Filing of saw chains

The left and right cutting teeth on the saw chain are cutting tools. After a period of use, the cutting edge will become blunt. In order to cut smoothly and keep the cutting edge sharp, it is necessary to file.

Notes for repairing files:

1. Choose a round file suitable for repairing saw chains. The cutting teeth, sizes and arcs of various types of saw chains are different. The standard of the round file required by each type of chain is certain. There are detailed introductions in the manual, please pay attention to it.

2. Pay attention to the direction and angle of the filing. The filing should be forwarded along the direction of the cutting edge. When pulling it back, it should be light. Try not to use force back and forth. The included angle is about 10 degrees. These angles vary according to the hardness of the material being sawed and the usage habits of the saw hand. At the same time, pay attention to the symmetry of the left and right cutting teeth. If the deviation is too large, the sawing will deviate and the sawing will be skewed.

3. Pay attention to the height of the limit teeth. Each cutting tooth has a protruding part in front, which is the limit tooth, which is 0.6-0.8 mm lower than the top of the cutting edge. The cutting amount of each tooth is so thick each time. When filing the cutting edge, pay attention to its height , If the cutting edge is trimmed more, the limit tooth will become higher relative to the cutting edge, and the cutting amount will become smaller each time, which will affect the cutting speed. If the cutting edge is lower than the limit tooth, it will produce no wood , cannot be cut, the limit tooth trimming is too low, and each tooth is too thick for each cut, which is likely to cause "knife" and the sawing does not move.