This may be a nit, but I thought that I would ask. I'm just finishing up my UV source for pt/pd printing. I've spent a lot of time on this thing, and if I do say so myself, it's a particle board masterpiece, one of my best. I saw in a thread on this forum the advisability of installing sheet metal just above the UV lights. According to the thread, this helps to get the lights going, etc. I've done this. To my question, I'm wondering if I should paint this surface white? This surface is galvanized aluminum, and it's clear that there's a strong blue component to it's color. Being metal and reflective, especially of blue, I would think I'd be better off leaving it unpainted. It would seem this would do a better job reflecting UV light than white paint. What do you think?