Ball centre is sometimes used for tapering by the "set-over tail stock" method. The standard centres cannot sit squarely in the center hole when the tail stock is set over.
26) Why the ball centre is preferred in tail stock offset method?
Answer is:
To avoid damage to the centre drilled hole of the job
Explanation:
Related Taper Turning MCQ with Answers
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Form tool method
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8 mm
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