huh, maybe you're putting it in a death grip with out thinking about it. I don't have anything on the handle of my farrier's rasp. It's not comfortable but I don't hurt myself with it. try adjusting your grip, or add a wooden handle to it. I keep telling myself to do that, I just don't get around to it. Lately I've been using my new microplane for a lot of the work that my farrier's rasp did. That thing is amazing.