aspire
The Water Cooling Guru
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Actually many high powered lasers need to be focused when they are pointed far away. The point is too big and not focused. There are some $100 ones that can pop balloons. I have a 20mw green laser i got for 30 bucks. Its pretty fun to play with.
Yes but when you are doing it to burn bugs I don't think you need to focus it after 2 feet.