This might require experimentation but some bodies just warp a lot more.
Prevent warping ceramics.
While both cracking and warping plague tiles plates and other flat pieces.
Placing a second piece of plywood over the tile adds just enough weight to lightly compress the tiles and helps prevent warping.
For more technical detail on the factors contributing to clay memory and ceramic warping check out the september 2019 issue of ceramics.
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Use the right clay body.
Clay is a natural.
Tiles and slabs will shrink while drying so use enough weight to hold them.
You may be wondering what exactly happens to clay when it is fired material first let s talk about the chemistry of clay.
You may even want to build moats around the piece to ensure even drying.
It explains the idea of clay memory and how this affects the ceramic piece both through drying and.
Porcelain is especially difficult to throw without warping.
Keep pieces away from the edge of the kiln.
Grog usually makes clay less likely to warp.
Cracks particularly bottom cracks are more prevalent in bowls vases mugs and other upright pieces.
The better you understand the technicalities of the process the easier it will be for you to prevent accidents such as cracking and warping.