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Oh huh, I'm using an Edding 140S, in case it matters. It was what they gave me when I asked for a permanent marker, and it worked beautifully. Didn't dissolve at all in the etchant, yet wipes right off with some alcohol.


No doubt, I had no idea which marker to use. Thanks for the suggestion, I want to give it another go since toner transfer is often a hit/miss.


No problem, give it a shot, it worked really really well in my tests, and very easily.


I wouldn't describe the results you show in the photos as "worked really really well". The traces are uneven and full of holes and discontinuities.

To me that's completely unacceptable. I'd throw them in the garbage but I guess I'm too OCD and obsessed about quality to work with hand-etched PCBs.


As long as it works or can be fixed with some bodge, I'm okay with that for prototypes. I do tend to tin the traces wherever they seem 'porous'. For broken traces, I use wrapping wire core soldered on tracks.

But yeah, that isn't pretty!


To me, the circuit did its job, so it worked really well.




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