The selection is endless.

Imagine a robot that can walk, without electronics, and only with the addition of a cartridge of compressed gas, right off the 3D-printer. It can also be printed in one go, from one material.

Elliott Theunissen, who owns a 3D printing shop in Perth, said he too has been asked to make weapons. "On average I would have one or two people a year trying to get parts for weapons ...

[James Bruton] is on a quest to explore all the weird and wonderful methods of robot locomotion, and in his latest project created an omnidirectional walker that can move in any direction ...