very dull 320. Fresh 320 is no good and the higher grit stuff changes so fast it’s useless. I like a 320 belt that’s worked a hard wood like cocobolo and picked up a bit of burn. It makes a sharpening belt that I can use in just 1 pass on each side to get what I want.
The main difference I have noticed between a hollow grind and an angle is that the hollow dulls much faster.
