Milling cutters

Cracks caused by overheating

Reduce feed per tooth [fz]
Increase cutting speed [Vc]

Chipping of the cutting edge

Reduce feed per tooth [fz]
Reduce depth of cut [Ap]
Check source stiffness and workpiece clamping
Switch to sequential milling
Try blowing or coolant
Switch to dry machining when machining with cooling
Check tool runout

Breaking the cutter

Reduce feed per tooth [fz]
Increase cutting speed [Vc]
Decrease depth of cut [Ap]
Decrease cutting width [Ae]
Improve chip evacuation by cooling or air
Use a less-toothed cutter for chip packing

Wear on the angle of the spine

Increase feed per tooth [fz]
Reduce cutting speed [Vc]
Use a tool with a larger helix angle [λ]
Use coated cutter
Switch to sequential milling
Switch to water insoluble coolant

Increment on the blade

Increase feed per tooth [fz]
Increase cutting speed [Vc]
Use a tool with a larger helix angle [λ]
Optimize coolant flow
Check coolant emulsion percentages

Inadequate noise

Adjust workpiece clamping
Switch to sequential milling
Change tool with different geometry
Reduce the amount of material removal [Q]

Vibration/quiver

Increase feed per tooth [fz]
Decrease cutting speed [Vc]
Use a tool with a larger helix angle [λ]
Use a cutter with a larger diameter [D]
Use multi-tooth cutter [Z]
Check the stiffness of the source and workpiece clamping

Deflection

Increase feed per tooth [fz]
Decrease depth of cut [Ap]
Use a tool with a larger helix angle [λ]
Use a cutter with a larger diameter [D]
Use a multi-tooth cutter [Z]
Switch to water insoluble coolant
Switch to sequential milling

Poor quality of machined surface

Increase cutting speed [Vc]
Decrease depth of cut [Ap]
Use a tool with a larger helix angle [λ]
Use a multi-tooth cutter [Z]
Reduce runout
Check machine rigidity
Increase air or cutting fluid volume
Switch to wet cutting

Ripple

Reduce depth of cut [Ap]
Use a tool with a smaller helix angle [λ]
Check tool runout
Check the stiffness of the source and workpiece clamping

Poor chip evacuation

Reduce feed per tooth [fz]
Increase cutting speed [Vc]
Decrease depth of cut [Ap]
Use a less toothed cutter [Z]
Use blowing
Increase the volume of air or cutting fluid

Creating burrs and breaking the workpiece

Reduce feed per tooth [fz]
Reduce depth of cut [Ap]
Use a tool with a smaller helix angle [λ]