imagesJust think how those punch cutters would have reacted to the news (with a video) that development of a cheaper 3-D metal printer is being supported by GE Ventures. Of course with the main ingredient, the metal powder, costing $120 per kilogram it would not have attracted Gutenberg and Caxton I fear. CNC which Mr Burris refers to, stands for computer numerical control. (Shopbot can do it for you.)