David Berkstresser 3D sand-wax printer - July, 1996 from file shape autocad Watch Video
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⏲ Duration: 11 min 87 sec ✓ Published: 31-Mar-2020
Description: This historically significant machine represented a huge step forward in the embryonic world of 3D printing. Created in 1996, it processed a CAD model by slicing it and injecting hot wax into .1-inch layers of sand. Once complete, ports were opened to carefully drain the loose sand, leaving a
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