Manufacturing And Production Technology
For generating a Coon’s surface we require

A set of grid control points
Two bounding curves and a set of grid control points
Four bounding curves defining the surface
A set of grid points on the surface

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

It can not be used on old machines due to backlash between the feed screw of the table and the nut.
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.

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