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Author Topic: Anyone using LED lights for contact printing?  (Read 1340 times)

deanwork

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Anyone using LED lights for contact printing?
« on: April 01, 2017, 03:04:54 PM »

Hello, I am going to be building a contact printing box to expose OHP negatives for Platinum/Palladium and Gum printing, as well as some silver contact printing.

Is anyone using LED lights in such a lightbox and if so can you comment on how the compare to uv fluorecet in regard to fluorescents in terms of exposure time. Also since there are so many types of led lights on the market, which work best for this sort of application?

Any help would be appreciated.

John
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deanwork

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Re: Anyone using LED lights for contact printing?
« Reply #2 on: April 07, 2017, 07:36:32 PM »

Thank you so much Chris, I knew someone must have it online somewhere but none of the alternative process people were talking about them on their forums. I'm going to build the 35x45 size unit. If the led lights degrade in a couple of years that is fine. I'll just replace them.

john


This may be helpful for ya...

http://www.largeformatphotography.info/forum/showthread.php?122508-LED-UV-Light-Box-Build-Your-Own-for-Under-150

and this too...

http://gregbrophy.com/blog/how-to-make-a-uv-led-exposure-box

Have fun!
CB
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