The metal clay must be completely dry before you begin the torch fire procedure. Set up your work space in a well-ventilated area with your metal clay on a fire brick. Start your flame and move around the piece in a circular motion, not staying on one point for long. You might see little flashes of flame. Don't panic. That is to be expected. Time yourself for about a minute. Your metal clay should take on a peach color. It is important not to use a butane torch and metal clays that contain organic material, glass, porcelain, ceramic, or non-fireable gemstones.