Homebrew PCBs

OK, I think I may have a retraction to publish....

I've just finished re-doing the Fotoboard step-wedge tests using 
LaserStar film. Seems my laser printer *is* capable of producing an 
acceptably dark black, and that the issues with the Seno developer not 
working were entirely down to setting the timer on the UV box far too 
high and burning the heck out of the photoresist.

For anyone who's interested, the exposure times that worked for me are 
as follows:
   with Stabilo Inkjet OHP film: 75 seconds
   with LaserStar: 170 seconds

Inkjet printer is a Canon Pixma iP4600.
Laser printer is a Kyocera FS-C5200dn.

Cheers,
-- 
Phil.
ygroups@...
http://www.philpem.me.uk/