Troubleshooting
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Vibration marks when countersinking - what to do?
Causes and fixes: 1. Excessive overhang - shorten it; 2. Speed too high - reduce; 3. Feed too fast - reduce; 4. Worn tool - replace or regrind; 5. Poor workpiece rigidity - add support. Lihao Technology's 3-flute countersinks offer better vibration resistance.
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