This 3D-printed foam expands up to 40 times its original size

This 3D-printed foam expands up to 40 times its original size
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Until now, the size of 3D-printed objects has been limited by the size of 3D printers. In most cases, in order to produce large items used in, say, aerospace, manufactures have had to fasten, weld or glue smaller 3D-printed substructures together. But that mi…
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