Designed for generating square sections such as shoulders or tenons where a turned part is to be assembled into a hole – a chair leg is good example. This cutter is also useful on the outside of a round form, as well as long straight sections on spindle work. Excellent results can be achieved in shear scraping mode with cutter especially effective shear scraping on the outside of a bowl. Manufactured with Robert Sorby high speed steel ensures ultimate material reliability. Sharpening: Use a diamond file or honing stone across the top face. To gain best results and increase the longevity of the cutter this simple procedure should be done little and often. Use the TurnMaster cutter holder to reshape the profile on the Robert Sorby ProEdge using a zirconium or ceramic belt or on a grinding wheel using a standard abrasive material. Sharpens to: 0.2 -0.4 microns Hardness: 62 RC Material: M2 HSS. Related Products: These cutters are designed specifically for the TurnMaster.