File

• A file requires a bit of skill and understanding, but it can do a great job sharpening a chainsaw. It must be an adequately hard, fine and sharp file to cut steel chainsaw blades. It must also have the correct curve and diameter. Sometimes, round chainsaw files are held in hacksaw-like blades.
  
  

Stump Vice

• A stump vice is a great tool for field-sharpening. The vice has a "C" shape that clamps the chainsaw's bar in place. The vice has two spikes on its bottom. It is designed to have the spikes driven into a cut stump, given you a secure place to sharpen your blade, even if you're out in the woods.
  
  

Bar-Mounted Hand Sharpener/File-Guide

• Bar-mounted sharpeners are mechanical guides for sharpening files. They mount to the chainsaw's bar. They are set up so the file matches the pitch of the cutting tooth. Once set up and tightened in place, the file cannot veer from the correct pitch, ensuring consistent sharpening.
  
  

Bench-Mount Chain Sharpener

• Bench-mounted sharpeners have electric motors. Their design is somewhat like a miter saw. Each has a motorized sharpening wheel mounted on an armature. The saw is clamped in place to line up the cutting wheel in the correct angle to the pitch of the cutters. The sharpener can then quickly sharpen each cutter; reverse the setup for the opposite-sided cutters, then sharpen those cutters.