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From top: Japanese water stones and Nagura slurry stone STWT, STWT10, STWT4, STWTAK and STWTAKS
Our Japanese water stones are available in 800, 1000, 4000 and 8000 grits.
800 grit stone (coarse), STWT Used where rapid removal of metal is desired or for removing large nicks.
1000 grit stone, STWT10 Used when your tool is in good shape but needs final sharpening.
4000 grit stone, STWT4 Use to maintain a sharp edge on your tools.
8000 grit stone, STWTAK Made of synthetic #8000-grit abrasive and naturally occurring clays, this stone has outstanding polishing capabilities! Brian Burns raves about how "aggressive it is, while producing a mirror finish, leaving no burr...the cutting edge you get will literally take shavings off a hair."
Nagura Slurry Stones Nagura stones are can be used to create a slurry on a fine natural sharpening stone. They are not recommended for use on coarse stones. The theory is that a small amount of slurry prevents the blade edge being sharpened from slipping over the sharpening stone. Nagura stones are typically used toward the end of the sharpening process when finer grit stones are being used. Nagura stones are also used as a cleaning stone after flattening a fine natural or man-made stone with a courser stone. It can smooth the surface of a flattened stone allowing better contact with the surface being sharpened.
Natural water stones should be flattened regularly, ideally each time you use them. Before use, soak the stone for a short period of time in a water bucket then flatten using one of several tried and true methods like sandpaper on a piece of glass, or a flattening stone. You can even use a coarser stone that has been flattened to flatten a finer stone.
Oil or other mineral spirits will destroy the sharpening ability of water stones.