Printing Houses... on the Moon

摘要

Berok Khoshnevis is developing a method, called contour crafting, designed to print really large 3D structures-from concrete garden paths to industrial-sized ceramic molds to entire two-story houses, which he claims could be built in a day. So far, he's built full-sized walls, but not entire houses. Like all 3D printing, contour crafting builds layer by layer. The business end is a computer-controlled nozzle and trowels. The nozzle deposits a paste, such as concrete, and the trowels smooth it out, layer by layer.