I have a few staves that are clean and knot free that have super thin rings. I mean soooper thin probabaly around 1/32. I chased a ring on one of them believe it or not. When I got done I inspected the back and noticed that in a couple of the dips on the back I had violated in a couple of small spots. So now I am thinking it might be better if I just back it with something. What is a good, common source for rawhide? Danny