| 摘要 |
PURPOSE: A manufacturing method of a grinding board for removing chitin is provided, which can manufacture a second plate using a basic plate even though the second plate is damaged. CONSTITUTION: A manufacturing method of a grinding board for removing chitin comprises a first step for manufacturing a basic plate to have a concave part on the surface of a copper plate; a second step for manufacturing a first plate so that the convex part can be formed in the surface; a third step for manufacturing a second plate so that a concave part can be formed in the surface; and a fourth step for manufacturing a grinding plate in which a convex part is formed in the surface. |
