Workpiece surface Small tools Introduction  2 Excellent surface finish by preventing chip biting and clogging Surface finish comparison TKFB GQ chipbreaker Competitor B (Ground chipbreaker) Facing External Facing External E Excellent surface 3.8 μmRz Chip biting 7.6 μmRz 2.9 μmRz 31.2 μmRz Cutting conditions : Vc: 100 m/min, ap = 3.0 mm, f = 0.02 mm/rev (Grooving), 0.05 mm/rev (External), workpiece material : C45, wet GQ chipbreaker realizes excellent surface finish with single pass. Suitable for cycle time reduction. E11