| 摘要 |
The invention is directed to a cutter comprising, a base plate formed by bonding two sheets of thin ring member together, a plurality of projections formed thinner than the base plate on the peripheral edge thereof, an provided with holes and slits which are interposed therebetween, wires passing through the holes so as to connect the projection, and a ring-shaped cutting body including abrasive grains and formed around the projections so as to expose a portion of slits. Since the projections are formed thinner, abrasions easily take place thereon when the cutter is used. Furthermore, the cutting body at the slits is reinforced by the wires connecting the projections. Since the base plate is formed by bonding two ring members, it has a large strength as compared with the base plate used in the conventional cutter. Therefore, the base plate hardly breaks when using the cutter.
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