Tsushima Whetstones are used for fine sharpening on Hapstone or Edge Pro sharpeners. Tsushima is natural stone with estimated grit approximately 5000 JIS. Tsushima stones are mounted on high-quality aluminum blanks.
Tsushima (対馬) Whetstone is mined on Tsushima Island off the coast of Nagasaki Prefecture in Japan.
Tsushima is preliminarily lapped and does not require lapping after purchase. Tsushima should be used with water as a lubricant. All that is required is to wet the stone surface. There is no need to immerse the stone. During the sharpening, the slurry is released from the stone surface. Try to keep slurry on the stone surface.