OK, so this should be labelled with extreme hazard warnings or something. A crazy laser enthusiast actually built his own lightsaber capable of burning straight through things.
The monster 3W laser, made from a diode taken out of a DLP projector bolted to two high-power lithium ion laptop batteries, is capable of burning straight through paper, cardboard, wood, and even a ping pong ball. You certainly wouldn’t want this bad boy pointed in your direction.
Not quite a real flesh-and-blood lightsaber, but about as close as we’re ever really going to get. Just don’t get this thing anywhere near your eyes. [YouTube via TNW]
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