Just in case any are interested, I Electro-etch most boards.
(Reverse Electroplating)
Than just a bit of Ferric Chloride to finish them off at the end as
it is impossible to Electro-etch the last little bit.
This Reduces my cost to almost Nothing.
See the "Electro Etching" article on my Webste at:
http://www3.telus.net/chemelec/Projects/Projects.htmI use Shipleys Photo Resist. They have recently Improved it and it
works fantastic.
One other piece of advice, Print Two Positives and tape them one over
the other. It gives a Much Better Contrast for blocking the
Ultraviolet.
Take care.........Gary