Aortic valves, fighter jets, coral reefs… pizza? Just four of the headline-grabbing products dished out by 3D printers over the last two years. Alongside this dramatic experimentation with a not-so-very-new technology comes the usual round of wild speculation: a 3D printer for every home, the end of manufacturing as we know it; 3D-printed firearms, the end of civilisation as we know it. 3D printers […]