How to Sharpen a Chainsaw Chain

Being able to properly use a chainsaw can make wood cutting tasks very efficient, and when done correctly can be very safe. However, if the teeth on the chainsaw chain become dull, the saw will not cut correctly or efficiency, and could become dangerous due to the chainsaw kicking back towards the operator. A sharp chain is often safer than a dull one, nonetheless, every chainsaw and chain must be handled carefully as it can easily hurt you if mishandled.

A chain needs to be sharpened if the shavings cut from the chainsaw become very fine, and almost dust like, or if the saw does not cut straight. The pile of shavings on the left is from a sharp chain, where as the more dust like pieces on the right are cut from a dull saw.

Make sure to not press the chain in the vice, as it needs to be able to move freely on the bar.

The best way to hold the file is hold firmly with 1 hand on the handle, and the other hand lightly resting on the other end of the file.

On each cutting tooth there is a small line on the top of the tooth that is parallel to the cutting edge. It is crucial that you hold the file parallel to the marks in order to create a sharp cutting edge.

It is important to apply pressure on both the back of the tooth and towards the top of the tooth because that is the part that is in cutting contact with the wood.

Make sure to maintain a constant pressure and speed on the file and keep it parallel to the line that is on each tooth. Repeat this process 2-3 times per tooth.

By sharpening every other tooth, you will sharpen all of the teeth facing one way, then once one side has been sharpened, go back through and sharpen the teeth facing the other direction. This will ensure that the same sharpening orientation was used on each tooth.

It is important to inspect each tooth in order to make sure that each one is sharp, and consistent. By being able to see a shiny part on the cutting edge,and no shine on the top of the tooth will ensure that it has been sharpened.