This type of cutter may be used for the production of external gears where it is impracticable to use a normal external disc cutter. (Because of a lack of space between the external teeth of the component and some protrusion in the component) Often a shank type cutter is used to perform the task, though this may have to be of a very small diameter and with very few teeth. The internal cutter is fully generated to give excellent tool life and much higher rates of productivity compared to a small shank.
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