This has to be one of the most interesting and brilliant designs for a 3D printer that I have ever seen. It is a completely analog, and man run machine that requires no electricity, computers, software, or anything else that couldn't have been available in the early 1800's. It is designed by an artist named Daniël de Bruin, and it runs on simple machine concepts. It can print out objects in any paste-like materials, and even prints at speeds faster than those electric 3D printers we see today. It is currently on display at Exbunker in The Netherlands, and it is a genuine piece of work. Read more about this incredible invention at http://3dprint.com/6407/electric-free-analog-3d-printer