Instead of manually sharpening your chain saw build this chain saw electric sharpener tool, includes step-by-step instructions and detailed diagram.
The 12-volt sharpener can take to the field with the rest of your woodcutting tools because it's been designed to clamp to any convenient spot on your vehicle's bumper. The clip-on leads connect directly to each battery post.
PHOTO: MOTHER EARTH NEWS STAFF
Diagram: Details for the electric chain saw sharpener tool.