| 摘要 |
PURPOSE:To project easily the stone grain embedded in a binder dressing by use of a special binder. CONSTITUTION:In dressing a resinoid grind stone 3 which binds alumina stone grain 1 with thermosetting synthetic resin, the surface of the resinoid grind stone 3 to be ground is ground by a soft grind material which binds the dressing grind stone grain with organic binder such as PVA resin to allow to remove only the thermosetting synthetic resin positioned between the grains effectively and controllably so as to permit the exterior grind stone grain 1 of the resinoid grind stone 3 to project from the binder 2 surface outwardly and sharply. |
