Throw away insert

A throw away insert having a top surface, a bottom surface substantially parallel to said top surface, and a plurality of side surfaces, at least one of the top and bottom surfaces forming a rake face, a plurality of cutting edges extending along the edges where the top surface meets the side surfaces, a first chip breaking projection formed on said rake face, said first projection being truncated conical and concentric to a circle inscribed to all the cutting edges and having a diameter of about 0.3 to 3 millimeters smaller than the diameter of said inscribed circle and being about 0.1 to 1 millimeter above the cutting edge, and a plurality of second chip breaking projections disposed between each nose portion of the insert and said first projection.