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I recently received my 150mW "cute pocket green laser" from O-like. It was working fine, but the focus ring was loose so I fixed it with some teflon tape. It continued to work fine until recently. It no longer turns on after being left alone for a few minutes. To get it to work I have to loosen...

I'm looking for an affordable (near or below $100) green laser, 150-200mW, preferably with no start delay and either CR123 or any other common battery. Focus would be a great bonus. Does such a laser exist? If so, where can I order one?

I recently put together a Blu-ray laser using these instructions: I-Hacked.com Taking Advantage Of Technology - Building a High-Power Blu-Ray Laser I have some regular safety glasses (not laser glasses) that seem to block out a lot of the light. The laser can light a match in less than 3...

Hello, I am doing a build using an HD-DVD player diode, using this set of instructions: I-Hacked.com Taking Advantage Of Technology - Building a High-Power Blu-Ray Laser Admittedly, I am new to this. I was wondering if the risk for any type of cancer is high with the laser I'm building. I don't...