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It was Saturday night, on July 3rd 2010. My room was filled with the glow of a large red pilot lamp. Just outside, I could hear the thumping sound of a nearby firework display, celebrating the upcoming 4th of July. However, I was celebrating with some fireworks of my own - fireworks of different...

Hi, I've been interested in lasers since I was in the 6th grade. I recently built a ruby laser. Over time, I have been able to improve this system. I can now burn holes through screwdriver blades, knives, spoons, saw blades, and even a quarter. If you would like to see pictures of this laser...