A solar-powered 3D printer can turn regular grains of sand into glass, technology that experts say can potentially turn remote desert areas into thriving, large-scale industries. The Solar Sinter, developed by German designer Markus Kayser, uses solar power to melt sand grains and shape them into the desired product, resulting in a cost-effective means of creating material. "I would really love to see companies using or developing this process into a business," Kayser said. "Many ideas remain stuck in university, but it would be nice if the Solar Sinter concept became a commercially viable process as, in the end, it's free and clean energy."

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