Thanks for your comments. This is interesting stuff.
I used to be pretty good at getting a very sharp edge on a knife, but got away from being so picky for a while. Now, with broadheads, I’m getting the knack again, with file, stone and strop. It takes a little patience, but it’s worth it. This is with a straight edge Eskimo. I think I’d need a bit more practice with a radius edge, but they sure do look nice.