Yes, several times, by a saw doctor with a diamond grinder — worth doing on a good blade with plenty of carbide left, and not worth the postage on a cheap one.
Carbide teeth are reground on a diamond wheel, and a blade can usually take several sharpenings before the tips run out of material.
What a saw doctor does
Grinds the face and the top of every tooth back to the original geometry. That restores the edge and keeps tooth heights and grinds consistent across the blade. Doing it by hand with a file does not work on carbide, and doing it inconsistently is worse than leaving the blade dull, because one high tooth then does all the cutting.
When it is worth it
On a good blade with plenty of carbide left, yes. Sharpening costs a fraction of replacement, and what you are keeping is a flat body, properly brazed tips and a plate that was tensioned at the factory.
On a cheap blade it rarely is. The tips are thin, the body may never have been flat, and the sharpening cost approaches the price of a new one.
What ends a blade
Carbide ground down until there is nothing left to shape. Missing or cracked tips. A warped or heat-damaged body, which no sharpening corrects.
Before you send it
Clean it. Pitch build-up behaves exactly like bluntness, and plenty of blades sent for sharpening only needed a resin solvent and a brass brush.
Last reviewed 2026-08-12