Applied Science video on SLA printed circuits: https://www.youtube.com/watch?v=Z228xymQYho
Favorite copper plating bath recipe:
Heat 250ml deionized water to 60*C in a 300ml beaker, stirring at 350 RPM
Add 2.5g CuSO4*5H2O, wait until dissolved Add 4.6g EDTA disodium dihydrate, wait until dissolved
Add 0.84ml of 1% Triton-X 100 solution in water Dissolve 5.8g NaOH in 30ml DI water, stir until clear, then add to bath Add 4ml Formaldehyde (37% HCHO)
Lower stirring to 100 RPM and begin filtration with 0.5 micron syringe filter and peristaltic pump.
No intentional oxygenation or bubbling.
Filter return is below surface for minimal splashing.
I experimented a little with PEG and 2 2' Bipyridine, but didn't find them impactful enough to discuss in this video.
LED rectenna designs: https://josepheoff.github.io/posts/1-hatband https://www.nrl.navy.mil/STEM/LEctenna-Challenge/
Electroless copper references: https://www.nmfrc.org/pdf/p0295g.pdf
Copper chromite catalyst: https://www.sigmaaldrich.com/US/en/product/aldrich/209317 Possibly available here: https://www.kremer-pigmente.com/en/shop/pigments/pigments-of-modern-age/spinel-similar-pigments/47420-spinel-black-no-42.html It's been backordered for a month, so I wasn't able to test it.
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