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

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Manufacturing And Production Technology
The snag grinding is done

To produce good surface finish and high degree of accuracy
To remove considerable amount of metal without regard to accuracy of the finished surface
To grind exterior cylindrical surfaces
Any one of the above

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