In a TED Talk, Behrokh Khoshnevis, a professor of Industrial and Systems Engineering at the University of Southern California, demonstrated automated construction by using 3D printers to build an entire house in 20 hours. Michael Cooney of Industry Tap writes, "In manufacturing we use a process called CAD/CAM (computer-aided design/computer-aided manufacturing). 3D models are designed on a computer and then manufactured using CNC Machines or 3D printers. The design is manufactured into a physical object automatically, with instruction from 3D computer model to physical object without human interface. Automated construction basically scales up this process. The size of the 3D printer is large enough to construct walls by depositing concrete based material layer upon layer to build a wall."
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