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 chips are disposed off easily and do not interfere with the cutting.
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.

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Manufacturing And Production Technology
Glazing in grinding wheels takes place when the

Wheel is too soft and wheel revolves at a very high speed
Wheel is too soft or wheel revolves at a very slow speed
Wheel is too hard and wheel revolves at very slow speed
Wheel is too hard or wheel revolves at a very high speed

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