Possible causes:
- Too many sharpenings
- Inadequate blade tension
- Incorrect guide block adjustment
- Poor blade tracking
- Feed rate too fast
Solutions:
- Replace the blade (p. 38)
- Blade rubbing between guide blocks when too loose — tighten blade (p. 38)
- Adjust guide block gap (p. 36)
- Adjust tracking (p. 30)
- Slow feed rate