I use a sun lamp in one of those aluminum reflector/clip on bulb holders as a uv source. At a foot away the exposure time is about 1 1/2 minutes for negative dry film. You don't have to build anything. Lay a piece of glass over the film and board for some weight. RD [Non-text portions of this message have been removed]
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Re:setting up the Right Way
2010-01-26 by RDHeiliger