PotteryPam
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Here are the 5,6,7 cones. Even though they are large self supporting cones, I put them in a clay holder because the 04 cone in my first bisque fire fell over and fused to one of my pots, and ruined the rim. Thanks for your help and attention!
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Thank you. Yes it is a big learning curve, but didn’t expect a brand new kiln to be so off. Perhaps their firing schedules were not developed with the 3” bricks in mind. L and L support suggested firing a cone lower.
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I did not add anything to the programmed Cone 6 medium speed. My cones were 5,6, and 7; I used an 04 cone for my first bisque fire to 04. L and L support suggests that I fire to cone 5 instead of cone 6 next time, but I was hoping for a more accurate solution. To me that sounds like just shooting in the dark, but perhaps that’s all we can do in ceramic firings? I was thinking that it would be more accurate to try a thermocouple offset of about 100 degrees F, but I guess I’ll just try the novice Cone 5 medium speed program.
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Yes, I was using the novice program for the cone six glaze at medium speed. Perhaps I should use the fast speed which would produce less heat work, but then I’d be worried about getting other problems from going too fast? I do have the vent sure system, and I turn the vent off as soon as, the firing is done. I do not leave the vent on during cooling.
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Related to this topic, I just did my first bisque 04 and cone six glaze firing in my new L&L e23M -3. During the bisque firing myself supporting cone fell over and fused to a pot next to it. It fell sideways, not a normal bending. Then in my glaze fine, which was done at medium speed it way over fired, my 5, 6 and 7 cones all melted down horizontally. I was overcautious and put nearly all of my pieces on cookies, and the unglazed bottoms actually stuck to the cookies! Is that because the kiln was firing way too hot? I also got minute pinholes in practically every piece. When I called the store where I had purchased the kiln they suggested that I fired to cone five with a 20 minute hold. And the other suggestions?
