Manufacturing And Production Technology
Lapping is an operation of

Sizing and finishing a small diameter 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
Smoothing and squaring the surface around a hole

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Manufacturing And Production Technology
The grooving is an operation of

Reducing the diameter of a workpiece over a very narrow surface
Beveling the extreme end of a workpiece
Enlarging the end of a hole cylindrically
Embossing a diamond shaped pattern on the surface of a workpiece

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