A failed 3D print typically goes straight to the trash with a tangle of plastic filament, a misshapen object or a handful of scraps that no longer feel useful. For 16-year-old Benjamin Davis, those leftovers were something else altogether. For Davis, they were raw material, waiting for another chance. The Massachusetts high school student spent hundreds of hours developing a small recycling system to convert discarded 3D-printing plastic into usable filament. His invention addressed a growing waste problem and won him $75,000 at one of the world’s largest science competitions, states an online report by the Society for Science.
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