I'm a bit of a ghetto tinkerer. I saw some UV LEDS on Ebay and I thought I'd buy some to see if it's applicable for alt processes.
After receiving them a month ago, I was able to play a bit on my work bench. So far, it seems to work with cyanotypes.
Here are some pictures. http://www.flickr.com/photos/maineco...7641172069904/
I got the heat sink from a scrap pile from work and borrowed a power supply. Optimal voltage is about 3.5v and draws .78 amps. My plan is to mount 10 on them on an aluminum heat sink that is 10x12 inches.