Troubleshooting for tip we ar Examples of trouble with cutting edge 4. Crater wear 2. Flaking 1. Chipping, fracture 5. Initial chipping 3. Flank wear Solution Problem Cause Grade Cutting conditions / other Chipping, fracture - Excessive vibration or impact - Use a tough grade - Reduce the feed rate - Torn away built-up edge - Eliminate the vibration Flaking - Excessive vibration or impact - Use a tough grade - Reduce the feed rate - Eliminate the vibration Flank wear - Cutting speed too high - Use a grade with high wear - Reduce the cutting speed - Inadequate tool toughness resistance - Reduce the feed rate - Use a coated grade - Use coolant properly Crater wear - Cutting speed too high - Use a grade with high wear - Reduce the cutting speed - Feed rate too high resistance - Reduce the feed rate - Inadequate tool toughness - Use a coated grade - Use coolant properly Initial chipping - Inappropriate guide bush or - Use a tough grade - Adjust or change the guide pilot hole bushing or pilot hole - Misalignment - Reduce the feed rate - Correct the misalignment Tungaloy 25