For optimal performance and safety, users should always replace all blades and screws together as a complete set, rather than replacing individual parts or reusing old screws.
Ensures Operating Balance: As blades wear down, they lose weight unevenly. Mixing new blades with worn ones creates an imbalance on the blade disc, which can lead to reduced cutting performance, severe machine vibration, unusual rotating noise, and extra wear on the motor.
Prevents Safety Risks: Reusing old screws is unsafe. Over time, used screws and their thread-locking coating wear down, increasing the risk of screws loosening during operation, which allows blades to fly off and poses a serious safety hazard.
By replacing the entire set of blades and screws every time, you ensure proper machine balance, smooth operation, and maximum safety.