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Why do you recommend firing a new kiln with only kiln furniture in it during the first firing?

Updated on Jan 24, 2025

The kiln should be fired without greenware during the first firing so the elements can form a protective coating before being exposed to clay fumes. The main reason, though, is to give the new kiln owner practice in firing without worrying about ware inside the kiln. Look at the first firing as a rehearsal.