Stainless steel is well scraped, good shapability. However, wear of the grinding stone per se is large. As a grinding stone, we wanted abrasive grains of alumina single crystal and those of the same size.
Stainless steel is well abraded and good shape-shaping, but SG grinding stone itself is scraped and abrasion is high. If you have an alumina single crystal of the same size, I would like to try it as well.