A metal slitting raresugar saving

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PROBLEM TO BE SOLVED : raresugar saving of metal in consideration of the problems in, generally circular plate body is used, the material of the annular cutting edge of a tungsten metal saw raresugar saving. SOLUTION : the rare metal saving 100 saws, circular plate body 10 and formed of steel material, non-iron material, such as a reinforced plastic material, fitted onto the inner diameter part 11B is formed at an outer peripheral part 10A of the circular cutting blade body 11 becomes, the circular plate body 10 and an annular cutting blade body 11 is formed from a hard edge piece C is formed on the outer periphery of the uneven rare metals. Selected drawing : fig. 1