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Dapra’s Toroid Rhino-Carb CNC pressed insert line is available with the Neutral (“N”) geometry for round and octagonal inserts. According to the company, the cutting edge geometry provides smoother cutting action for steels, irons and stainless steels compared to the company’s stronger T-Land insert edge. Neutral inserts also offer a higher positive edge preparation and rake angle than their T-Land counterparts. This creates less heat and pressure, while also offering greater strength than the very high-positive dished cutting edge.
Other Toroid Rhino-Carb cutting edge options include the T-Land and Dished geometries. T-Land (“T”) inserts feature the strongest cutting edge and should be used for the heaviest cuts or where vibration or chatter could cause edge damage. This geometry is suitable for steels, irons and 400-series stainless. Dished (“D”) inserts are suitable for applications in which low tool pressure and higher shear are required. This geometry is suited for most stainless steels and high-temperature alloys, but it is also a free-cutting performer in softer steels, the company says.