Manufacturing And Production Technology
Lapping is an operation of

Sizing and finishing a small diameter hole
Smoothing and squaring the surface around a hole
Producing a hole by removing metal along the circumference of a hollow cutting tool
Making a cone-shaped enlargement of the end of a hole

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Manufacturing And Production Technology
The lip angle is the angle

Made by the face of the tool and the plane parallel to the base of the cutting tool
Between the tool face and the ground end surface of flank
Between the face of the tool and a line tangent to the machined surface at the cutting point
None of the listed here

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