Support BladeForums! Paid memberships don't see ads! As I understand it, S90V needs a toothy edge in order to get the benefits of long lasting edge that the steel is capable of. I have all diamond stones in grits of a credit card sized 350 ish and 600 on the other side, a heavy double sided stone of 600/1000 and a little blue EZE-LAP super fine (1200 grit?) stone but it's really small and practically all plastic handle and a tiny bit of diamond in comparison. Then I have a basic leather strop with no compound. For a toothy, long lasting, effective edge, what kind of grit should I be using? What would you consider the minimum or maximum grit for a toothy edge for this? What are the pros and cons of choosing a lower grit or the effective maximum grit?