1. Blade Wear and Mechanical Damage
- Over time, blades become dull, chipped, or bent from continuous use or hard impurities.
- A blunt or damaged blade fails to shear cleanly, causing jagged edges and incomplete cuts.
- Results in visible notch marks and uneven strap finishes.
2. Improper Blade Clearance and Alignment
- Excessive gap between upper and lower blades causes micro‑tearing and burr formation.
- Misaligned blade shaft or loose fixing screws compromise the cutting angle.
- Leads to crooked or uneven strap cuts.
3. Tension Fluctuations and Material Slippage
- Improperly calibrated tension control causes strap to become loose or over‑stretched.
- Inconsistent tension allows the strap to slip or shift during cutting.
- Results in slanted or uneven cut lines.
4. Excessive Cutting Speed and Overfeeding
- Excessive feed speed or thick/brittle strap puts undue stress on the cutting mechanism.
- Overfeeding causes tearing rather than shearing.
- Leads to rough, uneven edges and potential blade damage.
