The BladeForums.com 2024 Traditional Knife is available! Price is $250 ea (shipped within CONUS).
Order here: https://www.bladeforums.com/help/2024-traditional/
Yes, the green is certainly 4-6.Maybe closer to 4-5.Atleast according to the chart posted in sword sharpening.DM
green chromium oxide can be had in 0.5 micron size. Aluminum oxide will cut hardened steel, Norton India stones are aluminum oxide, sapphire is aluminum oxide. Linde powder - A=0.3 B=0.05 C=1.0 micron
Stitchawl-
Ever see a bronze bearing eat into a steel shaft?
The stones for the pyramids were cut with COPPER saws.