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Problem	Solution
Chipping of the Cutting Edge	Apply hone .0005" to .001" Try air blow or coolant Reduce depth of cut Check amount of wear on collet	Reduce feed per tooth If wet cutting, change to dry cutting Check tool runout Improve the stability of the work-holding
Extreme Flank Wear	Use coated end mill Increase feed per tooth If using water soluble cutting fluid, change to non-water soluble cutting fluid	Increase helix angle If conventional milling,
Vibration/Chattering	Use larger diameter end mill Increase feed per tooth Increase helix angle Reduce length of flutes or overhang	Reduce cutting speed Check or change the holder Increase number of flutes Tighten chuck or use stronger chuck
Deflection	Reduce depth of cut Use larger diamter end mill Increase feed per tooth Increaes helix angle If using water soluble citting fluid, change to non-water soluble sutting fluid	Reduce length of flutes or overhang If using 2-flute type, change to 4-flute type If climb milling, change to conventional milling
Poor Surface	Reduce end mill runout Increase cutting speed Reduce feed per tooth Use small hone .003" to .0006" Increase helix angle	Increase number of flutes Increase volume of air or cutting fluid Reduce depth of cut If dry cutting, change to wet cutting
Waviness	Reduce helix angle Check end mill runout	Reduce depth of cut Check or change the holder
End Mill Fracturing	Reduce depth of cut Reduce feed per tooth	Reduce length of flutes If chip jamming occurs, reduce the number of flutes
Poor Chip Disposal	Use air blow Reduce depth of cut Reduce feed per tooth	Reduce the number of flutes Increase volume of air or cutting fluid Increase cutting soeed
Burrin/Workpiece Chipping	Reduce helix angle Reduce feed per tooth	Reduce depth of cut
Chip Welding	Use coolant Use coated end mill	Increase colume of cutting fluid Increase helix angle