I've used scary-sharp method for years. I put half-sheets of wet-dry Si02 paper on 1/2" plate glass.
BUT, I can't find 800-grit paper (ANSI system, NOT FEMA; i.e. no "P" in front of the grit number). So I got a gap between 600- and
1000-grit.Anybody have a source of 800-grit ANSI Si02 wet-dry sandpaper?
-Zz "Zz Yzx" rhymes with "physics"; or " Isaacs" if you prefer.