TWI808260B

An end mill which has excellent strength and durability, and which, while having a small diameter, comprises multiple cutting blades well attached to the main body, and a simple manufacturing method thereof are provided. This end mill comprises: a main body in which multiple embedding areas are provided and which rotates around a rotation axis; and multiple cutting blades which are embedded and fixed in the multiple embedding areas and which are configured as the outermost diameter. In this end mill, the cutting blades include a sintered diamond, the twist angle of the cutting blades is 0°, and the outer diameter is less than 10 mm. The cutting blades are embedded and fixed in the embedding areas such that the extension lines of the cutting blades do not pass through the rotation axis. This end mill manufacturing method involves embedding the cutting blades in the embedding areas of the main body, and fixing the cutting blades in the embedding areas by vacuum brazing or high-frequency brazing in a state in wh