PURPOSE: To improve the working performance and obtain the surface state in high degree and dimension precision by constituting the cutters from the cutting edges which are coating-treated and the cutting edges which are not coating-treated.

CONSTITUTION: As for a surface broach, a number of wave-shaped cutting edges are formed on the surface of a cutter body 1, and the cutting edges 2aW2i are made of, for example, high speed steel, and the cutting edges 2a, 2f, 2h, and 2i are applied with coating, and other cutting edges 2b, 2c, 2d, 2e, and 2g are not applied with coating. When a metal 4 such as S45c is cut, a constitution cutting edge 5 is formed on the cutting edge 2b, etc., which are not treated, and the rake angle increases α→β, and the flow of cutting chips is improved, and the cutting resistance reduces and the cutting edges 2b, etc., are protected by the constitution cutting edge 5. Further, no constitution cutting edge is formed on the cutting edges 2a, etc., which are coating-treated, and the rake angle α does not change, and the working dimension is kept correctly, and the cutting work can be executed according to design.