Though I’m not a fan of lasers when they’re used for LASIK eye surgery, this fascinating video appealed to the gadget geek in me -- and I couldn’t resist sharing it with all you other technology junkies out there.
The video shows you how to turn a regular MiniMag flashlight into an extremely powerful hand-held laser (that’s strong enough to light matches and pop balloons). It does require some specialty parts and work, namely the laser component from a DVD burner and some soldering, but the steps are clear enough for most anyone to follow.
If you decide to give this one a try, please realize that this laser is much stronger than the typical laser pointers that you can buy. You should not use it for presentations or to play with your pets, and you should avoid pointing it at anyone, even at a distance, as it has the potential to cause serious eye damage, or worse.
Lifehacker.com
Warning: Lasers can cause permanent eye damage. Please wear protective goggles and be careful to not shine any laser into anyone‘s eyes.