A protective ceramic box or enclosure used inside a kiln to shield pottery from ash, direct flames, and volatile glaze fumes. Wares are stacked inside the cassette, which is then sealed before firing. This ensures a clean, controlled atmosphere for delicate glazes or specific atmospheric effects.
Heard on the job
Make sure the cassette is completely sealed with wadding so the ash doesn't ruin the white glaze.
Also heard as
- saggar