| 摘要 |
PROBLEM TO BE SOLVED: To reduce a support removing time by projecting a projection material having lower hardness than a cured resin onto a model support means by a shot blast and removing the model support means from a model. SOLUTION: A part of a model support means 1 which is installed in a slender channel, a narrow, small place 5 of a model 4, in the forming stage of an integrated molded object of the model 4 and the model support means 1, is formed in grid structure made of more than one model support means wall is extending in the channel width direction and at least one model support means wall 1t extending in the channel width direction. The distance between the model support means walls 1t is made greater than that between the model support means walls 1s, and the model support means walls 1s constitute a main part of the model support means 1. In a shot blast, a projection material 7 is projected in the longitudinal direction of a slender channel to hit the model support means walls is at right angles or in the nearly perpendicular direction. |
