Giant 3D printers: An idea for reducing construction waste

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One company uses a giant 3D printer to prefabricate studios off-site. Image by Mike Royer.

Construction waste comprises almost a third of our landfills. That’s partly because the way we make buildings hasn’t changed much in more than a century. But now several construction startups are building homes quickly and affordably while creating minimal waste, with the help of giant 3D printers.