Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

That is an interesting thought. I happen to have an old Hermes engraving pantograph with a diamond tip. I could print the PCB out 2:1 and trace the spaces between lines to scratch the copper through to the substrate, which would isolate all the copper that I want to keep. As an alternative I could spray paint the copper and scratch off the paint where I want to remove the copper, followed by etching the copper in the scratches. I have used this technique before, but used an exacto knife or carbide scribe to hand scratch the paint off instead of a pantograph. I will have to try it and see what happens. It should work for fairly small boards in any case.

Bob


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