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burning screens

Posted: Mon May 30, 2011 12:16 am
by Mark Anthony
I have just started screen printing and I am Having a hard time burning screens using velum can anyone tell me how long I have to burn a screen using velum

Re: burning screens

Posted: Tue May 31, 2011 9:59 am
by d fleming
What emulsion/film are you using, what is your light source, do you know how to perform a step wedge test?

Re: burning screens

Posted: Wed Jun 01, 2011 5:55 am
by tompaine
Vellum, used in laser printers, has quite a low density. The exposure latitude can be quite small. Try this: http://www.positivityltd.co.uk/Tutorial ... ation.html
or get a stouffer strip.