Manufacturing And Production Technology
The lip angle is the angle

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

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Manufacturing And Production Technology
Threading is an operation of

Cutting helical grooves on the external cylindrical surface
Sizing and finishing a small diameter hole
Producing a hole by removing metal along the circumference of a hollow cutting tool
Smoothing and squaring the surface around a hole

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