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DissolvPCB enables fully recyclable 3D-printed circuit boards with liquid metal conductors
(3dprintingindustry.com)
this post was submitted on 11 Aug 2025
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I'm curious about the durability of these PCBs. They would be good for prototyping but how well would they handle high humidity environments?
You might be able to coat them, but for long term applications I think you'd be better off etching FR4 the old fashioned way. This sounds like a huge breakthrough for low cost rapid prototyping, though.
Yea these would definitely need a hydrophobic coating for any real-world use - PVA starts degrading above 70% humidity, so you'd probably want to seal it with something like acrylic conformal coating or even just a thin layer of epoxy if your going to use it outside a controlled environment.