After starting off with what looks like a jaunt through the dunes of Tatooine, this video from Markus Kayser will eventually bring you to a 3D printer that uses the immense power of the sun to turn sand into glass.
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Source: http://feeds.gawker.com/~r/gizmodo/full/~3/DvLJbpLC6-U/3d-printer-harnesses-the-sun-to-transform-egyptian-sand-into-glass
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