| 摘要 |
PROBLEM TO BE SOLVED: To provide a game board preventing damage in a decorative sheet due to woodchips produced from burrs and allowing a player to safely handle by eliminating the burrs produced when cutouts are formed on the circumferential part of the game board by a router machine. SOLUTION: This game board for the Pachinko machine is so constituted that, when an end mill 14 of the router machine is applied to the circumferential portion 10a of the game board to form cutouts 11, 12 and 13, one or both of corner portions 11a, 12a and 13a of cutting starting tips and corner portions 11b, 12b and 13b of the cutting finishing ends of the cutouts are formed into arc faces or circular faces to suppress the production of the burrs. COPYRIGHT: (C)2006,JPO&NCIPI
|
