Chamfer Too Short
- Increase chamfer length.
Chip Packing
- Use spiral pointed or spiral fluted taps.
- Use larger drill size.
Galling
- Use thread relieved taps.
- Reduce land width.
- Apply surface treatment such as steam oxide or TiN.
- Use proper cutting lubricant.
- Reduce tapping speed.
- Use larger hole size.
- Obtain proper alignment between tap and work.
Wrong Cutting Angle
- Apply proper cutting angle.
