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How 3D printers could be used to solve the US housing crisis

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Unlike traditional homes built with wood and nails that can take weeks or months to frame, companies like ICON are turning to 3D printing to create cement walls and foundations in less than two days. With production costs dropping to as little as $4,000 per home, it could be a gamechanger for the U.S. housing market. Reporting for Weekend TODAY, NBC’s Kathy Park takes a look at how it’s done.