I'm enjoying working on it so far. I've only just started but it's making progress. It's an American Bison horn. I have the books Recreating the 18th Century Powder Horn and Powder Horns Fabrication & Decoration. Right now I'm using one of those 8" 4 way rasps. It works okay but I'll be shopping for some longer rasps and files with comfortable handles. I will post updates now and then.