Steve, just remove the rind. I also smoothed down the ridges. James said there is no need to rough it up. Just size it a few times, I'm doing it 4 times. And then lay the sinew on like you would normally do. , I'm using real hide glue and not Knox. This is basicly a modified Horn Bow, now. I'm going to cover it with a 5' Bull snake skin I got from Nate when I'm through.