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I have no experience with them, but I was thinking of making a laser vortex with a little mirror and cooling fan. Can anyone tell me what power of laser I should be considering? Or, can you point me to a good inexpensive laser to purchase for such a project?
 

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Any standard laser pointer will work. The problem I had was with overheating and battery drain. There was a recent post about hacking a stage laser that is AC powered and fan cooled that I'm going to try if it shows up in time.
 

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Yeah, I saw that, and was thinking about ordering one of those today, but wasn't sure if that was a better alternative than just getting a small laser pointer. Like I said, I have no experience with them, so...
 
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