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

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.
The surface milled appears to be slightly wavy.

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Manufacturing And Production Technology
Jigs are used

For holding the work in milling, grinding, planing or turning operations
None of these
To check the accuracy of workpiece
For holding and guiding the tool in drilling, reaming or tapping operations

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