Mikawa Nagura 1165g Requires mounting onto a flat

Requires mounting onto a flat surface

For optimal performance

We have not noticed the release of any gritty particles in use

does not differentially absorb water

Mikawa Nagura 1165g Requires mounting onto a flatMikawa 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