When should you use a coarse pitch, and when should you use a fine pitch?
Roughing end mills with sinusoidal waveform are designed to reduce side pressure and cut the chips into much smaller segments.
This reduces chatter, vibration, and deflection, allowing much higher material removal rates without increasing horsepower requirements.
Coarse pitch profiles are recommended for deep slotting and heavy side cuts in medium strength materials where heavy metal removal rates are required.
Fine pitch profiles provide a stronger edge, better tool life, and better surface finish.
These work well for shallower cuts in harder steels, and high temperature materials like inconel and hastalloy.
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