Drill bit with cutting insert

A method of manufacturing a twist drill, comprising the steps of:

• forming at lest one cutting insert comprising an abrasive compact bonded to a cemented carbide backing, and having a prismatic shape including first and second adjacent facets forming a predetermined first angle with each other, the forming step including the steps of (i) forming the first facet with a cutting edge comprised of the abrasive compact, (ii) forming the second facet with a seating surface comprised predominantly of the cemented carbide backing, (iii) cutting an elongate strip from a larger composite abrasive compact body, and (iv) cutting the strip into a plurality of cutting inserts;
• providing a drill body including at least one flank located at a front end of the drill body and at least one face extending rearward from the flank;
• forming at least one seat in the flank of the drill body, and defining a support surface to support the seating surface of the insert and inclined at a predetermined second angle to the face of the drill body;
• and
• bonding the cutting insert in the seat of the drill body, so that the cutting edge of the insert defines a major cutting edge of the twist drill and the first facet of the insert coincides with the face of the twist drill.