I suggested this idea before, but people came at me from all sides saying it would be dangerous.
Blindess hazards and whatnot.
Allthough I don't see the fuss if the laserbeam is focussed on a thin, heat-conductive metal plate.
If the plate is heated from below by the beam of a cranked up laser-pen it would become really hot,
pretty fast. Any spice or similair crystals placed on top of this metal plate would quickly evaporise.
You just have to place a small lightbulb over the plate and I think it would make a pretty decent vaporiser.
If you also made the metal-plate piece removable then you could easily clean it if nececairy. Or just
replace it with a new, clean metal plate.
What? Awesome! Please share that video on how to make a laser with us here!
And I bet a proper laser, if cranked up, could supply enough heat. Visit www.kipkay.com
Great site, lots of instructables on hacks of all kinds of devices. In one of them he buys a
proper laser-pen from a webshop(adress in video) which he then modifies to project a more
powerfull, hotter laser-beam. He does this by simply removing the power-button, turning a screw under it a bit looser and putting the button back in place. This pimped up laser-pen
can pop balloons, light matches, burn holes in paper..etc in seconds.
This should do the trick. And if the heat from 1 isn't enough you could always use 2 of these cranked up laserpens, focussing their beams in 1 and the same spot.