I have been sharpening broadheads today and had a break through that I should have thought of years ago. I have been doing the normal filing, then diamond stone, then fine ceramic that I have been doing for years, it works, but is quite a bit of work. Then I thought why don't I put a convex edge on them like I do my knives? So I broke out the leather strop and sandpaper and JEEZ, I have some black diamonds that I can lather up and shave with. I think my files and stones are not gonna see much use from now own. Wish I had a decent camera so I could show off these edges. Chris