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Mmpotter    0

Help! Our Corelite shelves ( 1" X 18" X 18" ) cracked in half

during firing. Not all just a couple. Cone 10 reduction.

Anyone have this happen?

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Wyndham    98

I've fired to cone 10 r quite a few times and have not had an issue. Is it possible something bumped them or something while in storage? Did they absorb water and froze, just guessing now.

Wyndham

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Mark C.    1,798

I have heard of some cracking with New ones from a few reasons-Bad batch from Factory and as mentioned wet or frozen ones.

Mark

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JBaymore    1,432

Are you storing them when not in use laying horizontally or vertically?

 

best,

 

..................john

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Mmpotter    0

Thank you all for responding! I just cracked the door today. It's a car kiln. I could see that a couple on top cracked , no broke. I did not load it. I fired it. I will be unloading with my class Thursday. Then I can investigate further. They were out all winter but under cover. I'm in Colorado. :-). I'll let you all know what I see. I do know it went to cone 11.

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Mark C.    1,798

As these where on top my thought is they got hot fast and had water in them hence the cracks.

You should store them off a concrete surface say up on wood to keep them from weeping up moisture during the winters

My advancers are out but under cover always but also up on a two x frame of wood with zero issues.

Also stored vertically

Mark

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neilestrick    1,381

It happens to everyone at some point. I've unloaded a couple of kilns where the pots were holding up the shelf. Happened in college- once with old shelves, and once when a post from the salt kiln melted. Another reason it's good to have your pots only a tad shorter than the post-  the shelf can't fall very far when it breaks!

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