On the topic of laser safety. If I see anyone messing around with a powerful laser (class 3 upward) without taking the neccessary precautions I *will* put @c3cert on it. Please leave your oversized laser "pointers" at home (feel free to threaten your own eyes).
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Laser classes are useless. The danger posed by a laser is way more complicated than what class it is. Any useful scanner is going to be Class 4 (mine is), but there's a huge difference between a laser pointer (static beam) and a scanner at a minimum distance.
For example, a scanner projecting a 1m diameter circle (quite a simple pattern) will only deliver about 1/400th the energy to a human eye that the same laser running CW as a static beam would. It goes lower with more complex patterns and wider beams and larger projection widths.
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I'm very happy to use my projector taking basic security precautions (point it at a wall, keep people away from the area between it and the wall), but I also own (not by choice) a 1W pointer and I don't dare turn it on without wearing goggles, because that thing is *nasty*.
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I'd love to see your machine working. Particularly you know a lot and like to share your knowledge ... that's cool. So, let's sort it out this year. Maybe I have a chance to see it at 35c3.
End of conversation
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