Sun-powered, sand-fed 3D printer.
Design student Markus Kayser wanted to test his sun-powered, sand-fed 3-D printer, but he knew the gray skies in London wouldn’t do. He decided to ship the 200-plus-pound contraption to Cairo, Egypt, flew there himself, and haggled with officials for two days to get it out of customs. A few small “tips” and 11 hours of driving later, he finally made it to the Sahara. But soon the mercury hit 104 degrees, his components nearly overheated, and he was forced to improvise.