1060 – 10 – How Shear Plane Angle Can Affect Your Cut

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Every metal cutting process, like sawing, produces chips. Whenever the saw digs into the material, it shears the metal producing long, curling, chips that fill the gullets.

The angle at which the chip shears off a workpiece is the shear plane angle. Low shear plane angle makes thick chips and cutting efficiency is decreased as the tooth is more up and down. This plows the material as opposed to curling it. High shear plane angles turn out thinner chips and better efficiency as the tooth leans back so the chip may curl.

Shear plane angle is the most essential factor when it comes to achieving highest efficiency. It is influenced by three essential factors: speed, feed, and blade design.