Enrico Dini is the man behind Monolite UK, a company that hopes to start producing and selling 3D printers under the name D-Shape. However, Dini's printers aren't for printing creations and logos, or even prosthetic jaws — they're for printing buildings. As it stands, if you want to make a complex structure out of something like stone, you need to build with Portland cement — a messy, time consuming, labor intensive and error-prone business. D-Shape's printers simplify things, using a computer-driven printer to turn a CAD model into a real structure one layer at a time. The new building method makes it easy to reproduce features like domes without any of the complicated forming needed for concrete. As a matter of fact, unlike similar technologies from the likes of Loughborough University in the UK, no cement is necessary at all — D-Shape's printers use a special inorganic binder and ordinary sand as the only raw materials. The non-epoxy binder is composed of two parts — sand is mixed with a solid catalyst, and the mixture is then exposed to a liquid binding agent. The surplus sand that doesn't get printed acts to buttress the structure, and can be reused for the next print. Font: TheVerge.com