OPTICAL SHAPING METHOD

PURPOSE:To improve a mold clamping property and prevent the obstruction of optical polymerization due to oxygen by overspreading the upper surface of a photocuring resin composite with a fluid organic substance being separated with this resin composite and having a low density, and photocuring it through the layer in molding a three-dimensional object by photocuring. CONSTITUTION:On the front surface of a photosetting resin composite consisting of 2,2-bis[4-(acryloxydiethoxy)phenyl] propane 96 pts., camphorquinone 2 pts., and N-diethylaminomethylmethacrylate 2 pts., coating is effected with a fluid organic substance having a density lower than this resin and a small polarity, for example, fluid paraffin or the like. Namely, a photosetting resin composite is disposed in a glass Petri dish within an illustrated inactive gas substitution vessel 1 and the surface is coated with fluid paraffin in a thickness of the order of 0.5cm. Then, photocuring is performed by applying argon laser from the upside of the Petri dish. After the curing, a hardened substance under the fluid paraffin is removed.