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Tool wear location: where does crater wear develop? Identify the surface/region of a single-point cutting tool on which crater wear primarily forms during metal cutting. Choose the correct option.

Difficulty: Easy

Nose, front relief face, and side relief face
On the rake face at a short distance from the cutting edge only
Cutting edge only
Front face only (at the very edge)

Correct Answer: On the rake face at a short distance from the cutting edge only

Explanation:

Concept
Crater wear develops on the rake face due to chip flow, adhesion/diffusion, and high sliding temperature—typically forming a crater some distance from the cutting edge where the chip contacts the face most intensely.

Final Answer
On the rake face at a short distance from the cutting edge only

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