TopGroove™ Choosing the Correct TopGroove Cutter 5 Select grade: Recommended Grades stainless non-ferrous high-temp hardened cutting condition steel steel cast iron metals alloys materials smooth cut, pre-turned surface TN7110 TN6010 TN7110 TN6010/THM TN6010 TN6010 varying depth of cut, casting, or forging skin TN6010 TN6010 TN6010 TN6010/THM TN6010 TN6010 lightly interrupted cut TN6025 TN6025 TN6025 TN6010/THM TN6010 TN6025 heavily interrupted cut TN6025 TN6025 TN6025 TN6010/THM TN6010 TN6025 See page E47 for Grades and Grade Descriptions. 6 Determine cutting data: A Based on material group and grade, identify starting speed (vc). B First choice starting speed is in bold. See page E50 for cutting data. A B widia.com E45