Abstract: A cutting insert includes at least one cutting edge which is formed with at least one projection spaced apart from a cutting corner and at least one recess adjacent the projection.

Abstract: A cutting insert for material-removing machining is formed with at least one generally straight cutting edge and a central flat plateau spaced backward from and at a predetermined height above the cutting edge. A plurality of elongated ridge-like chip-forming elements each extend along a respective longitudinal axis forming a respective acute angle to a respective perpendicular to the cutting edge from a leading end spaced backward from the cutting edge to a trailing end at the plateau and are each formed of a row of discrete bumps defining a contour line having adjacent the rear end a rear portion of a maximum height at least equal to that of the plateau, forward therefrom a front portion of a minimum height, and a rising intermediate portion having a length equal to at least half a length of the respective element.