This is a really nice UV light box for making PCBs. It supports double sided boards, has a built in timer, and a safety switch to turn off the unit when opened. Looks like a great alternative to expensive commercial versions.
I’m just toying around with this idea at the moment. If I start using photo exposure PCB type production, I’m probably going to need a light box. I have tried using spray on photo-sensitive resist and exposure to the sun. It was a complete failure. Presensitised boards, and a light box seem the way to go. I haven’t read much about this technique on the web, so I’m still a bit cautious.
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This type of light box when combined with UV bulbs is extremely dangerous. Aside from the safety they are a pain in the rear end because you get about 90 seconds, +/- 2 to get a proper exposure. Stick with ordinary fluorescent bulbs and that grows to about 10 minutes, +/- about 1 minute so you have plenty of room for error and you still get good board.
Try not to go blind.
This is an interesting application for UVC lights, what is the advantage of UVC over a daylight or other fluorescent light in making PCBs?
http://www.uv-sterilizer-directory.com/