We recently purchased this Multitool belt grinding attachment from Trick-Tools.
This is a cool grinder attachment even without being driven by Tradesman. However, when we hooked it up to the world’s coolest variable speed bench grinder, it lifted this belt sander attachment into a whole new ball game.
In the pictures you see Jeff sharpening a knife blade at about 800 rpm. The 3M Trizact 217EA belt quickly removes material while the low rpm keeps the blade cool enough to work safely with bare fingers.
The Tradesman DC Bench Grinder features continuously variable speed from 400 to 4000 rpm.