| 摘要 |
PROBLEM TO BE SOLVED: To manufacturing an ornament formed of precious metal having a delicate shape and a variety of three-dimensional shapes. SOLUTION: A three-dimensional model 1 is manufactured by using a yarn 2 formed of cotton or synthetic fiber, a solidifying agent is applied to the mode 1, the model with the solidifying agent applied thereto is covered by gypsum 11, the gypsum is heated to lose the model 1 and form a cavity 13, and the ornament of precious metal is manufactured by pouring molten metal in the cavity 13.
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