Mikawa Nagura 1759g It is relatively friable and

It is relatively friable and fast cutting

Consider soaking the stone prior to use

Useful for hand sanding hard or wear resistant steels

Consider using a diamond plate to slurry the stone

Although we have made a good effort to provide a flat surface for usage

Mikawa Nagura 1759g It is relatively friable andMikawa Nagura are Tuff stones, a type of igneous rock formed from lithified volcanic ash. Mined in Aichi prefecture starting 700 years ago, they have been used in traditional Japanese sword polishing progressions. The mine has been closed since the 1970s. We receive the stones from the wholesaler with rough chisel marks on both sides, and flatten them in our workshop. Although we have made a good effort to provide a flat surface for usage, we strongly