How to cook clay? (+7 clay brands and their baking instructions)

In this article, we will answer the question “How to cook clay?”

How to cook clay?

Using conventional oven

Step 1

Read the instructions on the clay package to determine baking temperature and figure out which oven to use.  Typically, Cernit, Fimo, Premo, Sculpey, and Souffle clay are baked at 275 °F (135 °C). 

Kato clay needs to be baked at 300 °F (149 °C) while Pardo clay is generally baked at 325 °F (163 °C). Keep the windows of your kitchen open to let the fumes escape.

Step 2

In a deep aluminum pan, place a ceramic tile in the middle. Cover the ceramic tile with a piece of copy paper or parchment paper. 

The tile will regulate the oven temperature while the paper will keep the clay from the glaze on the tile. Covering your project not only protects it against heat but also prevents scorching and fumes.

Step 3

Carefully place your project over the tile and the paper in the center of the aluminum pan. Cover the pan with another aluminum pan of the same size. 

Flip it to adjust it on the roasting pan. Clip the two pans together using binder clips. You can also use a large enough sheet of aluminum foil to cover your roasting pan If you cannot find another aluminum pan of the same size.

Step 4

Place the aluminum pans in the center of the oven, equidistant from the heating elements and the oven walls. 

The baking time varies with the clay type and thickness of the clay. Typically, a baking time of 45 minutes per 14 inch (0.64 cm) of thickness is used. Similarly, a piece of 1.75 inches (4.4 cm) thickness should be baked for 3.5 to 5.25 hours.

Step 5

Remove the aluminum pan from the pan using oven mitts and transfer your project to an oven-safe counter or surface. Let the clay cool for about 30-60 minutes. A crumbly clay means It is under-baked.

Baking in a toaster oven 

Step 1

Read the instructions on the clay package to preheat the oven at a temperature specific to the clay. 

In case you are using mixed clay with no clear temperature guidance on the package, preheat your toaster oven to  265 °F (129 °C). Open the window of your kitchen to let the fumes escape.

Step 2

Use an oven thermometer to correctly read the temperature inside the toaster oven. 

A toaster oven has a small space. So It can only be used for beads, charms, ornaments, or small sculptures.

Step 3

Center a ceramic tile on a baking tray that usually comes with a toaster oven. If the ceramic plate or tile is glazed, cover it with a piece of parchment paper. This will protect your project from the glaze.

Step 4

Place your clay on the ceramic tile. Fold a piece of parchment paper in half to create a crease so that It forms a tent when allowed to sit. Place this tent over your clay project to keep the heat of the oven from burning your clay. 

Slide the tray into the toaster oven. Make sure the folded piece of parchment paper is not in contact with any of the heating elements inside the oven.

Step 5

The type and the thickness of the clay will decide the baking time. Read the instructions to set the timer correctly. Typically, a baking time of 30-45 minutes is required for ¼ inch (0.64 cm) thick clay. 

To be on the safe side, bake the clay longer than the instructed time to ensure the clay is cured. Bake a 2.5 inches (6.4 cm) thick piece of clay for 5 to 7.5 hours. Covered clay won’t scorch even If It is baked for longer than the instructed time.

Step 6

Remove the baking tray from the toaster oven using oven mitts and transfer your project to an oven-safe counter or surface. Let the clay cool for about 30-60 minutes. 

A crumbly clay means It is under-baked. To figure out the correct time and temperature dimensions for each clay, you need to bake a few test pieces.

Check out the best oven for baking polymer clay.

Polymer clay baking instructions by brand name chart 

Clay Brand Temperature Oven Time 
Cernit265°F (130°C)30 minutes for every 1/4 in (6mm) thickness
Clayzee 248-302°F (120-150°C)15 minutes for every 1/4 inch (6mm)
Du-Kit250°F (120°C)10 minutes for every 1/4 in (6mm) thickness
Fimo Clay 230°F (110°C)30 minutes for every 1/4 inch (6mm) thickness
Fimo Liquid 265°F (130°C)20 minutes 
Fimo Liquid with Fimo clay265°F (130°C)30 minutes 
Granitex275°F (130°C)15 minutes for every 1/4 in (6mm) thickness

Conclusion

In this article, we will answer the question “How to cook clay?”

References

https://www.polymerclayer.com/baking-polymer-clay.html
https://www.wikihow.com/Bake-Clay-in-the-Oven

Hello, I'm Sana Ameer. I'm a student of Food Science and Technology at UVAS. I like to bake and I aspire to become a Food blogger.