Patent ID: 7323132
Filing Date: 2008-01-29
Classification: B29C,B33Y

Abstract:
1. A method of making a three-dimensional object, comprising: (a) forming a powder material layer of inorganic material; (b) irradiating an optical beam on a predetermined portion of the powder material layer to form a first sintered layer and integrate the first sintered layer with a second sintered layer just below the first sintered layer; (c) repeating (a) and (b) to form a sintered block united with a plurality of the first and second sintered layers, the sides of the sintered block including a concave portion formed on a lower part of the sintered block; (d) accenting a hanging portion of an excess portion by the concave portion surface of the lower part of the sintered block; (e) removing the excess portion from a surface of the sintered block; and (f) repeating (c) to (e) with respect to the sintered block from which the excess portion is removed, in order to make a target shape of a three-dimensional object united with a plurality of the sintered blocks.