I used to get it from Crazy Crow Trading Post. I use only deer rawhide, and Crazy Crow is a tad expensive, but was good stuff. I buy it at Rendevous' now at about $25.oo, to $35.oo, depending on who I get it from. It needs to be wet to work well, and as I go along, I have to lay it between wet rags every now and then, to keep it wet. The deer rawhide is very thin and works and forms really well, but occasionally there will be a weak spot, and it may tear, but usually this is no problem when doing the types of sheaths that I do. It adds character to the piece. I have found that in many cases it helps to epoxy it to the sheath you are covering in just a few strategic spots, before wetting, just to keep it in place until you get a good start on the sewing. Once the epoxy is dry, you can wet it with wet rags to soften it. Chuck Burrows can probably tell you more about the process. I am pretty much just winging it. Learning as I go. Get a catalog from Dan Winkler, and look at Karen Shooks work if you want to see real artistry in rawhide, or braintan. The sheath in my post is in the theme of her work, but I am not yet in her league.