At what stage of clay can you add glaze?

Applying glaze to clay requires careful consideration of the clay’s moisture content and the desired glazing technique.

Leather-Hard Stage:

The leather-hard stage, when the clay is partially dry but still retains some moisture, is an ideal time to apply glaze. The glaze adheres well to the surface and allows for controlled application.

Bone-Dry Stage:

At the bone-dry stage, when the clay is completely dry and ready for firing, glaze can also be applied. However, it may require a bit more care to prevent excessive absorption.

Greenware Stage:

Applying glaze to unfired, greenware clay is possible but requires caution. The glaze may cause the clay to become more fragile, and there’s a risk of the glaze running or cracking during firing.


Factors such as glaze viscosity, application method, and desired surface effects influence the timing of glaze application.

Choosing the right stage for glaze application ensures successful bonding and a desired outcome during the firing process.

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