1. The working blade shaft of woodworking machinery has a high rotational speed and large inertia, making it difficult to brake. In order to stop the motor as soon as possible after it stops, the operator is often accustomed to using their hands or wooden sticks to brake, which often causes injury due to accidental contact between their hands and the rotating tool.

2. Woodworking machinery often uses manual feeding, which is a hidden cause of hand injuries. When pushing wood into place by hand, due to encountering knots, bends, or other defects, the hand may unconsciously come into contact with the cutting edge, causing injury.

3. Woodworking machinery has high rotational speed, coupled with uneven wood being processed, resulting in loud noise and vibration during the cutting process, high labor intensity for workers, and easy fatigue. These factors are all prone to causing operator errors and resulting in injuries.

4. If the operator is not familiar with the performance and safety operation techniques of woodworking machinery, or does not follow the safety operation procedures, and the woodworking machinery equipment is not equipped with safety protection devices or the safety protection devices fail, it is highly likely to cause injury accidents.