“3D printers are great at creating small objects – and some can even be pressed into doing larger things, such as cars – but a 3D printer able to print a full-sized house would have to be, well, bigger than a house. To tackle this problem, a team of researchers from the Institute for Advanced Architecture of Catalonia (IAAC) in Barcelona removed the size restrictions of a printer altogether by using mobile 3D printer robots to print directly on site.”

Source: www.gizmag.com