I was wondering if its possible to build a UV light box with LED lights. I know some people have used them for enlargers, but didn't find information about the use of LED lights for alternative printing.

I read Sandy's article on unblinkingeye and it seems most processes are sensative to the range of: 320-400nm, and others up to 450nm.

So I was reading up on LED lights and found the following types.

375nm (peak) 350-410nm (range)
395nm (peak) 350-440nm (range)
426nm (peak) 400-450nm (range)

If I were to make an array of these lights, wouldn't it be possible to use this as a UV exposure unit? Print things such as, Kallitypes, Platinum, Palladium ect...

What are your thoughts or suggestions on this?