Woodworking band saws have been used for a long time or due to operating habits,, the saw wheel will have a certain amount of wear. The slight wear will not affect the use. If the front edge of the saw wheel is severely worn, the tension of the saw blade will be reduced. When the saw blade rotates, the stability of the saw blade will be weakened, it’s difficult to cut straight . Then need to replace the new parts or re-turn the saw wheel to ensure the flatness of the saw wheel. Band saws are mainly used for longitudinal sectioning and board sectioning of logs. They can be sectioned into boards of various specifications. The ring-shaped endless saw blade is continuously rotated around two saw wheels to cut wood.