Cool? Bloody stupid is what I call it, and I hope he gets sued into oblivion by the first one going blind permanently.
If that thing shines into your eyes for only a millisecond, even if only by reflection on a polished surface, the optical nerves in your eye will be destroyed before you have the time to blink. Literally.
A 245 mW laser is not a toy. It is a weapon that will permanently blind anyone unfortunate enough to get the beam into his or her eye.
And of course he had to publish the instructions to make one so that every stupid teenager or malicious twat could make it and do irrepairable damage and get away with it.
Anyone using such a thing in my or my family's vicinity would quickly discover the
hard way that I have very low tolerance for stupidity, especially if it put me or others in grave danger.
