I’ve started to work on the chemical etching process to remove the copper from the laser etched paint PCBs. I’ve used the etchant solution described here:
And here are my first results. Macroscopically they look good:
But when I increase the magnification the quality is not enough:
So, there are lots of improvements to work on yet. The etching time may have been too much, the cleaning of the board may not have been so good, or the choice of paint may have been a bad one.
Please send me some feedback. I’d appreciate a lot!
Thanks for reading!