ISOTURN INSERTS USER GUIDE Negative Chipformers M4MW Chipformer 0.3 13º Chipformer for heavy machining applications on stainless steel. The inserts 21º feature a very positive radial helical cutting edge and a positive rake angle. TF Chipformer Double-sided positive rake angles to prevent strain hardening. The rake angle varies along the edge to a negative angle which prevents chipping. Special design reduces cratering. Used for carbon and alloy steel, stainless steel and high-temp alloys. M3M Chipformer 11° 0.2 Double-sided insert for medium machining on stainless steel with a reinforced cutting edge that prevents notch wear at tight radii to increase tool life. VL Chipformer 3.3 16° 0.47 High positive rake and a special edge preparation used for rough and finish turning onhigh temperature alloys. Excellent performance on parts such as automotive valves. PP Chipformer Double-sided, very positive rake, sharp- and positive radial edge for heat- resistant alloys, stainless steel, aluminum alloys and soft, low carbon steel. A Chipformer 90° Flat inserts, used for short chipping materials such as cast iron. EM-M Chipformer 1.11 0.07 5˚ Double-sided sharp cutting edge with a 16º positive rake angle 16˚ for machining high temperature alloys at ap<3 mm. M3N Chipformer 24° Polished and extra sharp positive insert for machining aluminum and non-ferrous materials for medium applications. 12 Chipformer 21˚ 2.7 10˚ 0.08 Single-sided for medium to rough machining on aluminum and soft materials. R3P Chipformer 0.12 13.5° Chipbreaker for rough machining on steel with a positive rake angle and reinforced cutting edge for better performance and longer tool life. 130 ISCAR