US Patent 10099422 Method and system for additive-ablative fabrication

A method of solid free form fabrication (SFF) is disclosed. The method comprises: receiving SFF data collectively pertaining to a three-dimensional shape of the object and comprising a plurality of slice data each defining a layer of the object. The method also comprises, for each of at least a few of the layers, dispensing a building material on a receiving medium, straightening the building material, and selectively ablating the building material according to respective slice data.