Nagura Stone
A soft, man-made chalk stone. Rub on the ceramic toishi (water stones) along with water to create a lubricating paste that improves sharpening action and gives a high polish to the blade.
A soft, man-made chalk stone. Rub on the ceramic toishi (water stones) along with water to create a lubricating paste that improves sharpening action and gives a high polish to the blade.