Making ceramics is a science.
Prevent warping ceramics.
The better you understand the technicalities of the process the easier it will be for you to prevent accidents such as cracking and warping.
For more technical detail on the factors contributing to clay memory and ceramic warping check out the september 2019 issue of ceramics.
Tiles and slabs will shrink while drying so use enough weight to hold them.
You may even want to build moats around the piece to ensure even drying.
Placing a second piece of plywood over the tile adds just enough weight to lightly compress the tiles and helps prevent warping.
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This time delay video demonstrates how a flat piece of drying clay can warp if bent while wet.
While both cracking and warping plague tiles plates and other flat pieces.
Clay is a natural.
Porcelain is especially difficult to throw without warping.
You may be wondering what exactly happens to clay when it is fired material first let s talk about the chemistry of clay.
Grog usually makes clay less likely to warp.
Keep pieces away from the edge of the kiln.
Cracking and or warping of pottery during drying or firing is a class of problems that frustrates almost every potter at one time or another.
Cracks particularly bottom cracks are more prevalent in bowls vases mugs and other upright pieces.