"The saggar firing is more successful if the saggars are similar to
the size and shape of your pot. A tall vase will require two elongated
bowl shapes, or one very tall saggar with a shallow bowl lid. A small
pot round pot needs a smaller round saggar. For the best results, allow
at least an inch of air space between your saggar wall and the sides of
your pot. The amount of air space on the top of the saggar is not as
critical, and variations in space provide variations in your finished
pot. Typically, you should have at least an inch to about 5 inches of
space above the pot.
The walls of the saggar are thrown to about ¹/8 to ¼ of an inch
thick. A consistent thickness throughout the saggar walls helps to
prevent cracking during the firing process. Even so, the saggars will
eventually crack. The crack can be patched with kiln cement and used
until they completely fall apart. The saggars are bisque fired to cone
08–06."
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