| 摘要 |
A method of forming a wooden piece is provided so as to manufacture a processed product that has a desired strength irrespective of the state of the grain and so as to improve the yield ratio. To achieve the object, the method includes a reinforcing-member attachment step for attaching an elastic reinforcing member to an area of the inner surface of a wooden piece that is cut out to be substantially bowl-shaped, the area including a point where a change in curvature before and after compression is largest and grain separation is largest; a softening step for softening the wooden piece to which the reinforcing member is attached at the reinforcing-member attachment step in a water-vapor atmosphere at a higher temperature and pressure than in the atmospheric air; and a compression step for compressing the wooden piece that is softened at the softening step in a water-vapor atmosphere so as to deform the wooden piece into a predetermined three-dimensional shape.
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