floor of the kiln). Whats up?
It’s most likely one of three things: 1. You’re putting them in before they are cooled enough to stay round. 2. Your kiln is too hot, possibly because your pyrometer isn’t reading accurately or you kiln has hot spots. 3. Your annealing temperature is too high for the length of time you are letting them soak. To keep from putting them into the kiln while they are still soft, simply hold your hand above the marble so that it is in the shadow. Wait until the red glow disappears from where you just burned off the punty mark. Then set the marble in the kiln gently with the punty mark pointing up. Don’t drop it in or roll it in. If you still get flat spots, you might need to check your pyrometer and your annealing schedule. Remember that annealing temperatures are stated in ranges, not specific temperatures. If you’re going to be putting marbles in the kiln throughout the day, you’ll want the marbles to anneal at a temperature near the bottom of the annealing range. That way they can soak lo
