Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

Hello,
The majority of Photoresist materials both positive and nagative are very much resistant to the usual artificial lighting, they require a specific wave length to activate [UV], there is a small percentage of UV in daylight tubes and bulbs so it would be advisable not to take too long when preparing a board for exposure otherwise no special considerations need to be taken, except don't do it outdoors in the sun!!
regards,
David


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