A saw chain needs grinding. But it is the user to decide, whether he wants to maintain the saw chain or buy a new one. A saw chain is a part of a tree saw. And this part has to be replaced, if it becomes dull and useless. But the users have an opportunity to maintain their saw chains in good condition.
Clean your saw chain after using the saw and check its cutters or teeth to determine its cutting strength. You would need checking all the cutters one by one and you have to do this job manually. Access the saw chain in the guide bar and check its teeth one by one. If you find chipped, broken or bent teeth, you should at once take out the chain from the guide bar and grind the damaged cutters. It is called the process of chainsaw sharpening.
Buy a grinder for chainsaw sharpening. Buy an electric file for grinding your saw chain. An electric file contains a chain feeder and a grinder. The chain feeder locks the chain and its teeth so that the teeth could be grinded in a hassle free manner. Once the chain is locked, you can easily handle the grinder that you need lowering on the cutters.