2112: image Sharpening stone grinding teeth have prôfin shape of a toothed rack.a. using a Grinding stone has prôfin shape of a toothed rackb Grinding stone with two disk set. inclined at an angle so that the two faces of two football Beauti created prôfin.According to this method, using a sharpening stone can also be prôfin shape of a rack (1,801 a) and can also use the two stones placed disks tilted at an angle so that the two faces of two football Beauti created prôfin trapezoid a rack (2,585 b).
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