Product Description
Part Number and name: G721 Grind-n-Joint II
Used for/with: Sharpening cross cut saw chains.
Fits: Will hold all stone sizes to sharpen all standard chain pitches.
General description: The G721 Grind-n-Joint II is a fast, efficient, and lightweight 12-volt motorized chainsaw sharpener designed for accurate, on-the-job sharpening. Featuring a powerful 22,000 RPM motor with an internal cooling fan, this handheld sharpener delivers consistent performance without overheating.
A pressed steel guide plate provides stability and precision, while three sharpening angles — 25°, 30°, and 35° — are permanently stamped into the height plate for quick reference. The included EZ Gage™ allows you to easily set stone height and lower depth gauges with accuracy.
Built in the USA for strength, durability, and precision, the Grind-n-Joint II is an essential tool for keeping chains cutting clean and efficient.
How to Use: Use the stamped guide markings to select the correct sharpening angle for your chain. Set the stone height using the EZ Gage™, then sharpen cutters evenly. The EZ Gage™ also allows precise lowering of depth gauges for proper chain performance.
Country of Origin
🇺🇸 Made in the USA






David Ellis (verified owner) –
This grinder has been solidly reliable ! I like this motor / grinder much more than the belt drive version. Initially I worried about having imprecise tooth angles. I now believe some degree of hand / eye error doesn’t seem to matter. I am MUCH better and faster with this grinder than a hand file in all aspects.