If you are handbuilding with earthenware clay, use a kiln to fire it.
If you are handbuilding with earthenware clay, use a kiln to fire it. Ovens do not get hot enough to fire earthenware ceramics, and if you’re not careful, baking the clay can cause it to crack. Depending on your project and clay type, a kiln can take about 8 hours to heat up to about 2000 degrees Fahrenheit, and an additional 12 hours to cool down.