http://www.humansinvent.com/#!/13134/robohand-the-low-cost-3d-printed-prosthetic-hand/
Go to " Printed hand / Open source / Changing lives When carpenter Richard Van As cut off four of his fingers on his right hand in a circular saw accident in 2011 he was presented with a problem: how to continue his work as a carpenter without bankrupting himself on a prohibitively expensive prosthetic hand?