Nicky S 20 Posted September 27, 2019 Report Share Posted September 27, 2019 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 Quote Link to post Share on other sites
Mark C. 4,879 Posted September 27, 2019 Report Share Posted September 27, 2019 (edited) I stack my porcelain glasses (no handles ) both ways in a bisque but generally put the bottom down on a shelve that way they sit naturally . I do not get warpage in bisques fires Edited September 29, 2019 by Mark C. Rae Reich and Nicky S 2 Quote Link to post Share on other sites
Callie Beller Diesel 2,556 Posted September 27, 2019 Report Share Posted September 27, 2019 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. Nicky S and Rae Reich 2 Quote Link to post Share on other sites
kraythe 24 Posted September 28, 2019 Report Share Posted September 28, 2019 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. Nicky S 1 Quote Link to post Share on other sites
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