This stone grader is included with the Tormek T-7 and T-8 sharpening machines.
Grinding on a 220x stone, followed by stropping on a charged leather wheel, creates a toothed edge suitable for shears, cutlery, axes or utility chisels. Where a refined edge is needed, the grindstone is transformed with use of the stone grader to a fine-texture honing wheel comparable to 1000x.
Applied to the face of the grindstone for about 30 seconds, the stone grader lightly glazes the surface to reduce its aggressiveness. Simply treat the wheel with the coarse side of the grader to restore the original coarse grit. You can switch between grits as often as needed, without appreciable wheel wear.