Rapid prototyping is a discrete/stacking process. It proposes a new thinking mode dimension model from the molding principle, that is, the three-dimensional model of the parts made on the computer is meshed and stored, and layered to obtain the two-dimensional contour information of each layer section. The contour information automatically generates a processing path, and the forming head selectively cures or cuts a layer of the forming material under the control of the control system to form a profile of each cross-section, and sequentially stacks the three-dimensional blanks. The post processing of the blank is then performed to form the part.