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Nicky S

Bisque fire with mug rims up or down

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Will be  firing a bisque fire of porcelain ware Mugs without handles What is the best way to fire ( thinking of warpage ) Should the rims be facing up or down Wondering if it makes a difference 

Thank you Nicky

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I’ve stacked mug on their sides with no ill effects. The only time I get warping in the bisque is if I’ve done something that involves plastic memory during the forming stages, usually if I accidentally knock a rim during trimming. 

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If your wares are constructed properly any orientation will be fine short of sitting on their handles. However, if you have delicate parts beware that at firing temps they can slump if they have any pressure on me. I stack bisque firings like  crazed jenga player. Glaze firings are another matter because of possibility of pottery freezing to the shelf or other pieces and the need for nice finishes.

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