How to sharpen chain of chainsaw

The filing method of saw chain is as follows: 1. When using a file as a chain saw, the filing speed should not be too fast, and the force should not be too great, so as to avoid tooth explosion (broken edge) of the file. 2. When filing the chain cutter head, you only need to file it for 3 ~ 6 times to sharpen the chain cutter head. Too many times of filing will make the chain cutter head curl and reduce the service life of the file and cutter head. 3. When filing the chain cutter head, after filing for more than ten times, use the file to knock other metals several times to shake off the debris in the file teeth, and then it can be used normally. 4. The file should be kept away from moisture, oil or other dirt, so as not to rust or slip, and should not be stacked with other hard objects, so as not to damage the surface file teeth and affect the filing effect. 5. Choosing a file with ergonomic handle can make filing easier and more effective, and reduce the risk of injury.