Is filament made from astronaut urine the next giant leap for 3D printing in space?

Clemson University researchers are developing a technique for turning human waste into recycled 3D printing filament. With special microorganisms, both urine and exhaled carbon dioxide could be turned into usable materials for 3D printing spare parts, tools, and other useful items.

from 3ders.org - http://www.3ders.org