Boride Aluminum Oxide Dressing Stone

Boride Aluminum Oxide Dressing Stone is a maintenance stone for cleaning, refreshing, flattening, and resurfacing sharpening stones in 6" x 1" Edge Pro form factor. It uses White Aluminum Oxide abrasive with Boride vitrified bonds F9 and G9.

It provides controlled resurfacing and routine maintenance with lower risk of excessively roughening the stone surface. Compared to Silicon Carbide versions, it works more gently and leaves a smoother refreshed surface.

Boride classifies F9 as “Soft” and G9 as “Medium”, though practical differences between the two bonds are relatively small in knife sharpening applications.

Available grits: F150, F220, F320.

How to Choose Boride Dressing Stones

Boride Dressing Stones are available in several variants. The guidelines below are intended to help you choose the right dressing stone for cleaning, refreshing, flattening, and resurfacing sharpening stones in 6" x 1" Edge Pro form factor.

Aluminum Oxide Dressing Stone is the recommended starting point for most applications. It provides controlled resurfacing and routine maintenance with lower risk of excessively roughening the stone surface.

F150 is the recommended default grit. If the dressing stone leaves excessive scratches or too aggressive surface texture, switch to a finer grit.

If Aluminum Oxide Dressing Stone does not effectively reopen or clean the target stone, switch to Silicon Carbide Soft Dressing Stone for more aggressive and slurry-rich resurfacing.

If Silicon Carbide Soft Dressing Stone wears too quickly without effectively resurfacing the target stone, use Silicon Carbide Hard Dressing Stone.

Silicon Carbide Hard Dressing Stone is also recommended for restoring flatness and working surface of other dressing stones.

How to Use Boride Dressing Stones

Boride Dressing Stones are not sharpening stones and should not be used for sharpening knives or tools.

Running water is the preferred operating condition. Dry usage should be avoided. Oil should not be used.

If the target sharpening stone requires soaking before knife sharpening, it should also be soaked for the same amount of time before dressing.

Excessive pressure should be avoided at all cost. Dressing Stones work through abrasive interaction and surface refreshing, not through force.

Boride Dressing Stones should not be used with ultra-fine natural stones, saturated oilstones, electroplated diamond or CBN plates, extra-coarse diamond or CBN stones, or sintered ceramic sharpening stones.

Standard Boride dressing sticks are supplied unmarked from factory. Gritomatic adds permanent laser engraving for convenient identification of abrasive type, bond, and grit.