| Grit | Used for | Notes |
|---|---|---|
| Coarse | Flattening backs, regrinding a damaged edge | Dishes quickly. Needs flattening itself more often than the others put together. |
| Medium | Most of the work | If I owned one stone it would be this one. |
| Fine | The last dozen passes | Makes a visible difference on end grain and almost none elsewhere. |
A sheet of wet-and-dry on a scrap of plate glass, pencil grid on the stone, rub until the grid is gone. Five minutes, and I put it off for months because it sounded tedious. The stones cut noticeably better afterwards and I now do it before every session with the coarse one.