Abstract: A cutting portion of an integral cutting tool or of a cutting insert adapted for mounting onto a cutting tool holder to form a cutting tool, which comprises a plurality n of cutting edges. The cutting portion extends along a cutting path about a central axis. The cutting path (CP) passes through a point of each of the cutting edges which is at a maximal radial space R from the central axis, such that (formula I), where D=2R and ? is the angular extension of the cutting path about the central axis (X). At any given point along the cutting portion, (formula II), where L is one of the following: i. the extension of the cutting portion in a direction perpendicular to the cutting path; and ii. the extension of the cutting edges in a direction perpendicular to the cutting path.

Abstract: A cutting portion of an integral cutting tool or of a cutting insert adapted for mounting onto a cutting tool holder to form a cutting tool, which comprises a plurality n of cutting edges. The cutting portion extends along a cutting path about a central axis. The cutting path (CP) passes through a point of each of the cutting edges which is at a maximal radial space R from the central axis, such that (formula I), where D=2R and ? is the angular extension of the cutting path about the central axis (X). At any given point along the cutting portion, (formula II), where L is one of the following: i. the extension of the cutting portion in a direction perpendicular to the cutting path; and ii. the extension of the cutting edges in a direction perpendicular to the cutting path.