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I purchased a new 1 Watt 445nm Blue Laser and my roommates think it's extremely awesome and want to use it when it arrives. I said they can use it on the condition that they know exactly how to use it and to sign a paper saying that I'm not responsible for anything that may happen as a result of...

I have been interested in lasers since I was about 10 years old when my uncle bought me my very own laser pointer. That one broke about 6 months later and I was devastated. I wouldn't say I lost interest, but I definitely didn't care about lasers until about two months ago. I saw a video from...