Science and Technology · Trade Theory
Before drilling a hole on a metal surface, a center punch is used mainly to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Increase drill speed
- 2Prevent drill slipping from the marked point✓
- 3Reduce drill diameter
- 4Improve surface finish
Correct answer
Prevent drill slipping from the marked point
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