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

I know, someone else has already thought of this but if not, here is
an idea.

A while back I suggested the possibility of an altered ink jet
printer that could be used to print resist onto a circuit board.

Another idea I had was to use a plotter (or even a CNC machine) and
a resist pen to draw out the resist areas. I have not used a resist
pen yet, so I don't even know how fine of a line you can draw with
them but I think you get the idea.

I know, you are thinking "If I have a CNC router, why not just mill
the trace outlines". I agree, but I am just wondering which would be
more efficient with regard to time and tooling. Those little mills
are pretty pricy and I would guess they don't last very long. But,
at the same time, I am not sure of the cost of etchants and resist
pens.

Just some thoughts I need to share and ponder.