A Dutch architect unveiled a unique 3D printer with which he aims to construct a large building "without beginning or end" shaped like an infinite loop. "It's just like a normal printer," architect Janjaap Ruijssenaars told AFP as he presented the tool he hopes to use to build what he has dubbed the "Landscape House". "But instead of putting ink onto paper, we are putting a liquid onto sand which solidifies wherever the liquid has been ...