Mikawa Nagura 2030g with corresponding reduction in resistance

with corresponding reduction in resistance to wear

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

The diamond layer is 10mm thick after firing

This particular one is harder than average

Can be mixed with alcohol to create a diamond spray for stropping

Mikawa Nagura 2030g with corresponding reduction in resistanceMikawa 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