Thread: What Do You Think About The Shapton 30K

Originally Posted by Steve56

Just a comment on grit scales - again - the Suehiro G20k is 0.5 microns, the Shapton 30k is 0.49 microns ... I'd go for the Suehiro. The Norton 8k is about 4.5k on the JIS scale Naniwa uses.

But Jimmy and others bring up a point I've discussed with Alex Gilmore before, the smoothest edges seem to come from stones that are not the ultimate in fineness, ie the Thuringian and coticule come to mind, in the JNat lineup, many people prefer the edge off a kiita versus a finer, harder asagi, me included. It's an interesting topic.

Cheers, Steve

Isn't .49 microns and .5 microns essential the same particle size.