Fortunately, the incorporation of force feedback in a virtual sculpture system does not need to follow the same strict constraints of a physical or surgical simulator. Indeed, there is no strong need for tactile realism in virtual sculpture, since the aim is rather to enhance the artist’s ability to be creative. This freedom allows the use of new techniques, offering a more expressive haptic rendering, similar to the way non-photo-realistic rendering [11] enhances certain aspects of the models being displayed. This paper proposes an effective solution to the incorporation of expressive haptic feed- back in a volumetric sculpting system, together with a simple solution for reducing the instability.
