What is bisque firing?

Aug 14

Bisque firing is the first firing in pottery, done at a lower temperature than glaze firing. Its purpose is to harden the clay so it’s easier to handle and decorate. During this stage, all physical and chemical water is removed from the clay. The piece becomes porous, allowing glaze to absorb evenly. Bisque firing also strengthens the piece, making it less fragile than raw clay but still unglazed. It typically occurs at temperatures between 1730°F and 1940°F (945°C–1060°C). After bisque firing, the piece is ready for glazing and a second firing. Without this step, glaze application would be difficult and messy. The bisque stage is also when potters check for cracks or flaws. It’s a crucial transition from soft clay to lasting ceramic.