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It burnishes out grains in the steel nicely
This is a novelty product
a type of igneous rock formed from lithified volcanic ash
This particular stone is middle of the road in terms of hardness and friability
Dimensions: 205mm x 74mm x 40mm
Mikawa Nagura 978g It burnishes out grains inMikawa 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