Virtual clay

Via Transmaterial 

Researchers at Buffalo's Virtual Reality Lab have developed a virtual sculpting system that replicates in real time the physical act of sculpting a block of clay. A special glove records the force exerted by the hand in manipulating and shaping a block of clay. Force-feedback, hand position, and speed of fingertip motion are communicated to a computer, where the virtual clay is shaped precisely to the contouring of the actual clay.