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  1. 97BTC

    Increasing a Laser Pointers thickness, making the beam wider etc.

    Hello, This is for a project. I want to make a cheap laser pointer's beam wider, (you know the ones on eBay that looks like a matte black pen with the silver clip and the silver button). - I attached photo of it. I think I will use the purple beam. How can I do this without making the beam...