Manufacturing And Production Technology
Which of the following statement is wrong as regard to down milling?

The surface milled appears to be slightly wavy.
The coolant can be poured directly at the cutting zone where the cutting force is maximum.
It can not be used on old machines due to backlash between the feed screw of the table and the nut.
The chips are disposed off easily and do not interfere with the cutting.

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Manufacturing And Production Technology
The chamfering is an operation of

Enlarging the end of a hole cylindrically
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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