Manufacturing And Production Technology
Lapping is an operation of

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

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Manufacturing And Production Technology
The facing is an operation of

Machining the ends of a workpiece to produce a flat surface square with the axis
Reducing the diameter of a workpiece over a very narrow surface
Beveling the extreme end of a workpiece
Embossing a diamond shaped pattern on the surface of a workpiece

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