Homebrew PCBs

Are you wanting a safety light that wont affect the photo-resist or a light to expose the photo-resist?

The ready coated presensitized boards are nowhere near as sensitive as photographic film. 
I work with presensitized boards in fluorescent and incandescent light without covering them.
You need light of a specific narrow wavelength to make the exposure work.

John G3UGY   



From: Jeff Heiss 
Sent: Sunday, October 07, 2012 4:38 AM
To: Homebrew_PCBs@yahoogroups.com 
Subject: [Homebrew_PCBs] recommend a dark room light


  
I am doing some tests with dry film photoresist. Can you guys recommend a
bulb that can be used for a dark room light? Are there any simple methods
to using a regular fluorescent or incandescent light for the purpose? Maybe
covering the bulb with a color saran rap as a filter?

Jeff



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