3-D Printing Robots Will Build a Bridge in Amsterdam

An conceptualization of MX3D's printers in action. (Credit: MX3D) A 3-D printer that makes steel structures appear out of thin air will try its hand at building — wait, printing — a pedestrian bridge. MX3D is a Netherlands-based start-up that researches and develops 3-D printing technologies. Later this year the company is planning its most ambitious project yet: Using 3-D printers to construct a bridge over a canal in the heart of Amsterdam.