File this under: awesome homemade gadgets. Youtube user “magx1” built this amazing carbon dioxide laser, in which he uses to slice a xenon glass tube in half, from the comfort of his very own home. Video after the break. Click here for more pictures.

By exhaling into my ‘supply’ balloon, I was able to get pretty good results considering! Unlike a ‘proper’ laser mix of CO2, N2, and He; the ‘breath’ trick appears to have a much narrower pressure range over which lasing will occur.

[via DviceFlickrBB]

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