The only chainsaw sharpening tool you'll need is STIHL's 2-in-1 flat filing gauge. Chainsaw files make sharpening angles 100x easier. Note that there are multiple file diameters.

If you want to speed up the process of maintaining your cutter and depth gauge, brands like Stihl make a 2-in-1 Filing Guide that file down both at the same time. How to Sharpen a Chainsaw ...

If you want to speed up the process of maintaining your cutter and depth gauge, brands like Stihl make a 2-in-1 Filing Guide that file down both at the same time. How to Sharpen a Chainsaw ...

To maintain the proportion between the two and preserve your chainsaw’s wood-chewing power, you need to file down the depth gauge occasionally to match the shortened cutter.