Here's mine: http://www.delorie.com/pcb/uvled/ I went for the "grid of LEDs" solution - I did NOT want to spread out the UV as they were already pretty well focused and I wanted to avoid blurred edges on my exposures. Maybe one of these days I'll build one that uses a circuit board so I can line up the LEDs more accurately.
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Re: [Homebrew_PCBs] Led uv exposure box
2009-03-30 by DJ Delorie