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Do you guys know of any battery choices that ship fast? The previous batteries I had chosen took a month to ship. I was checking out these, and they seemed like a good choice.

Hello, I am a 15 year old living in Brookfield, Wisconsin. I broke my leg, and was looking around on the internet, when I discovered the hobby of lasers. This is very interesting, and I currently have two 5mw 532nm pen lasers. I was looking to get an upgrade by building my first powerful laser...

http://www.cubote.com Is Cubote a trusted website? I saw they were selling laser pointers for very cheap, and it seemed kinda too good to be true. Does anyone have any experience with them?

I decided I would build a cheap ~20$ laser this week. I am looking at some violet diodes and I think they would be cool. Since this is my first time I need some help picking proper drivers and heat sinks. Basically I need to be spoon fed this stuff because I am completely helpless. I did look...

Never ever made a laser pointer before, and also have no idea how it works. I couldnt find anything that was helpful for a complete beginner. I have no idea how drivers work or anything complicated, and am looking to make a simple 20-150mw green laser for relatively cheap. Any help would be much...