Quote Originally Posted by 0livia View Post
Duh, reminds me to work on that table.

Norton 4000 = F800 or JIS(new) 2000
Norton 8000 = F1200 or JIS(new) 4000
Olivia, that might be true, but if it is then I should be able to get a good shave off my King 4k stone...and I can't. It also means that the Naniwa 8K is a very high grit finisher...and it isn't.

Norton PROBABLY uses the same system as the Japanese waterstone manufacturers, as far as my research goes.