Robohand - 3D-Print An Inexpensive Mechanical Hand Yourself

After Richard Van As, a master carpenter in Johannesburg, South Africa, lost four fingers in a work accident, he decided to use the tools available to him to remedy his situation. He traded ideas with Ivan Owen, of Washington State, who used his prior experience with mechanical prop hands to make design suggestions. Their collaboration resulted in the Robohand, a set of mechanical fingers that open and close to grasp things based on the motion of the wrist. When the wrist folds and contracts, the cables attaching the fingers to the base structure cause the fingers to curl. Nearly all the parts of an inexpensive Robohand are 3D-printed on MakerBot Replicator 2 Desktop 3D printers. Robohand was not imagined as a service or a product, so all of the design files and instructions for creating one are on Thingiverse. People around the world can assemble Robohands for themselves or for others.