The humble magnifying glass -- that simple toy of childhood so readily turned into an ant-frying death ray -- just got an upgrade. It's called the Sun Cutter, and it turns the desert sun into, well, a sort of laser printer:
A mix of artistic commentary and clever engineering, the Sun Cutter and Solar Sinter might not be as versatile as their lab-dwelling counterparts, but they need much less in the way of infrastructure for support. The Sun Cutter focuses sunlight using a fixed ball lens, while cams on a solar-power-driven timing belt control the motion of a platform on which the raw material sits. The current incarnation of the Sun Cutter can cut paper, card, and plywood up to 0.4mm thick, and cuts out the frames of a cute, clever pair of sunglasses. How’s that for meta? Meanwhile, the Solar Sinter uses a different--and more easily acquired--feeder material than most other selective laser sintering (SLS) printers. Instead of powdered resins, plastic, or metals, the environmentally friendly 3D printer uses sand, plain old silica.
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