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TopGroove ™ Failure and Solution Guide Grooving Tool Failure and Solution Guide Practical Solutions to Common Grooving Problems Holder Position for Grooving Operation How to Cut a Groove Slightly Wider than the Groove Tool 1. Plunge the centre of the groove. 2. Plunge each side of the groove to get the specifi ed width. Use a slower feed rate when cutting groove sides. problem bur poor surface fi nish groove bottom that is not fl at solution 1. Ensure tool centre height. 2. Use sharp tool (index more often). 3. Use positive rake PVD-coated insert. 4. Use correct grade for workpiece material. 5. Use correct geometry (e.g., positive rake for work-hardening material). 6. Chamfer before grooving. 7. Change tool path. 1. Increase speed. 2. Use sharp tool (index more often). 3. Dwell tool in bottom 1–3 revoluti