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Damaged Thread
- Use proper reversing speed to avoid
damaging tapped thread on the way out of the hole.
Incorrect Tap
- Use oversize taps:
- Use for cutting materials such as copper alloy, aluminum alloy,
and cast iron.
- Use for cutting tubing which will have "spring back" action
after tapping.
- Apply proper chamfer angle.
- Increase cutting angle.
Left-over Chips
- Increase cutting performance to avoid any left over chips in the
hole.
- Remove left over chips from the hole for gage checking.
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