Cutting tools, cutting tool holders and cutting inserts therefor

A cutting element for use in a cutting operation comprising:

• a cutting edge capable of cutting out material from a workpiece during said operation, to form therein a workpiece corner angle (α);
• at least one view of said cutting edge in which a portion of the cutting edge is delimitable by a first and a second tangency lines oriented tangentially to said portion of the cutting edge portion at respective first and second tangency points (A) and (B);
• the tangency lines forming, at the intersection thereof a vertex (O), and forming therebetween a cutting angle (AOB) corresponding to the workpiece corner angle (α);
• a virtual bisector of said cutting angle intersecting the portion of said cutting edge at a third point (C);
• a virtual line (OL) passing through said vertex (O) perendicularly to the plane of said one view;
• and
• an image projection (C′) of the point (C) on line (OL) is located between projections (A′) and (B′) of the respective tangency points (A) and (B) of said portion of the cutting edge on said line (OL).