The present invention provides a non-rotating cutting tool that is easy to manufacture and can be used for finishing. ; The blade 4 (outer edge 5, lower blade 6) is coated with a diamond coating on the entire outer surface of the tool body 2 by a CVD method with a thickness of 6 µm to 20 µm, and the diamond coating using abrasive stone. A rake face and a flank are formed by polishing so that the polishing surface roughness is about 1.60 mu m Rz or less. Since the non-rotating cutting tool 1 is coated with a hard diamond coating on the surfaces of the outer circumferential edge 5 and the lower edge 6 to ensure rigidity, the outer circumferential edge 5 and the lower edge 6 are bent during cutting. It is suppressed and the roughness of the surface can be improved by grind | polishing a diamond film. Therefore, it is possible to easily obtain a non-rotating cutting tool that is secure enough for finishing. ; Non-rotating cutting tool
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