US Patent 7736734 Cutting tool insert

The present invention relates to a cutting tool insert for metal machining comprising a substrate with a first coating and an outermost PVD-layer. The insert further comprises clearance faces and rake faces intersecting to form cutting edges having essentially no edge radius. The first coating has been removed so that the outermost PVD-layer is the only layer on the clearance face at least close to the cutting edge. The present invention also relates to a method of making such an insert. The inserts according to the present invention gives an increased tool life.