The second stone of the groundwork. Binsui-do removes the marks left by Kongo-do or Ara-to. It is important at this stage to establish the shape of the blade, because the blade will not change its shape with the later, finer stones. By the end of the Binsui stage the outline of Hamon becomes visible. Dimensions : 21 x 6 x 7cm. Weight : 2.2kg