--- Log opened Wed Dec 08 00:00:55 2021
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01:05 < nmz787> I might be buying an excavator on alibaba... after watching a bunch of youtube videos on various products and their relationships, I found a specific company that seems to have a good reputation and uses quality parts. So I contacted them, and it ended up being quite easy going chats where I'm just asking what are all the parameters available, costs, etc, and I'm working through customizing a mini 
01:05 < saxo> nmz787: <muurkha> my thought is also "no"
01:05 < nmz787> machine that seems like it will be pretty handy
01:05 < nmz787> this is the second night I have logged on
01:05 < nmz787> they sent me pics and videos as we talked about various topics
01:06 < nmz787> and they suggested I send them pics of my work area
01:07 < nmz787> so now lets see how much damage I've done in terms of a price quote after choosing like 11 or 13 attachments (including buckets, rakes, grapples, auger, hydraulic thumb)
01:08 < nmz787> boom swing, bucket tilt, telescoping tracks (95cm to 130cm)
01:08 < nmz787> this thing might end up having too many hydraulic levers to control things, lol
01:17 < fenn> i'd rather have a plasma cutter and a pile of heavy scrap steel than a bunch of attachments
01:18 < fenn> if the bucket comes with teeth bits it's probably better than you can make
01:19 < fenn> i'm confused why this elon musk quote came out of saxo
01:21 < fenn> my ignore_log doesn't seem to work, maybe i've ignored someone posting links in the channel
01:23 < fenn> oh it's malvolio
01:24 < fenn> right. carry on, citizens.
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03:56 < fenn> more graphs with not-zero on the x axis line
03:56 < fenn> lazyweb please reason about the consequences of this data:
03:56 < fenn> .tw 1468341478363746310
03:56 < saxo> Omicron antibody neutralization thread, with preliminary results, and substantial caveats. Most credit to @DannySheward. We’ve been racing to generate neutralization data as fast as possible, and our first results were read this afternoon (1/n). (@BenjMurrell)
03:57 < fenn> er. i expected a link. here's the original twitter link https://twitter.com/BenjMurrell/status/1468341478363746310
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04:02 < fenn> 1. Omicron still uses ACE2
04:02 < fenn> 2. There is a very large drop in neutralization of Omicron by BNT162b2 immunity relative to ancestral virus
04:02 < fenn> 3. Omicron escape from BNT162b2 neutralization is incomplete. Previous infection + vaccination still neutralizes
04:03  * fenn wonders if "Previous infection + vaccination" means "previous infection neutralizes, and vaccination neutralizes" or "only a combination of previous infection and vaccination will neutralize"
04:07 < fenn> i think it means you need both: https://nitter.fdn.fr/pic/media%2FFBaUC4XXsAI9gZw.jpg%3Fname%3Dorig
04:07 < fenn> (PLWH means "people living with HIV")
04:08 < fenn> (one wonders why they can't just say HIV+)
04:11 < fenn> from @sigallab
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07:40 < Malvolio> https://phys.org/news/2021-12-dna-storage-nanoscale-electrode-wells.html
07:41 < Malvolio> .t
07:41 < saxo> Storing information in DNA: Improving DNA storage with nanoscale electrode wells
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15:17 < docl> .tw https://twitter.com/alexandrosM/status/1366105235689598976
15:17 < saxo> Why isn't 3d printing circuits commonplace? While conductive PLA (PLA + graphite) exists, it is not conductive enough to carry significant amounts of electricity, which makes it far less useful. I have confirmed that conductive PLA traces can be copperplated to circumvent this. https://pbs.twimg.com/media/EvVS8l1U4AIbbEo.jpg https://pbs.twimg.com/media/EvVS_LwVEAMxGsf.jpg https://pbs.twimg.com/media/EvVTCBYVgAE-FSQ.jpg (@alexandrosM,
15:17 < docl> er, meant to post the top tweet
15:17 < docl> .tw https://twitter.com/alexandrosM/status/1366105216702062594
15:17 < saxo> How to build a self-replicating machine // You will need: / - potatoes / - vinegar / - copper / - graphite / - sand // (a sketch) (@alexandrosM)
15:19 < muurkha> better link: https://nitter.hu/alexandrosM/status/1366105216702062594
15:19 < muurkha> .t
15:19 < saxo> Alexandros Marinos (@alexandrosM): 'How to build a self-replicating machine You will need: - potatoes- vinegar- copper- graphite- sand(a sketch)' | Hungary-based nitter instance by Hackerspace Szeged
15:21 < muurkha> yes, graphite coatings have been a standard way to electroplate non-metallic objects since at least the 01850s
15:23 < superkuh> It's finicky.
15:24 < superkuh> I've been doing a lot of nickel acetate and copper sulphate plating of PLA prints lately. Using polyurethane clear varnish with very fine graphite mixed in.
15:25 < muurkha> interesting!  does it work better than just painting the graphite on with acetone?
15:26 < superkuh> I haven't tried that.
15:27 < superkuh> http://erewhon.superkuh.com/3d-print-electroplating.jpg
15:27 < muurkha> nice!
15:28 < muurkha> what kind of trouble are you having?  graphite continuity?
15:28 < muurkha> that's nickel, right?
15:28 < superkuh> I had a shorting bridge grow overnight once and kill a wall wart, but luckily no fire.
15:29 < superkuh> But mostly it's hard to get in cavities.
15:29 < superkuh> Which ... is what I'm all about.
15:29 < superkuh> And yeah, that's nickel and nickel acetate.
15:29 < muurkha> yeah, the standard way to plate through holes is with electroless
15:30 < superkuh> http://a.superkuh.com/partial-benchy-plating.jpg
15:30 < muurkha> because it's just really hard to get the ion to go where there's no potential gradient
15:31 < superkuh> http://a.superkuh.com/other-plating-attempts.jpg - not great but most of the early experiment delaminations were because I didn't pre-sand.
15:31 < muurkha> the first one looks like it was half out of the water?
15:31 < superkuh> Yes. Not much solution.
15:32 < superkuh> Pretty amateurish all around but it's been fun.
15:32 < muurkha> that second one looks pretty appealing, but I see what you mean about the cavities
15:32 < muurkha> have you tried adding brighteners?
15:32 < superkuh> Not yet. I do have some PEG 4000 now.
15:33 < muurkha> it'll be interesting to hear how that works!  there are a zillion possibilities, only half of them secret
15:33 < muurkha> I mean, recipes that are claimed to work well
15:55 < muurkha> the Hales blog he links to is really interesting; http://halestrom.net/darksleep/blog/043_diodes4/ talks about the problems
15:56 < muurkha> Marinos's tweet thread is... a long way from a working system
15:56 < muurkha> but I do think electroforming is a promising approach
16:02 < muurkha> he doesn't seem to have evaluated the alternative technologies he's talking about for efficiency, even to the point of practicality. he links to Andreas Haeuser's 3-D printed solar Stirling engine (which has no regenerator) as if it's a practical power source, recommends gravity batteries, and even "air wells" (dehumidifiers) as sources of water
16:04 < muurkha> I mean I think Haeuser's engine doesn't, but it's hard to tell because you can't get the STL plans without paying him
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16:31 < muurkha> <https://github.com/projectquine/electroplating> seems to be Alexandros's thing
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17:21 < nmz787> fenn: I don't see myself making a jackhammer or rotating log grapple, or auger though
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19:10 < docl> .tw https://twitter.com/DrPhiltill/status/1468772477333557248
19:10 < saxo> Hey Mars settlement fans: I modeled the economics of starting a city on Mars, including the use of Mars resources to build over a few decades, and including income to offset costs. The model indicates much cheaper than @elonmusk estimated here: https://twitter.com/elonmusk/status/1159964499975135232?s=20 .../1 (@DrPhiltill)
19:33 < muurkha> okay, this is Project Quine's real motivation:
19:33 < muurkha> .tw https://birdsite.xanny.family/alexandrosM/status/1460735647782559744#m
19:33 < saxo> Here's where things get crazy. I've been working with @shaunmulligan9 to perfect a technique to 3d print and copperplate PCBs. This means we no longer need a factory or even a voltera machine to make them. https://twitter.com/shaunmulligan9/status/1451984253198163976?s=20 (@alexandrosM, in reply to tw:1460735646213935106)
19:33 < muurkha> they really aren't concerned about 3-D printing resistors, transistors, solar Stirling engines, dehumidifiers, and motors
19:35 < muurkha> what they actually want is to shorten the feedback time from designing a circuit to having it in your hands, because balena.io (the company behind Project Quine) is a remote-first IoT company
19:36 < muurkha> and they're suffering from supply-chain disruptions
19:43 < muurkha> I mean it's clear Alexandros is interested in the whole self-replication question, but he's not making a serious attack on it this year, he just wants rapid circuit prototyping
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--- Log closed Thu Dec 09 00:00:56 2021