We thought some of the circuitry looked precarious on the glove, too. For the robot hand, he used balsa wood and hinges for each joint. Flexible thread provided the return power like a spring.

How it's made The hand features 'Multiple Muscle Tissue Actuators' (MuMuTAs), thin strands of lab-grown human muscle tissue rolled into bundles resembling sushi rolls. These MuMuTAs act as ...