Walter says its new FM5 finishing and RM5 roughing indexable insert geometries deliver optimal cooling, longer tool life, and increased productivity in high-temperature alloy and stainless-steel machining. The new inserts owe their effectiveness, in part, to their "jet guiding geometry," or targeted cooling. Because of special channels pressed in the rake face, the coolant reaches the cutting edge directly, underneath the chip. This targeted cooling maximizes the cooling effect and increases tool life. Chipbreaking, too, is optimized. This results in increased productivity and improved workpiece surfaces.

These new indexable inserts feature Walter's Tiger·tec Silver coating with PVD Al₂O₃ heat shield for maximum tool life. Specifically, three grades feature PVD Al₂O₃ (WSM10S, WSM20S, WSM30S) and one features CVD (WMP20S).

The design of the cutting edges is also new: Their double positive macro-geometry reduces notch formation and crater wear. Both the RM5 and FM5 geometries achieve their best results in Walter toolholders with integrated precision cooling, as they were designed specifically for these coolant channel geometries. These inserts, with jet guiding geometry can also be used with standard ISO turning toolholders.