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NASA testing space-based 3D printers to create tools on trips to Mars

When something breaks in space, ordering a replacement part can be an astronomical inconvenience.  Yet, what if astronauts could simply produce the components they needed on demand? NASA is currently testing a new breed of 3D printers that can create pieces of equipment in low parabolic flights on Earth – and they hope to one day send the technology to Mars.
via Inhabitat

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