Tuffite sharpening stones are used for finish sharpening knives on Edge Pro sharpener. Tuffite stone is natural abrasive material of high density. Tuffite stones have approximately 6 mm thickness and mounted on high quality aluminum blanks with laser engraving.
Tuffite stone is mined in the Baikal region of Russia. Tuffite is a tuff containing predominantly pyroclastic materials. It consists of different-sized quartz crystal grains (average 50 micron) cemented by cryptocrystalline quartz-chalcedony.
Tuffite sharpening stones can be used dry or with oleic oil as lubricant.
Tuffite stones stones do not have any minor defects. Tuffite stones always have a black and grey pattern; this is not a defect.
Tuffite stone does not require any preparations. It is naturally lapped.
Grit terminology is not applicable to natural sharpening stones, including Tuffite. The behavior of a natural stone depends on its density and how good it was lapped.