scratch pen holder
by CommanderGir, published
Ball bearing supported pen holder to scratch pcb.
The Idea is to scratch a layout on a coated pcb and etch afterwards.
It is described by some other guy already
I have printed it but not jet tried to use it. Since the print was disrupted the tube in the image is a bit shorter and the Plate on the end is not perfect aligned.
print tube once and plate twice.