3D Printed Circuit Boards
Pen Method
CNC Method
Laser Printer Method
Parts used:
Pen mount https://www.thingiverse.com/thing:316...
Staedtler Pens http://go.toms3d.org/Staedtler
Tom tried .6 ... .3 better https://amzn.to/3lrQ7z6
Faber Castel
Etching solution http://go.toms3d.org/Na2S2O8
Ender 3 -_- http://go.toms3d.org/Ender3Ali/