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Sketches of Copper: DIY At-Home PCBs
Posted January 30, 2015 by Chris
"…I thought I should experiment with etching first….Etching removes all exposed copper from the board. So, before etching, you must somehow cover and protect the parts you want to keep. You can draw the tracks, using a permanent marker. It is also common to laser-print them on paper, and then iron on the toner. The photosensitive boards are coated with a special layer, that dissolves in the developer, when previously exposed to UV light…"
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