• A discussion explored how to fabricate complex 3-D metal micro-structures with ~5 µm feature sizes for fractal micro-electrodes; subtractive MEMS processes and university clean-room FIB shops were mentioned, but additive options are scarce.  
• Two-photon UV polymerization (Nanoscribe) and a German service bureau (MicroTec-D) were cited as the closest commercial routes, though costs were expected to be “dumpster-truck” scale.  
• Participants debated whether true 3-D metal printing at these scales is still confined to a handful of research labs and would constitute a multi-year project rather than a purchasable service.  
• A practical workaround suggested printing the geometry in polymer and then metallizing the surface, or embedding metal during the build.  
• nmz787 provided a curated reading list: a review on 3-D micro-additive manufacturing (LCVD, FIB, materials comparison), plus specific papers on micromachining and advanced materials, all retrieved via paperbot.  
• paperbot itself was demonstrated as an on-demand, lib-gen-linked PDF fetcher for pay-walled academic articles.  
• heath noted prior open-hardware work on LED selection for a DIY gel illuminator/PCR machine.  
• kanzure shared a small GitHub utility (fakehostname) for spoofing hostnames.