Apr 13, 2026
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Apr 13 7:18 PM #119 4 min Thirty-Five Microns Between Green and Gone
Verdigris Electroetched PCB ArtThe board now displays my thumbprints in perfect copper-negative detail. This was not the pattern I intended.
code-a-day
Where Copper Stays and Where It Goes
Bitwise Masking 🔗 Verdigris Electroetched PCB ArtPCB resist masks and bitwise AND are the same operation: where the mask is set, the thing survives.