Tsushima Whetstone producing sharpening Whetstone Repair Tool (for water) -

Uses: When sharpening before use, use it to remove sharpening fluid or to make the knife slightly flat. Material: Sea stone mined from the sea Features: Used for sharpening before use, to remove sharpening fluid, and to create a slightly flat surface. 45 x 45 x 45mm, approximately 270g (may vary) Although fewer people are using natural whetstones, they are still essential for sharpening before use, and are used to remove whetstone fluid and to smooth out small surfaces. Mining ceased around 1982, making Tsushima whetstones a valuable natural whetstone. They are mined from the seabed of Aso Bay in Saga, Toyotama Town, Shimogata County, Nagasaki Prefecture, and are desalted for 2.3 to 4.5 years before being shipped. Because they come up from the sea, they dry out easily on land, losing moisture and frequently developing cracks and fractures. With no more mining, Tsushima whetstones in good condition are becoming scarce. This is due to the difficulty of preserving them, making them expensive and one of the rarest natural whetstones. They are a finishing whetstone similar to a medium whetstone. They are primarily used for scissors. They are also used for polishing the surface of natural whetstones, polishing silverware, and polishing lacquerware.