Manufacturing And Production Technology
Crater wear occurs mainly on the

Nose part, front relief face and side relief face of the cutting tool
Cutting edge only
Front face only
Face of the cutting tool at a short distance from the cutting edge only

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Manufacturing And Production Technology
Trepanning is an operation of

Producing a hole by removing metal along the circumference of a hollow cutting tool
Making a cone-shaped enlargement of the end of a hole
Smoothing and squaring the surface around a hole
Sizing and finishing a small diameter hole

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Manufacturing And Production Technology
In a shaper, the length of stroke is increased by

Decreasing the centre distance of bull gear and crank pin
Increasing the length of the arm
Decreasing the length of the slot in the slotted lever
Increasing the centre distance of bull gear and crank pin

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