Your Walmart might be 3D printed — firm building more than a dozen 3D-printed Walmart expansions with concrete-printing robots

For years, 3D Concrete Printing (3DCP) has been an experimental novelty. Alquist 3D, based in Greeley, CO, is pushing the technology past the nstration phase with their A1X, a robotic arm printer that lays down inch-thick layers at a whopping 200mm/s.