Tom Whitaker shows us a simple and effective pottery tool for opening a ball of clay - especially designed to create an evenly thick bottom... Genius! Want more pottery tools - then read our top 10 list of the best pottery tools for beginners. Get Ceramic News Straight to your Inbox Please enter your name. Please enter a valid email address. Get the Newsletter Something went wrong. Please check your entries and try again. Don't worry, we don't sell or spam your email address. You can unsubscribe at any time.