PURPOSE: To facilitate reproduction, provide sharpness equivalent to that of a new tool and improve an antiwear property by forming a rotary cutting tool without forming an inclusion edge with polishing in the reproduction while holding a coating layer in the part of the inclusion edge.

CONSTITUTION: A rotary cutting tool 1 is a solid type straight reamer formed integrally with a cutting edge 2 and shunk 3, i.e. the cutting edge 2 is composed of an inclusion edges 4 at the tip and parallel cutting edges 5 forming a margining part for vanishing. Two notch-like recesses 6 having a V-shaped groove are formed on the outer periphery of the respective parallel cutting edges 5, and the respective recesses 6 are formed on the rear end side with inclusion edges 4a, 4b which have been previously polished to have the same shape for reproduction. On the other hand, after the tool is produced as the reamer, the whole is subjected to coating process with PVD. When the sharpness of the reamer is degraded during the use, the reamer is cut off by a diamond cutter or the like along the line V-V leaving the inclusion edge 4a at the rear end side, and the tip side is scrapped.