Homebrew PCBs

If you are looking to go to a film there is a very nice product sold by
M&R Marking. It is a negative film system that has extremely easy to use
water based chemistry. To produce a film you print a positive image
using a standard printer (I have always done it on a laser, but an
inkjet would likely work). You then do a contact print using standard
black light bulbs onto the negative film. Now to develop it you just
spray on a water based fluid from a squirt bottle and wait 90 seconds
then rinse and scrub the film under cool water with a paper towel. The
result is a completely negative film that is as opaque as the films I
have had done by a commercial photo plotter. Product info at:
http://www.mrmarking.com/phnegs.html

Tim
[Denver ,CO]

> While it plots to film, I think you can get a few ideas from 
> it.  And there are advantages if you can generate a good 
> film, such as exposing as many boards as you want from it.