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Looking to buy CR2 and CR123 for two of my lasers. I don't know which ones to buy and where. There are a variety of brands, chargers and batteries with different powers. And I can't seem to find chargers for these special shaped batteries. Would I have to buy them online? or do any walmart or...

United Nuclear - Scientific Supplies Found a nice site that sells chemicals and a variety of phosphorescent items. Uranium ore, uranium doped marbles, and even europium powder in green and blue! I ordered the powder in green myself. It's supposed to be very bright with UV exposure(hint hint)...

looking for neat diffraction gratings, marbles, lenses. anything that puts on a neat show! Paypal verified, thanks

I've been a long time lurker around these parts and have been more than enthused about lasers. So I decided to join the community! As a college student, I don't have the time nor inclination to build my own. So to get myself back into the hobby I would like to buy/trade for a pre-made custom...