Of late, people working in specialized fields such as industrial design, architecture and the medical and dental industries have been going gaga over 3D printing, a process in which three-dimensional solid objects are produced on a special printer using materials such as molten polymers. However, this technology may be trumped by research on so-called self-sculpting sand being conducted at the Massachusetts Institute of Technology. The material’s not really sand. Instead, it’s what you might want to consider pebbles — cubes measuring 10 mm to a side.
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