Les,
Excellent post.
Masny will find that TT combined with CNC drilling is a bad
combination. (Assuming the CNC is of decent accuracy<G>)
Ballendo
--- In
Homebrew_PCBs@yahoogroups.com, Les Newell <lesnewell@h...>
wrote:
>
> I think I'll stick to photo etching. Print onto transparency with
my
> cheap Epson inkjet (green works best for some reason), expose in a
light
> box for 7 minutes, Develop in weak caustic soda solution for 2
mins,
> etch. Works great for me :-) Afterwards I stick board in the cnc
mill
> and drill the holes for a perfect finish. Apart from the hassle of
> rubbing off the paper and fixing track breaks with an etch resist
pen
> the distortion you get with TT made it impossible for me to drill
the
> holes with CNC.
>
> Les