BSorby TurnMaster Mushroom Titanium Nitride Replacement Cutter ReviewbP PP Sorby TurnMaster Mushroom Titanium Nitride Replacement Cutter PTitanium nitride has been plasma bonded onto quality HSS cuttersPProvides prolonged cutting life close to that of carbidePCan be sharpened with traditional equipment used for HSSPAll cutters are interchangeableP