay.com/itm/Faxitron-DX-50-DC5-X-Ray-Digital-Biopsy-System/264850401812?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D225085%26meid%3Dd43d041d9c494f35a914666a16651639%26pid%3D100675%26rk%3D3%26rkt%3D15%26mehot%3Dnone%26sd%3D164363819742%26itm%3D264850401812%26pmt%3D1%26noa%3D1%26pg%3D2380057%26brand%3DUnbranded&_trksid=p2380057.c100675.m4236&_trkparms=pageci%3A4bc42997-ed43-11ea-8cef-52fb6c93a2ee%7Cparentrq%3A4fe739991740a4d6b15e1380ffff7cca%7Ciid%3A1 02-Sep-20 05:38 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-D7C09.jpg 02-Sep-20 05:38 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image1-8C8BE.jpg 02-Sep-20 05:38 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image2-85453.jpg 02-Sep-20 05:38 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image3-898D8.jpg 02-Sep-20 05:38 PM Free weird 10” stainless cross and 4/6 adapter flanges. Vancouver BC. Let me know! 02-Sep-20 05:43 PM Wish I lived in Vancouver lol 02-Sep-20 06:53 PM @idmb tempting 02-Sep-20 06:53 PM Iso or cf? 02-Sep-20 06:53 PM You're 5 hours away from me 02-Sep-20 06:57 PM @nmz787 I believe they are ASA, though they may be custom. 02-Sep-20 06:57 PM but comes with the CF/KF adapter on top, KF adapters on sides, and the blank/reducer on the end which has some interior mounting threads. 02-Sep-20 06:57 PM the bottom has a large adapter to a larger flat flange 02-Sep-20 06:57 PM Yes I believe the large flanges are actualy 8" ASA (8" pipe ID) 02-Sep-20 07:17 PM Woah that'd be a perfect chamber for the cryopump I have sitting around doing nothing right now 02-Sep-20 07:18 PM road trip! 02-Sep-20 07:18 PM I'm still saving up for a car, and that's a heck of a road trip 02-Sep-20 07:18 PM Problem is I don't know what do put in the chamber 02-Sep-20 07:18 PM And yeah, will need quite a lot of custom machining to even just blank things off. Don't have that capability at the moment 02-Sep-20 07:19 PM I saved it from metal recycling 02-Sep-20 07:19 PM but alas if I can't find someone who wants it... 02-Sep-20 07:20 PM Good work, put it up on eBay I guess 02-Sep-20 07:20 PM TBH the machining you think it needs is overkill if you're >1E-8 torr 02-Sep-20 07:20 PM Well yeah I guess you can just drill a few holes in a stainless plate and bolt it on with an o-ring 02-Sep-20 07:20 PM Which is essentially what ASA flanges are anyway 02-Sep-20 07:20 PM you could hand-drill acrylic and hit 1E-7 torr with most turbos 02-Sep-20 09:36 PM Hmm, hadn't heard of ASA flanges before 02-Sep-20 09:37 PM I promise you’re semi blind 02-Sep-20 09:37 PM They’re all over the place. Just... not usually for vacuum (anymore) 02-Sep-20 09:39 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/JPEG_20200413_010832-3D27B.jpg 02-Sep-20 09:39 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/JPEG_20200413_010733-58830.jpg 02-Sep-20 09:39 PM Does that look like ASA ? 02-Sep-20 09:40 PM Nope haha 02-Sep-20 09:41 PM I've been planning on just getting a closest fit ISO gasket and then hand tapping some screw holes into a blanking plate for whatever chamber I end up using 02-Sep-20 09:43 PM This is asa 02-Sep-20 09:43 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-9CCBF.jpg 02-Sep-20 09:43 PM They’re gendered. Groove vs no groove 02-Sep-20 09:43 PM Some small ones are bi though 02-Sep-20 09:43 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/image0-8FFB4.jpg 03-Sep-20 06:40 AM https://www.ebay.com/itm/XP3312-sq-Pmt-Tube-Phillip-ADAC-Genesys-EPIC/174326466271? Maybe it’s just me but that feels a lot cheaper than normal 03-Sep-20 09:42 AM y asa 07-Sep-20 01:27 PM https://www.ebay.ca/itm/UHV-vacuum-chamber-10-way-conflat-cross-10-with-1-33-ports-MDC-MKS-HPS-Varian/264804624348?hash=item3da795e7dc:g:n74AAOSwmqFfGJI5 This is pretty nice if you're doing a ridiculous amount of instrumentation 09-Sep-20 10:58 PM https://www.ebay.com/itm/Ebara-A150W-M-Dry-Vacuum-Pump/143726883662 09-Sep-20 10:58 PM Any one want a 15000 l/min dry vacuum pump for $50? 09-Sep-20 10:58 PM This thing might fall through my floor if I put it in my room lol 09-Sep-20 11:51 PM that's a 'what's wrong with it' price if i've ever seen one 09-Sep-20 11:51 PM the fomblin charge alone must cost at least 10x that 10-Sep-20 01:24 AM still cheap 10-Sep-20 01:24 AM but far away 10-Sep-20 01:24 AM as always 10-Sep-20 04:59 AM 15000 l/min and $50? just attach a bunch of bellows to it and you have a nice cheap shop vac 10-Sep-20 07:17 AM That weighs half a ton 10-Sep-20 08:24 AM If you want more big dry vacuum pumps, there's also this auction: https://www.macquariebids.com/auctions#/sales/89678/lots 10-Sep-20 09:06 AM It's goofy that it says dry pump, but uses fomblin 10-Sep-20 09:07 AM https://www.ebay.de/itm/232880391317 Just ordered two, will be interesting to see if they're vacuum tight 10-Sep-20 10:08 AM @GigaSquirrel Isn't alumina very porous? 10-Sep-20 10:08 AM oh, nah not too bad. "leak rates of 10-8 mbarL/s" on commercial feedthroughs with it 10-Sep-20 10:12 AM it can be 10-Sep-20 11:47 PM mhm 11-Sep-20 03:03 AM https://www.ebay.de/itm/254662263182 11-Sep-20 03:03 AM https://www.ebay.de/itm/264804809836 11-Sep-20 05:50 AM https://www.ebay.de/itm/274491095009 11-Sep-20 05:52 AM @GigaSquirrel Regarding alumina tightness - it depends on the sintering temperature. Alumina can be both permeable and tight. If you find it leaking too much, heating it in vacuum oven to ~1400 degC should help... 11-Sep-20 10:34 AM https://www.ebay.de/itm/Neu-Uhv-Z-Axis-Translator-1-Reise-4-5-Conflat-Vakuum-Balg-Motorisierte-mdc/254686961989?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D225078%26meid%3Dfff1a35e785e4e03996c6ea218d4e78f%26pid%3D100005%26rk%3D5%26rkt%3D12%26mehot%3Dpf%26sd%3D254434440005%26itm%3D254686961989%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv5PairwiseWebWithBBEV2bDemotion&_trksid=p2047675.c100005.m1851 nice little motorized manipulator too 13-Sep-20 02:25 PM if anyone is in the bay area, lmk. there's a scrapyard in santa rosa full of vacuum hardware and I'd go there again if someone else is interested in visiting also 13-Sep-20 02:33 PM last i went there, they had a lot of big vacuum valves and a whole pile of misc crap 13-Sep-20 02:33 PM but they guy running the yard is a $2/lb kinda guy, so it might have been melted by now 13-Sep-20 02:33 PM impossible to know unless we visit 13-Sep-20 02:54 PM etc 13-Sep-20 02:54 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/XsiCq-GbZRjLqGKMxKtr7EsGcGfnlqGQEM2aVsZXHD-74E44.png 13-Sep-20 06:27 PM If this is Alco, pick with great care. 13-Sep-20 08:29 PM not alco, but why is that? 13-Sep-20 10:53 PM Alco has a bad habit of accepting things that aren't the cleanest and then getting spanked for that when someone downstream of them gets in trouble. Arsenic issues have cropped up more than a few times. You'd think they'd learn their lesson but it happens a bit too regularly. 13-Sep-20 11:23 PM Surprise arsenic sounds like a whole lot of not fun to dispose of in California 13-Sep-20 11:24 PM why is it so hard to dispose of stuff in ca? 13-Sep-20 11:25 PM Fun is illegal here and causes cancer...you learn to just expect it 13-Sep-20 11:26 PM [shrugs] It happens. Company goes into liquidation. Everything gets sold by a liquidation contractor who has no particular process knowledge of the things they're selling. It happens enough that the laws & regulations get written to try to stop this kind of intentional/negligent dumping. It keeps happening. 13-Sep-20 11:26 PM oh so the hard part is not disposal but all the questions that come with it? 13-Sep-20 11:26 PM CA has been on the hook for a few too many toxic waste sites 13-Sep-20 11:27 PM The costs are very high due to all the laws on the books + how few disposal sites exist 13-Sep-20 11:27 PM hmm I see 13-Sep-20 11:27 PM Last time I had to deal with more than household hazmat it involved a couple pages of paperwork to avoid not paying multiple thousands of dollars 13-Sep-20 11:27 PM They said I was lucky 13-Sep-20 11:29 PM And heaven help you if you create mixed waste. 14-Sep-20 01:27 AM How do they know if you accidentally just throw said hazmat into the household garbage? 14-Sep-20 01:29 AM stuff like this usually gets discovered once workers get sick 14-Sep-20 10:01 AM Or one of the monitoring wells comes up with a hit as your illegally discarded hazmat leaches out into the water. CA has entire towns that are more or less abandoned thanks to old landfills with not-illegal-at-the-time disposal. Hard lessons learned led to the new dedicated hazmat landfills and the fees/permitting to try to keep track of people making them in the first place. 14-Sep-20 10:09 AM But I'm reckoning we're in #off-topic-thats-sometimes-on-topic territory now. Happy to keep chatting about regulations and the history that, unfortunately, leads to them. They don't just happen willy nilly. 17-Sep-20 05:50 AM Anybody here got a red pitaya 125-14 they want to get rid of for a good price? 17-Sep-20 11:35 PM There are 3 large, high resolution x-ray digital radiography panels up for sale in unknown condition right now https://www.ebay.com/itm/SAMSUNG-SDX-4336CP-DIGITAL-FLAT-PANEL-X-RAY-DETECTOR/274437746743 17-Sep-20 11:35 PM The power supply for this thing is proprietary and like all medical products, people are charging ridiculous prices for it:https://www.ebay.com/itm/Samsung-SDX-4336CP-parts-/113712184588 18-Sep-20 12:27 AM But I think there's nothing fancy in that power supply, just +24, +5, -15 VDC, with just an insane number of pins 18-Sep-20 11:21 AM https://www.ebay.com/itm/283424761602 18-Sep-20 03:28 PM cute display 18-Sep-20 07:12 PM But I think there's nothing fancy in that power supply, just +24, +5, -15 VDC, with just an insane number of pins @Mason_Yu Well you still have to figure out how to get the video out of it 18-Sep-20 07:12 PM That might be an fpga project 18-Sep-20 07:13 PM video? 18-Sep-20 07:13 PM don't you just want the RS232 readout? 18-Sep-20 07:18 PM The image is over rs232? 18-Sep-20 07:23 PM Nvm was still thinking RGA 18-Sep-20 09:53 PM So... The ASA chamber... If I were to throw in a large "some part of this supposedly doesn't work" 8" CF SEIKI turbopump + controller... Any takers?... 18-Sep-20 10:34 PM @adammunich It just has an ethernet port and there are a number of software that can read from it 18-Sep-20 10:34 PM Not only from Samsung but also other aftermarket suppliers 18-Sep-20 10:40 PM That's pretty nice 18-Sep-20 10:41 PM Still a gamble though, haven't looked into if there are any communication standards for these kind of things yet. Given software and adaptors from more than 1 company works with it, it shouldn't be that proprietary 18-Sep-20 10:41 PM I thought about getting one of these but what I want to do instead is use one of the dental x-ray sensors on an XY table, then I can get like 50 times more pixels. With a 50 micrometer focus spot you'll be able to see defects in solder joints themselves. 18-Sep-20 10:41 PM Those dental sensors (working ones) are still pretty pricey 18-Sep-20 10:41 PM John McMaster ended up writing a Linux driver for gxs700 18-Sep-20 10:41 PM They're not always pricey you can get them on eBay occasionally for like $1,500 18-Sep-20 10:42 PM From what I learnt the <$100 gxs700 are all dead 18-Sep-20 10:42 PM Sub 100 are yeah 18-Sep-20 10:42 PM A while ago I think I paid $2,000 for a lot of seven and I found about 1/3 of them worked 18-Sep-20 10:42 PM I don't have $1500 to spend, that's kind of the problem. This plus the head for ~$800 adds up quick 18-Sep-20 10:42 PM Sticking to film seems like the best idea for high-res radiography, given how much time is needed if you want to move the dental sensor around 18-Sep-20 10:46 PM Film does work very well 18-Sep-20 10:48 PM Or use a camera, a mirror and a scintillation screen! 18-Sep-20 10:48 PM In a good dark box with plenty of exposure time, it works surprisingly well for DT 19-Sep-20 04:45 AM https://www.ebay.com/itm/283424761602 @GigaSquirrel http://www.nuclearphysicslab.com/npl/npl-home/spectroscopy/software_and_hardware/resurrecting-an-antique-mca/ 19-Sep-20 01:29 PM Or use a camera, a mirror and a scintillation screen! @Mason_Yu This does work very well, I did a CT scan with 60 exposures of a pack of hot dogs using a sony A7s, using only 5mR 20-Sep-20 04:34 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-24BE0.png 20-Sep-20 04:34 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-48C34.png 20-Sep-20 04:34 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-4F7FE.png 20-Sep-20 04:34 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-BD077.png 20-Sep-20 04:34 AM I am selling my big boy power supply 20-Sep-20 04:34 AM works on 230V 20-Sep-20 04:34 AM is very heavy, so local pickup in munich, germany is prefered 20-Sep-20 06:35 AM how mucho 20-Sep-20 06:35 AM (what's the ball park for such stuff) 20-Sep-20 06:37 AM ~300 20-Sep-20 06:37 AM 'tho that's way lower than ball park 20-Sep-20 08:25 AM Is there no jumper inside to switch input voltage? 20-Sep-20 08:29 AM not that I know of 20-Sep-20 09:31 AM hmm shipment would be nasty, right? 20-Sep-20 09:31 AM 20 kg 20-Sep-20 09:31 AM someone already said they want it 20-Sep-20 09:31 AM but if they end up not buying it I'll let you know 20-Sep-20 09:33 AM ah ok tnx 20-Sep-20 02:54 PM I'd almost like to take that thing, but 100mA really don't excuse for any error. It just reminds me too much to a nasty shock from 100nF charged to 25kV 20-Sep-20 10:38 PM https://twitter.com/sirus/status/1307914465849950209 20-Sep-20 11:31 PM hmm.. i am in seattle for a while... is that basically a whole 42U rack of gear? 21-Sep-20 02:18 AM @sirus how does it convert from 13.56MHz to microwave? 21-Sep-20 07:11 AM @nmz787 it most likely does not. It’s just an ion generator so that’s just the switching frequency to generate the high voltage to get the gas ionized. That’s my best guess anyways. I see little value in this thing. 21-Sep-20 09:48 AM It says microwave in the description 21-Sep-20 09:48 AM @Charles I'm trying to build something similar at the moment 22-Sep-20 08:19 AM Very cool. If it weren't on the other side of the country... maybe even if it is? If it does plasma ashing anyway... that would be super useful for resist removal on wafer processing. 22-Sep-20 08:19 AM Hope it finds a good home wherever <3 22-Sep-20 02:54 PM Huh just BTW if anyone wants to make a cold gas jet, these work great and are relatively cheap: https://www.idealvac.com/Parker-Series-9-Pulse-Valve/pp/P109004 22-Sep-20 02:54 PM Supersonic gas expansion stuff 23-Sep-20 01:37 AM @idmb I believe I was just reviewing those in a vacuum coating magazine article on Atomic Layer Deposition 23-Sep-20 06:35 PM FedEx never delivered my flange, they just threw it on the street and left, at the wrong house entirely. I think some scrapper picked it up or something... anybody got a 13.25" bored flange laying around? 23-Sep-20 07:26 PM one of these 23-Sep-20 07:26 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/s-l1600-CB011.png 24-Sep-20 01:12 AM nice 26-Sep-20 09:09 AM I’m assuming a reasonably high cross section of this group is into gaming.... 26-Sep-20 09:09 AM And that most of us like the unusual.... 26-Sep-20 09:09 AM A friend has an Etsy shop selling very unusual custom made dice. 26-Sep-20 09:09 AM https://www.etsy.com/shop/TheDiceBuffet 27-Sep-20 02:35 PM Does anyone know where I can get old motherboards for cheap, preferably a higher number of pcie slots 27-Sep-20 02:44 PM Local computer/computer enthusiast forums with a "for sale" section 27-Sep-20 02:44 PM Alternatively motherboards used by cryptocoin miners? 28-Sep-20 01:41 PM @Haru recycling centers 28-Sep-20 01:45 PM thanks 28-Sep-20 01:46 PM https://addnorth.com/en/product/Addbor%20N25?sku=ANBO17ANT 28-Sep-20 02:13 PM boron doped filament? 28-Sep-20 02:14 PM I would just mix boron carbide powder with epoxy and cast it into any shape you want 28-Sep-20 02:14 PM A hell of a lot cheaper than the filament and probably more effective as well 28-Sep-20 02:15 PM for the cost of the filament you could probably get a filament extruder and some boron carbide powder to extrude your own on a small batch scale 28-Sep-20 02:15 PM buying that cryopump? still no bids lol 28-Sep-20 02:15 PM https://swapauction.wisc.edu/Listing/Details/7972613/Lot-of-Miniature-Trees could pick these up same time 28-Sep-20 02:17 PM I'm still hesitating because I'm not sure what the problem with the pump is... They wouldn't throw the pump out if it was a compressor related problem would they? 28-Sep-20 02:17 PM they'd presumably include the compressor 28-Sep-20 02:17 PM if they had issues with the compressor 28-Sep-20 02:17 PM Compressor is a pressurized vessel 28-Sep-20 02:17 PM They can't sell those through this surplus auction 28-Sep-20 02:17 PM even if they just vent all the helium? 28-Sep-20 02:18 PM The people who are handling waste disposal may not know how to 28-Sep-20 02:18 PM This was what nearly happened to me when I tried to get my own helium compressor out from a school lab 28-Sep-20 02:18 PM Cut the lines, they know how to do 28-Sep-20 02:18 PM (in the voice of yoda) 28-Sep-20 02:18 PM ah, you think the group sends stuff to the waste disposers assuming they'll sell it properly, then they just scrap the compressor? 28-Sep-20 02:18 PM @nmz787 That would be an extraordinarily bad idea. It maybe that other groups are also running leybold cryopumps and they want to keep the compressor for them 28-Sep-20 02:18 PM I don't know the waste disposal procedure in UW Madison to make a conclusion on what happened 28-Sep-20 02:18 PM It may be that it was run with contaminated helium, and there was an internal mechanical failure inside the regenerator 28-Sep-20 02:18 PM Even 0.01% nitrogen, oil or water vapor could cause the shaft to break for such a big cylinder under so much pressure 28-Sep-20 02:18 PM But I think it's still potentially worth it... I'd also need to arrange a day off to pick this thing up 28-Sep-20 02:27 PM I just noticed the "Cool Pair" sticker 28-Sep-20 02:27 PM for what it's worth, they normally offer an exchange service 28-Sep-20 02:28 PM https://www.youtube.com/watch?v=6IxFH7nnbUc&ab_channel=Leybold 28-Sep-20 02:28 PM my quote for an RDK 408D2 from them was 12k (bare coldhead), or 4.5k if I sent in a broken one of the same model . 28-Sep-20 02:28 PM Found a nice video with what appears to be accurate cross-section from CAD 28-Sep-20 02:30 PM nice 28-Sep-20 02:30 PM https://swapauction.wisc.edu/Listing/Details/8006390/Lot-of-2-PhotonCounting-Modules 28-Sep-20 02:30 PM I want these too 28-Sep-20 02:30 PM Love the funky music in Leybold videos 28-Sep-20 02:32 PM wish they spent time responding to emails 28-Sep-20 02:32 PM instead 28-Sep-20 02:33 PM https://swapauction.wisc.edu/Listing/Details/7999315/HVAC-Fitting 28-Sep-20 02:33 PM What is this I wonder? 28-Sep-20 02:33 PM Don't tell me HVAC fitting 28-Sep-20 02:34 PM ion pump 28-Sep-20 02:34 PM or rather, the water cooling shroud for one 28-Sep-20 02:34 PM it's either that, or whatever it is someone shoved one into one of our ion pumps for storage. 28-Sep-20 02:34 PM *titanium sublimation pump 28-Sep-20 02:37 PM Ah yes, that made more sense 28-Sep-20 02:37 PM yeah lol 28-Sep-20 03:17 PM I'm beginning to think that cryopump is not too big of a chamber after all 28-Sep-20 03:17 PM It would finally be the chamber of the right size for my big turbo 28-Sep-20 04:07 PM it looks like a nuisance to me 28-Sep-20 04:07 PM since it doesn't have any side ports 29-Sep-20 05:31 AM https://www.ebay.com/itm/143039466015 29-Sep-20 12:50 PM https://www.sciplus.com/24vac-electropneumatic-valve-58162-p 29-Sep-20 12:50 PM Only 50 psi but otherwise a good price if you feel like rigging 24VAC 30-Sep-20 10:13 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screenshot_20200930-191211-B5ED5.jpg 30-Sep-20 10:21 AM nooo 30-Sep-20 10:21 AM I guess that's that for his channel 30-Sep-20 10:26 AM Yeah although at the end he says that this is just money and he may rebuild his setup when space becomes available 30-Sep-20 10:55 AM https://youtu.be/zxZ7TFdXZRA some nice stuff 30-Sep-20 01:18 PM what's your favorite place to get viton gaskets? 30-Sep-20 01:19 PM mcmaster because they show up tomorrow -_- 30-Sep-20 01:35 PM Yeah although at the end he says that this is just money and he may rebuild his setup when space becomes available @Epilogis I asked him if he needs space in california for wacky projects maybe he wont have to divest 30-Sep-20 02:37 PM that's a long haul lol 30-Sep-20 03:21 PM Last time I did that I bought a trailer in the northeast, filled it up and sold it in CA for profit 30-Sep-20 03:21 PM vehicles are much cheaper in the north east 30-Sep-20 03:39 PM Yeah cause they're generally rust buckets 30-Sep-20 07:33 PM @adammunich I get my viton gaskets from LDS Vacuum shopper, but for smaller orders the O-ring store have cheaper prices 30-Sep-20 07:33 PM No difference as far as I can tell 30-Sep-20 07:33 PM For ISO/NW o-rings 30-Sep-20 07:34 PM do you know where I can find a chart of the standard sizes for CF flange o rings? 30-Sep-20 07:36 PM Lesker is generally pretty good with their tables: https://www.lesker.com/newweb/flanges/hardware_cf_gaskets.cfm?pgid=fluorocarbon2 03-Oct-20 09:22 PM @adammunich I really like to buy from the O ring store, though it might depend where you are shipping them to 06-Oct-20 09:26 AM https://www.ebay.ca/itm/Coherent-Ti-Sapphire-crystal-rod-in-water-cooled-stage-from-MIRA-900-laser-2/392942591861?hash=item5b7d341f75:g:1BAAAOSwvndfYL0d Coherent Ti:Sapphire crystal rod in water cooled stage from MIRA 900 laser $450 USD buy it now. 06-Oct-20 09:26 AM Mira 900 can run for ultrafast pulses or CW, so it's a very good crystal if the condition is as stated. 06-Oct-20 09:39 AM Also I believe we have one in storage so if someone wanted any info about it I could check for ya. (Desperately wants to see a hobbyist DIY ultrafast laser) 06-Oct-20 01:50 PM I want to make a hobbyist supercontinuum laser but can't justify the expense 06-Oct-20 02:23 PM hm the coatings on the miras Ti:Sas are crap 06-Oct-20 02:23 PM i once built a Kerr Modelocked Ti:Sa, quite fun but a BBO Type 1 OPO is still better 06-Oct-20 02:23 PM Currently I'm working on an CW OPO 06-Oct-20 02:25 PM did you ever measure the output of your modelocked one? 06-Oct-20 02:25 PM how short of a pulse did you get? 06-Oct-20 02:26 PM yes measured with a Autokorrelator, about 80fs 06-Oct-20 02:27 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/admanpcrthires-1D2E6.png 06-Oct-20 02:27 PM 80 is not bad, what quality of components did you have? 06-Oct-20 02:28 PM what do you mean by that? 06-Oct-20 02:29 PM did you have nice stuff, or junk drawer ebay stuff? 06-Oct-20 02:29 PM 50/50 06-Oct-20 02:29 PM or rather 33/33/33, some nice stuff,some eBay stuff and some self deposited Braggreflectors 06-Oct-20 02:29 PM Well done then! 06-Oct-20 02:29 PM what did you use to stabilize/trigger the self-modelocking? 06-Oct-20 02:31 PM wiggeling a mirror:D 06-Oct-20 02:31 PM sorta, with a piezo i moved/vibrated one mirror 06-Oct-20 02:32 PM ah 06-Oct-20 02:32 PM don't bump the table. 06-Oct-20 02:32 PM What other components have you made? Any luck with gratings? 06-Oct-20 02:32 PM Would love to see spectrogon get some competition.... 06-Oct-20 02:33 PM jupp, im trying to fabricate SESAMs myself 06-Oct-20 02:33 PM One of our gold gratings has a burned spot 06-Oct-20 02:34 PM i had it running cw and tunable via gratings 06-Oct-20 02:34 PM but the Ti:Sa took to much space on the optictable so i dissassembled it after 2 weeks 06-Oct-20 02:34 PM i have a gratingruler for blazed gratings, that's fairly handy 06-Oct-20 02:36 PM ever try amplifying it? 06-Oct-20 02:37 PM nope due to lack of a second crystal 06-Oct-20 02:37 PM I'm curious what amplifying a self-modelocked laser with a flashlamped yag would be like. 06-Oct-20 02:37 PM ahh 06-Oct-20 02:37 PM you mean seeding with 1064 06-Oct-20 02:37 PM nah they use 532 06-Oct-20 02:37 PM so doubled? 06-Oct-20 02:37 PM Yeah 06-Oct-20 02:38 PM but how do you amplify the doubled YAG 06-Oct-20 02:38 PM I guess the original chirped pulse amplifiers were probably flashlamped 06-Oct-20 02:38 PM but now it's all diode-pumped YAG/YLF pumps 06-Oct-20 02:38 PM but the SHG must be after the amplification, YAG does not have gain at 532nm 06-Oct-20 02:39 PM I meant making a Ti:Saph mode-locked oscillator as you did, and then using a 523nm frequency-doubled YAG pulse to pump an amplifier for the 800nm from the Ti:Saph 06-Oct-20 02:39 PM or do you mean the doubled YAG as a pumpsource for another Ti:Sa amplifier stage 06-Oct-20 02:39 PM ahhh 06-Oct-20 02:39 PM sorry:D 06-Oct-20 02:40 PM Yeah sorry! 06-Oct-20 02:41 PM would liked to try that but back then i only had one crystal 06-Oct-20 02:41 PM just cut it in half 06-Oct-20 02:41 PM buy the one on ebay 06-Oct-20 02:43 PM i lost the interest in Ti:Sa:D and i now have a complete Mira 900 06-Oct-20 08:25 PM 80 is not bad... @idmb I love how they talk about marijuana like it's some kind of 1960s thing 06-Oct-20 08:25 PM I wonder if the marketing department is run by a boomer 06-Oct-20 08:51 PM Nah he just created the best thing ever for pulse analysis 06-Oct-20 08:51 PM FROG is god 07-Oct-20 01:03 PM anyone have a raman spectrometer they are throwing away? 07-Oct-20 01:23 PM For a while there were some raman filters on eBay for like $300 07-Oct-20 01:23 PM I was thinking about getting one but I just don't think I would have had time to use it 07-Oct-20 01:23 PM They might still be there though 07-Oct-20 02:04 PM best i could find was this, reasonably-ish priced but not sure i have the energy/time to finish off another DIY project https://www.ebay.com/itm/BW-Tek-473nm-RAMAN-Spectrometer-B-W-Tek-BWTEK-laser-probe-and-More-DIY/143673198642?hash=item2173970832:g:uswAAOSw05Ve-2tC 07-Oct-20 02:04 PM i found a $4k turnkey system aimed at amateurs but a bit outside my price range for an occasional use instrument 07-Oct-20 04:15 PM Wait that's a raman??? 07-Oct-20 04:15 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20201007_161609-1EEEB.jpg 07-Oct-20 04:15 PM I've had this sitting here for years after a friend said it was a good deal for a lot of laser 07-Oct-20 04:15 PM Looks like I paid $76 shipped 07-Oct-20 04:15 PM 2 years ago 07-Oct-20 04:15 PM It was listed as "Blue Light, 473nm Laser-optical assembly" 07-Oct-20 04:23 PM lol 07-Oct-20 04:30 PM Oooh that has a laser and all the pieces, that's a good deal. 08-Oct-20 05:44 AM haha yep, i believe you are the owner of the guts of a raman spectrometer 08-Oct-20 08:54 AM hmm 08-Oct-20 08:54 AM is it easy to RE the compound of litho resists with a raman? 08-Oct-20 08:54 AM is there a nice (open/free) raman spectrums database available on the webs? 08-Oct-20 08:54 AM (never tried raman spectroscopy) 08-Oct-20 08:57 AM my raman spectroscopy is entirely different 08-Oct-20 08:57 AM raman 08-Oct-20 08:57 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Screen_Shot_2020-10-08_at_8.57.49_AM-9076C.png 08-Oct-20 09:02 AM @N00N resist are usually at least 3 components (sensitizer, polymer, solvent) and usually more if commercial resist so you’d have to separate them into individual fractions too 08-Oct-20 09:02 AM and even then if they aren’t common compounds they won’t be in a spectra database 08-Oct-20 09:02 AM Would probably have more luck with LC-MS than anything 08-Oct-20 09:10 AM hmmm ok 08-Oct-20 09:10 AM @idmb your raman goes brrrt 08-Oct-20 09:10 AM ps laser pulse brrrrt 08-Oct-20 09:15 AM Oxygen goes brrrrt 08-Oct-20 09:16 AM ok 08-Oct-20 09:18 AM what’s sCFG? 08-Oct-20 09:20 AM Slow centrifuge 08-Oct-20 09:20 AM As opposed to fast centrifuge 08-Oct-20 09:20 AM Semi arbitrary distinctions but basically “if you’re buying a standard 800nm chirped pulse laser, you either have this (fcfg) and spin as fast as you can or this (scfg) and spin the less spinnable molecules” 08-Oct-20 09:20 AM If you pour more $$$ into it than a standard chirped pulse amplifier system, you can go slower or faster. 08-Oct-20 09:20 AM $$$ and optical path length - you basically double that every time you slow it down by a factor of 2, and we’re already at 4m x 2 14-Oct-20 11:22 AM https://www.ebay.com/itm/293753713600 Well that's a pretty damn cool looking meter 14-Oct-20 01:00 PM Technical Associates made some neat stuff when they weren't going for Eberline or Ludlum knockoffs. 14-Oct-20 11:34 PM https://www.ebay.com/itm/293769190649 14-Oct-20 11:44 PM 16x16 pixels of CZT goodness 14-Oct-20 11:44 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-3B417.png 14-Oct-20 11:46 PM what sorcery are you performing? 14-Oct-20 11:46 PM how do you get boards to float like that? 14-Oct-20 11:47 PM level three wizard 14-Oct-20 11:47 PM pulls out a torch and prepares to set someone on fire 14-Oct-20 11:47 PM But I don't have red hair! 14-Oct-20 11:48 PM splashes red dye on Gigasquirrel 14-Oct-20 11:48 PM now you do! 14-Oct-20 11:49 PM Can't argue with that logic 14-Oct-20 11:49 PM http://www.montypython.net/scripts/HG-witchscene.php 14-Oct-20 11:52 PM Damn, 130 detectors in one machine 14-Oct-20 11:52 PM 130 of those 16x16 arrays 14-Oct-20 11:52 PM These are collimated with tungsten when they are in their rectangular panels right? 14-Oct-20 11:53 PM not sure 14-Oct-20 11:53 PM but it wouls make sense 14-Oct-20 11:53 PM But the pixels are individually collimated I think 14-Oct-20 11:53 PM Yeah I think they can change out a big panel in front of the detectors depending on the therapy, tradeoff of energy and spatial resolution 14-Oct-20 11:54 PM neat 14-Oct-20 11:54 PM if I can't get the thing to talk as it is I'll probably try to use all pixels as one 14-Oct-20 11:54 PM pretty sure the bottom most pcb are preamp asics 14-Oct-20 11:56 PM 6.3% FWHM at 140 keV for this detector apparently 14-Oct-20 11:56 PM yep 14-Oct-20 11:56 PM which is pretty damn neat 14-Oct-20 11:57 PM It's like high resolution just in the right energy range between Si-PIN or SDDs and small scintillators 14-Oct-20 11:58 PM I'm guessing the thing is 5 mm thick, so it'll be good to a few 100 keV 14-Oct-20 11:59 PM The datasheet states 40-250 keV 14-Oct-20 11:59 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/DOC2109131-NMCT-870-CZT-PDS-CC90E.pdf 15-Oct-20 12:00 AM dang, 7.25 mm t h i c c 15-Oct-20 12:00 AM Can you replace the window I wonder 15-Oct-20 12:01 AM I'll tell you once I get mine 15-Oct-20 12:06 AM Hopefully the ASICs are not too difficult to RE 15-Oct-20 12:07 AM I am hoping the thing is fully analog 15-Oct-20 12:07 AM but I don't have much hope 15-Oct-20 12:08 AM I mean, it has 256 pixels and only 40 pins out 15-Oct-20 12:08 AM So I really doubt you are getting all the analog signals without any processing 15-Oct-20 12:08 AM ...fair 15-Oct-20 12:09 AM Are you sure this is from the latest SPECT machine that GE makes? 15-Oct-20 12:09 AM no 15-Oct-20 12:10 AM I agree the exploded view looks pretty much the same, and that detector for sure has 40 pins with 256 pixels 15-Oct-20 12:10 AM Let us know how it goes! 15-Oct-20 12:10 AM we'll see 16-Oct-20 11:40 AM Hi Folks. I have a great deal of vacuum equipment that I’m looking to liquidate, and was wondering if any of you might be interested. Unfortunately due to the weight I cannot offer shipping on this stuff so everything is pick-up only, located in southern Maryland. Items of note include 2x Perkin Elmer TNBX vacuum chambers with built in Ion pumps and titanium sublimators with water cooling shrouds. Looking to get $1000 for each but that’s negotiable if you can pick them up promptly. I also have a varian cryopump with a built in gate valve, and a complete UTI 100C residual gas analyzer with manuals, as well as a bunch of other stuff. DM me if interested, pictures are below. 16-Oct-20 11:40 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/PE_TNBX_CF_Vacuum_Chamber-C97F2.jpg 16-Oct-20 11:40 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/PE_TNBX_CF_Vacuum_Chamber_1-63F8F.jpg 16-Oct-20 11:40 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/UTI_100C_RGA-43C2A.jpg 16-Oct-20 11:40 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/Varian_Cryopump-97A49.jpg 16-Oct-20 11:42 AM In the bunch of other stuff, anything that could serve as a decent backing pump? 16-Oct-20 11:43 AM I have a couple of diffusion pumps but no rotary vane roughing pumps or low vac pumps like that 16-Oct-20 11:44 AM Ok 16-Oct-20 11:44 AM Just thought I’d check given I’ll be in that area in about a month 16-Oct-20 11:57 AM @Conmega ^ 16-Oct-20 01:06 PM any standalone gate valves? 16-Oct-20 01:06 PM or smaller chambers 16-Oct-20 01:06 PM i live pretty nearby 16-Oct-20 01:19 PM i havent got any gate valves (besides 2.75" CF) but i do have some smaller chamber sections 16-Oct-20 01:31 PM isn't that one in the last photo? 16-Oct-20 01:44 PM its welded directly to the cryopump 16-Oct-20 03:40 PM https://www.ebay.com/itm/INDIUM-99-99-pure-sheets-12-X12-X-010-155-grams-4-98-troy-oz-/253449783637 16-Oct-20 03:49 PM does quick check to make sure they aren't stolen university property 17-Oct-20 01:02 AM https://www.ebay.de/itm/143723646470 17-Oct-20 07:11 PM Huh, I've actually got a UTI Quardrapole and match network that looks exactly like what you've got there, though there's no control box. Of course, you've got the complete thing, and splitting that up would be terrible, but I'm too far away anyways, other side of the nation and all. 17-Oct-20 09:22 PM RGA isn't too heavy to ship though, and you could always use extras 17-Oct-20 09:22 PM "parts car" and such 18-Oct-20 02:34 AM https://twitter.com/scientist84/status/1315760730646478848 18-Oct-20 02:26 PM @nmz787 PM'd about the RGA 18-Oct-20 06:26 PM Whoops, wrong person 18-Oct-20 08:30 PM Hahaha. Put some EL wires on it and sell them as props for sci fi shows. I could see Scotty standing next to one of those things. 20-Oct-20 01:49 AM https://www.ebay.de/itm/254730919908 20-Oct-20 01:49 AM Holy hell 20-Oct-20 02:05 AM that would need quite the light sensor 20-Oct-20 02:07 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/1328789377316-ACCF3.png 20-Oct-20 02:07 AM dang that's a lot of light sensor 20-Oct-20 02:07 AM what could you do with such a large csi crystal that alternatives like HPGe detectors wouldn't also do? 20-Oct-20 02:09 AM well first of all afford it 20-Oct-20 02:09 AM plus no further cost in cooling 20-Oct-20 02:14 AM According to my quick googling HPGe typically has better energy resolution and CsI/NaI, better sensitivity. 20-Oct-20 02:15 AM hpge is always better 20-Oct-20 02:15 AM in every regard 20-Oct-20 02:15 AM apart from cost 20-Oct-20 02:15 AM Yeah this might make a good prospectors probe I guess but still looks like HPGe is more useful 20-Oct-20 02:16 AM HPGe is like an 8.5 Digit multimeter 20-Oct-20 02:16 AM when you need it you need it but in 99.9% of the cases a 3.5 digit handheld does the job 20-Oct-20 02:17 AM Fair 20-Oct-20 02:17 AM Is there any good reason to have such a massive crystal apart from, quickly getting a sample processed? 20-Oct-20 02:17 AM Or detecting things in nature, etc. 20-Oct-20 02:18 AM higher effciency at high energies, plus higher sensitivity meaning lower detectable activity 20-Oct-20 02:19 AM The neutron counter I have has something like 24 tubes all stacked together instead of one giant sensing tube. 20-Oct-20 02:20 AM one giant proportional detector would need an incredibly high operating voltage 20-Oct-20 02:20 AM I was thinking, I wonder if the manufacturing cost of a crystal like this outweighs what you could do with larger array of smaller ones. 20-Oct-20 02:21 AM you'd have a lot of dead space inbetween 20-Oct-20 02:21 AM efficiency calculation would be a nightmare 20-Oct-20 02:22 AM I see, yeah good reason 20-Oct-20 02:22 AM i wonder if i have a pmt in the barn that would fit this 20-Oct-20 02:24 AM keep in mind that CsI(Tl) is fairly red 20-Oct-20 02:24 AM i have a box of PMTs I never researched 20-Oct-20 02:24 AM no idea what the photocathodes are 21-Oct-20 01:32 AM I have a 100W, diode pumped Nd:YAG cavity (with rod and diodes). Anyone have a Ti:Sapphire cavity they want to trade? 21-Oct-20 03:51 AM doesn't seem like a good deal:D 23-Oct-20 04:39 PM https://www.ebay.com/itm/Vintage-Cressington-MTM10-High-Resolution-Film-Thickness-Monitor/203096749423 24-Oct-20 01:47 AM https://www.ebay.com/itm/AeroStor-24-000-VDC-High-Energy-Discharge-Capacitor-by-AEROVOX/133516131634 (likely) spent NIF caps, anyone? :D 24-Oct-20 01:47 AM basing that assumption on https://ieeexplore.ieee.org/document/825425, which sez they use 85 kJ 24 kV capacitors, and are likely still working with the Aerovox KM brand 24-Oct-20 04:59 PM Those are not rated for that many discharges, although the energy density and peak current is great 24-Oct-20 04:59 PM https://www.ebay.com/itm/Aerovox-Capacitor-lot-Pulse-Discharge-100uF-22kv-Made-in-USA-qty6/284024267546 24-Oct-20 04:59 PM These are heavier and less energy dense, but they should have longer lifetime and stand up to abuse without exploding. Also good for Marx 24-Oct-20 06:43 PM I remember when MSI in Chicago had a 1 MV Marx generator that would explode a 2x4. I saw online that someone claimed they got rid of it once they realized the caps were filled with PCBs. 25-Oct-20 02:37 AM Greg leyh has a bunch of capacitors like that 25-Oct-20 02:37 AM I don't know if he yet assembled them into anything interesting 25-Oct-20 02:37 AM If you're bored and near Alameda CA he'd probably collaborate on something crazy 25-Oct-20 03:54 AM https://www.ebay.de/itm/373282431301 28-Oct-20 05:08 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20201028_130051-FE0A9.jpg 28-Oct-20 05:08 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20201028_130204-E4E1C.jpg 28-Oct-20 05:08 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20201028_130242-CC10D.jpg 28-Oct-20 05:08 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20201028_130300-FFE24.jpg 28-Oct-20 05:08 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20201028_130309-1DA03.jpg 28-Oct-20 05:08 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/IMG_20201028_130505-A5DF5.jpg 28-Oct-20 05:08 AM 30 kg lead pig, not contaminated, 100€, pick up in Munich, Germany 29-Oct-20 02:35 AM If this was half the price, and the seller would ship... I might just buy this https://www.ebay.com/itm/302974845768 29-Oct-20 02:35 AM I guess this is the universe telling me to just get my custom plasma system finished and running 01-Nov-20 01:42 AM https://www.ebay.com/itm/143726822231? 01-Nov-20 06:39 AM Look at this on eBay https://www.ebay.de/itm/274557060742 04-Nov-20 01:38 PM https://www.ebay.de/itm/363116699242 God damn this is one hell of a good deal! 08-Nov-20 08:10 AM https://www.ebay.de/itm/264914538265 08-Nov-20 08:10 AM https://www.ebay.com/itm/264921147650 12-Nov-20 06:21 AM https://www.ebay.com/itm/164506254320?ul_noapp=true 16-Nov-20 02:25 PM anyone have a 275 to 133 reducer they want to part with 16-Nov-20 03:50 PM @adammunich I’ll see if I can find one 18-Nov-20 05:50 PM Sweet jeebus. Someone in North Carolina need an instant parts collection? https://raleigh.craigslist.org/ele/d/durham-bulk-vintage-radio-vacuum-power/7233283443.html 19-Nov-20 12:01 AM Mostly TV tubes, but you can build some fun stuff, yeah. Probably some HV rectifiers in there. 20-Nov-20 12:23 PM Al lasher's Electronics is closing for good in December 21-Nov-20 01:05 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-EE145.png 21-Nov-20 01:05 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-6FDA4.png 21-Nov-20 01:05 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-A62AC.png 21-Nov-20 01:05 AM https://web.archive.org/web/20100828123218/http://sales.hamamatsu.com/en/products/electron-tube-division/detectors/photomultiplier-tubes/part-r1017.php?&checkprod= 21-Nov-20 01:05 AM red sensitive PMT for sale, make me an offer 21-Nov-20 01:05 AM I have two of them, might be interesting for some experiments where you need two of the same detectors 21-Nov-20 07:36 PM oh no al lasher's D: RIP 29-Nov-20 04:28 AM https://www.ebay.com/itm/Nanosolar-Roll-to-Roll-Vacuum-Chamber-Thin-Film-w-CTI-Cryo-Torr-10-Vacuum-Pump/192962239277?hash=item2ced721b2d:g:FssAAOSwdVBfdFYZ 29-Nov-20 04:32 AM Big chamber! Big cryopump, what looks like a turbo for pumping down before the cryo kicks in, and the big pneumatic gate valve sticking up before the cryopump. 29-Nov-20 06:03 AM I'm searching for a CF DN40 bellow with about 120mm travel, does anyone sell one ? 29-Nov-20 06:27 AM LDS says they can make custom lengths 29-Nov-20 06:53 AM yeah well but since it's a private project the budget ist not that high 29-Nov-20 11:42 PM $3/piece for ceramic chip carriers... I just picked up a bunch for the future.... Some listings are as much as $60/each! https://www.ebay.com/itm/113774466547 05-Dec-20 06:42 AM @Mason_Yu is this the seller that sold you the CP-1 graphite? 05-Dec-20 06:42 AM https://www.ebay.com/itm/164558851134?ul_noapp=true 05-Dec-20 06:42 AM How much do they have? This is the third time I’ve seen one come up on eBay recently. 05-Dec-20 06:45 AM No, I got it from a different seller from New Jersey 05-Dec-20 06:45 AM https://www.ebay.com/itm/Graphite-From-First-Nuclear-Reactor-Dec-2-1942-Paperweight-C922/274592797339 05-Dec-20 06:46 AM hmm are those radiologically interesting in some way? 05-Dec-20 06:46 AM or just nice piece of history 05-Dec-20 06:47 AM They might be 05-Dec-20 06:47 AM I don’t have low enough background to say. 05-Dec-20 06:47 AM Depending on where these slices were taken and how long they spent inside the reactor 05-Dec-20 06:47 AM they might be contaminated in some way 05-Dec-20 06:47 AM They aren’t noticeably above background. 05-Dec-20 06:48 AM These pieces are so small that you definitely need a really well-shielded set-up to see anything whatsoever 05-Dec-20 06:48 AM I have a much larger piece. 05-Dec-20 06:48 AM Might be able to see some Eu-152 and Cs-137 if I'm really lucky (after the lead castle is built) 05-Dec-20 06:48 AM not sure how those would get in the material 05-Dec-20 06:48 AM And it still isn’t noticeably spicy. 05-Dec-20 06:50 AM @GigaSquirrel The reactor used metal fuel, directly in contact with the graphite and scraping on the surfaces as the graphite creates powder that can somewhat contaminate things. But again, depends a lot of where these pieces come from 05-Dec-20 06:50 AM hm, yes 05-Dec-20 06:50 AM I want a piece like carl willis has 05-Dec-20 06:50 AM That I'm afraid might be the only one in the world in private collection 05-Dec-20 06:52 AM https://carlwillis.wordpress.com/2016/06/04/herb-andersons-live-block/ (this, for those who don't know) 05-Dec-20 07:03 AM There’s a second live block in the Argonne museum. 05-Dec-20 07:03 AM It can’t be exhibited. 05-Dec-20 07:04 AM I mean I'd also be happy with a bit of uranium from the haigerloch reactor 05-Dec-20 07:04 AM But I’ve heard of someone who was told to stand on one side of a doorway, and the block was brought to the other side of the doorway. 05-Dec-20 07:04 AM @GigaSquirrel dig for it??? 05-Dec-20 07:04 AM they have a few blocks there, unsecured 05-Dec-20 07:04 AM and iirc the uranium was found, not the RaBe 05-Dec-20 07:04 AM and I definitely don't want a RaBe 05-Dec-20 07:07 AM https://youtu.be/xVG5lWn4hd8 05-Dec-20 07:07 AM She goes looking for where it was buried with a scint probe. Finds nothing. 05-Dec-20 07:07 AM Although if what’s left is RaBe, I wonder if your He3 briefcase might find neutrons. 05-Dec-20 08:24 AM my what now? 05-Dec-20 08:46 AM Don’t you have a massive He3 tube array? 05-Dec-20 10:12 AM ✋ 05-Dec-20 10:12 AM It still doesn't have a proper pulse recorder 05-Dec-20 10:12 AM I was thinking about putting a red pityata on it 05-Dec-20 10:12 AM It may also be BF3, I can't really tell. 05-Dec-20 10:15 AM just send it to me and I'll figure it out for you 05-Dec-20 10:15 AM But it picks up like 50 stray neutrons per minute just from background so whatever it is, it is very sensitive. 05-Dec-20 10:15 AM Must be neutrons too, as blasting it with my x-ray machine didn't do anything. 05-Dec-20 10:15 AM Where on earth stray neutrons are coming from, also a mystery to me. 05-Dec-20 10:17 AM just background 05-Dec-20 10:17 AM spontanious fission of uranium in the ground, spallation in the atmosphere etc 05-Dec-20 10:21 AM @GigaSquirrel If uranium in the ground were to blame then presumably uranium ore would excite it. 05-Dec-20 10:22 AM well, uranium has a low, but non zero rate for sf 05-Dec-20 10:22 AM and I suppose the distribution in the ground results in a bit more U than a piece of ore alone 05-Dec-20 10:22 AM but I am fairly certain that spallation is the main source 05-Dec-20 10:22 AM natural uranium gives 13.5 neutrons per second per kilogram 05-Dec-20 10:23 AM I would think so, as uranium ore didn't seem to increase the count ratenoticeably when I tried it years ago. I certainly didn't have 13.5kg. 05-Dec-20 10:24 AM would be interesting to do a longer count 05-Dec-20 10:26 AM So presumably this was made for looking for nuclear bombs. Is the spontaneous fission rate of those so high that you could plausibly find it with such a breifcase? 05-Dec-20 10:27 AM since pretty much no nuke uses uranium, yes 05-Dec-20 10:27 AM also, fission neutrons have a very characteristic time distribution 05-Dec-20 08:46 PM I have a BF3 tube. Come to think of it, I’m not sure if I’ve powered it and tested it for background. 05-Dec-20 08:46 PM So did I get confused? I thought @GigaSquirrel had the massive neutron tube array. 05-Dec-20 08:46 PM @adammunich is that 50/min with all the tubes powered and counting? 05-Dec-20 08:46 PM How many tubes are in the array, anyway? 05-Dec-20 08:46 PM I’m wondering if anyone has done a neutron-sensitive scan at Haigerloch? If RaBe blocks are still there... how much neutron absorption cross section does dirt have? Would a sensitive detector, like what we’re talking about, pick it up? 05-Dec-20 08:46 PM Then again if there are RaBe blocks, I think it may be best to leave them in the ground.... 05-Dec-20 09:22 PM Yes 05-Dec-20 09:22 PM It has 24? tubes 07-Dec-20 04:31 AM Tim Koeth mentioned recently that he now knows of 15 German U cubes or some number like that. They have all popped up since he found the first one! 07-Dec-20 04:31 AM whaaa 07-Dec-20 04:31 AM damn 07-Dec-20 04:31 AM meanwhile in the koeth household 07-Dec-20 04:31 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/p00yqg8b-51849.png 08-Dec-20 02:25 PM https://www.clockworkpi.com/product-page/devterm-kit-a06-series 10-Dec-20 07:25 PM where can i find some water cooled sputter magnetrons on the cheap 10-Dec-20 07:25 PM Cf275 preferred 10-Dec-20 10:10 PM Accidentally put this in off topic but should have put it here so... If anyone in the bay area wants a free probe station and metallurgical nikon trinocular let me know 10-Dec-20 10:10 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/ced70655-52ce-4606-a466-a91cc54f0079_fulls-42845.jpg 10-Dec-20 10:10 PM (or if you know someone..I need to find a home for this thing) 12-Dec-20 01:28 PM https://www.ebay.com/itm/Radiation-detector-array-with-31-Hamamatsu-Photodiodes-and-CdWO4-scintillators/293887678521 12-Dec-20 01:29 PM 404 12-Dec-20 01:29 PM you need the number, not the name in the link 12-Dec-20 01:29 PM now it works 12-Dec-20 01:29 PM man 12-Dec-20 01:30 PM X-ray imager anyone? That's actually quite a lot of scintillators for the price 12-Dec-20 01:31 PM A decent deal if you can RE that put a coded aperture on it 12-Dec-20 01:49 PM Better off with the gxs700s 12-Dec-20 01:49 PM This is good up to much higher energies 12-Dec-20 01:49 PM Not just x-rays 12-Dec-20 01:49 PM MeVs 12-Dec-20 01:49 PM Might be competitive with CZTs on the efficiency front 12-Dec-20 01:49 PM That said, I'd like to know where to find cheap, working gxs700s 12-Dec-20 01:52 PM @digshadow wrote a linux driver for them 12-Dec-20 01:52 PM You can typically find them on eBay for less than $1,000 if you look 12-Dec-20 01:53 PM Yeah I know, but most of the cheap ones out of China/HK have broken bondwires 12-Dec-20 01:53 PM Or otherwise completely irreparable damage 12-Dec-20 01:53 PM A while ago I bought like 30 of them untested from China and I had about 40% success rate 12-Dec-20 01:53 PM Hmm, maybe it'll be worth the gamble if they are $50 a piece 12-Dec-20 01:53 PM Would be an interesting subject for a radiograph after taking off the shell if they don't work 12-Dec-20 01:55 PM It's on my Low energy projects list to put one of those on an XY table so that I can get super resolution radiographs 12-Dec-20 01:55 PM Of large things 12-Dec-20 04:37 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20201212_163706-28E22.jpg 12-Dec-20 04:37 PM Who's everyone's favorite copper rod and evaporation boat supplier? 12-Dec-20 07:25 PM Have never needed any, however I may need to build up a system for coating steel parts with aluminum in the future. 12-Dec-20 07:45 PM https://www.ebay.com/itm/Molybdenum-Evaporation-Boat-Different-Styles-and-Sizes/184211005376?hash=item2ae3d4dfc0:g:z~cAAOSwswdebWK7 12-Dec-20 07:45 PM molybdenum is a unique metal... 13-Dec-20 12:19 AM https://www.ebay.com/itm/Qnergy-Free-Piston-Stirling-Engine/293815142972 13-Dec-20 03:51 AM Just make sure that your terminals have really low connection resistance... thermal evaporation means you want really low resistance wiring so it doesn’t get hot except for the boat. 13-Dec-20 10:43 AM I ordered some 0.25" copper but now I'm kind of feeling that my chamber might be too nice for evaporation 13-Dec-20 10:43 AM And I should build some kind of crappy one instead 13-Dec-20 10:53 AM @adammunich Are you sure those terminals are not brass? 13-Dec-20 10:54 AM those in particular are 13-Dec-20 10:54 AM i will find out their melting point experimentally lol 13-Dec-20 10:55 AM It is not about their melting point, issue with brass is zinc vapor pressure... 13-Dec-20 10:56 AM hm, wellllll.... i could soak them in a chemical bath to suck out all the surface zinc 13-Dec-20 10:58 AM (I don't have any experience with that), but I think that will not help... 13-Dec-20 10:59 AM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/figure-5-6B451.png 13-Dec-20 10:59 AM drop brass in hcl and the surface-accessible zinc leaves 13-Dec-20 11:07 AM https://www.ebay.com/itm/2-pcs-Aluminum-Blue-Shaft-Coupling-Rigid-Coupler-Motor-Connector-CNC-DIY/353020805184?hash=item5231ae0040:g:AA8AAOSwTBReeq8t 13-Dec-20 11:07 AM these might work if the oxide is removed 13-Dec-20 11:21 AM https://www.amazon.com/uxcell-Coupling-Aluminum-Connector-Accessories/dp/B08H7YYGY8/ looks like they sell them in 6mm too, so you could get the 6mm and drill it out to 6.35 to make an electrical contact 13-Dec-20 11:21 AM seems to be the way to go 13-Dec-20 12:14 PM Tested both of my Bicron surveyors today, they are great value as a count rate meter for very low cost 13-Dec-20 12:14 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/20201213_141149-DC2D5.jpg 13-Dec-20 12:14 PM https://www.ebay.com/itm/2x-Bicron-Surveyor-MS-Radiation-Countrate-Meters/313242216105 13-Dec-20 12:14 PM You can get two for probably $30 13-Dec-20 12:14 PM Takes just two 9V batteries, adjustable high voltage up to 2 kV, and works with every GM counter and scintillation counter I have 13-Dec-20 12:14 PM Only thing is that there are some yellowed plastics. The X1000 rate multiplier does in fact work on both of my meters, but I don't think they are quite accurate and it would sometime randomly jump to the full scale reading 13-Dec-20 12:14 PM I will have to calibrate them once I get the NIM pulse gen, and that process seems to be easy enough with a few pots 13-Dec-20 01:42 PM how'd you wire that probe up? 13-Dec-20 01:42 PM Which probe? The bicron that's on my table? 13-Dec-20 01:43 PM calibration is super easy, just feed in a negative pulse and adjust the relevant potentiometer. generally do ~1/4 and 3/4 of full scale per decade. I've honestly had decent enough results using a capacitively coupled signal from an arduino for lower ranges on one meter 13-Dec-20 01:43 PM yeah 13-Dec-20 01:44 PM Just one HV cable in, I didn't use the signal output from the PCB that's attached to the back of that probe 13-Dec-20 01:44 PM you wouldn't have a photo would you? I've got one of those scintillators I've been meaning to set up 13-Dec-20 01:50 PM Uh I just literally put a random panel mount MHV connector on the HV cable... This is meant to all go inside an enclosure with breakout for the signal and 12V connections for the preamp, I would not recommend this for permanent installation. 13-Dec-20 01:50 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/PXL_20201213_214724292-BD735.jpg 13-Dec-20 01:50 PM The ground wire ties to the ground post on the PCB 13-Dec-20 01:51 PM ok, so you're just taking the signal off the HV line and not modifying the board at all? 13-Dec-20 01:52 PM Yeah, negative pulses capacitively coupled to the meter, it will work for any scintillation detectors that's one-wire, and doesn't require any PCB modifications 13-Dec-20 01:53 PM Ah great 13-Dec-20 01:53 PM Oh, and with your surveyor, was it shooting to full scale with a GM tube or a scintillator? 13-Dec-20 01:54 PM With a scintillator, I don't have a GM tube that sensitive to make it shoot to full scale on x1000 13-Dec-20 01:55 PM It has an anti-saturation circuit which if the current draw gets too high it will assume that there is a GM tube attached that's saturated and peg the meter at full scale 13-Dec-20 01:55 PM that can be disabled by flipping an internal switch 13-Dec-20 01:57 PM Hmm, it is possible that this is what's going on... It only seems to do it with the super cheap bicron NaI scintillators that were used as portal monitors and those are very sensitive, but I doubt they will draw that much current compared to GM tubes 13-Dec-20 01:57 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-ECBFC.png 13-Dec-20 01:57 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-CBDC5.png 13-Dec-20 01:58 PM I'll play with that tonight 13-Dec-20 01:58 PM (yes those are posted backwards, sorry) 13-Dec-20 02:08 PM And I need to try this with the proportional counter too, that's the last thing I need to test 13-Dec-20 02:08 PM Oh and another end window GM tube I pulled out of the dumpster in questionable condition 13-Dec-20 02:09 PM the proportional counter might be a tricky proposition 13-Dec-20 02:09 PM Not sure if the sensitivity is good enough 13-Dec-20 02:10 PM These two front-end comparators seems to have set rejection levels, that is what worries me the most 13-Dec-20 02:10 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-0FD19.png 13-Dec-20 02:10 PM But in the worst case, I will solder to the trace right after the coupling capacitor, make an inverting amplifier or something like that with a LM358, then break it out into a 3.5mm audio jack for taking sound card spectra on the go 13-Dec-20 02:14 PM it also looks quite a lot like the schematic for the bicron analyst 13-Dec-20 02:14 PM Yeah they are basically the same thing 13-Dec-20 02:14 PM but I only have a low low quality scan of that one 13-Dec-20 02:14 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-E83EA.png 13-Dec-20 02:14 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-B9335.png 13-Dec-20 02:16 PM Schematic looks identical to me, the only difference is that you get HV adjustment without having to open the meter up, and there's no reset button on the analyst. Functionally the same 13-Dec-20 02:18 PM Well that and you can set the upper and lower discriminator on the analyst and switch between readings below the two discriminators, anything above the low level one and just readings above the low level discriminator 13-Dec-20 02:18 PM (the reset button is replaced by a window switch) 13-Dec-20 02:27 PM Ah I guess that's what R2 and R4 does on the Analyst 13-Dec-20 02:27 PM Can you mod it into the surveyor though? 13-Dec-20 02:27 PM Would be pretty nice to have "SCA" functionality in this too 13-Dec-20 02:30 PM I'll throw the manuals up in resources 13-Dec-20 02:30 PM wouldn't surprise me 13-Dec-20 02:31 PM Doesn't look that complicated honestly 13-Dec-20 02:31 PM Vacuum%20Hackers%20-%20Text%20Channels%20-%20swap-meet%20%5B513120957821485056%5D.html_Files/unknown-0B6C7.png 13-Dec-20 02:31 PM where's that manual from? 13-Dec-20 02:32 PM https://www.nukeworker.com/study/instruments/manuals/Bicron_Micro-Analyst.pdf 13-Dec-20 02:32 PM Ah cool 13-Dec-20 02:32 PM thanks 13-Dec-20 02:32 PM I think this is the same thing as the Analyst? At least the circuit looks good to me 13-Dec-20 02:32 PM Yeah and this will help make the proportional counter become more functional too 13-Dec-20 02:33 PM let's maybe move this conversation to another channel, like #off-topic-thats-sometimes-on-topic or #radiation