Description of problem:
The fracture originates in the gullet and immediately travels in an angular direction into the backing of band.

Likely causes:

  1. An excessive twist type of stress existed.
  2. Guide arms spread to capacity causing excessive twist from band wheel to guides.
  3. Guide arms spread too wide while cutting small cross sections.
  4. Excessive back-up guide “preload”.
Body Breaking Fracture Traveling In An Angular Direction