Pernette

A pernette is a prop to support pottery in a kiln so that pottery does not touch each other or kiln's floor.[1] In archaeology, they may be upside-down baked clay tripods, leaving characteristic marks at the bottoms of the pottery/porcelain.[2][3] They expose the bottom of the fired piece to the full heat[4] and prevent the pieces from sticking to each other.

Tripod pernette (an archaeological find). Placed into a kiln upside down with respect to the drawing
Pernettes stuck in the walls of the saggars to separate flat pieces

References

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