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Showing results for tags 'hump mold'.
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Hello, I'm a self taught potter and recently been using a very large hump mold for a platter. I had luck once, but ever since everything seems to warp. My edges curl up and it doesn't stay flat. I usually let it sit for a good 5 hours so that it doesn't crack. It looks totally normal when I pull it off, but the next day after it's dried it warps. Any advice? I've attached a file of my glazed piece that turned out okay and a photo of the leather hard warped piece.