How long should polymer clay sit after baking?

Polymer clay is a versatile and popular material that artists and crafters use to create a wide range of projects, from jewelry and figurines to home decor items. Once your polymer clay creation has been carefully sculpted and baked to perfection, it’s important to allow it to cool and set before handling or finishing. In this article, we’ll explore the recommended duration for letting polymer clay sit after baking to ensure the best results for your creative endeavors.

The Baking Process

Polymer clay is composed of polymer particles, plasticizers, and pigments. When heated in an oven, the plasticizers soften, allowing the particles to fuse together and form a solid and durable object. The baking temperature and duration depend on the brand and type of polymer clay you are using.

Cooling Period

After your polymer clay creation has been baked, it’s essential to allow it to cool down before handling it. The cooling period serves several purposes:

1. Harden and Set:

The cooling process completes the hardening and setting of the polymer clay. Handling the clay while it’s still warm could lead to deformation, fingerprints, or smudging of delicate details.

2. Prevent Breakage:

Polymer clay is more vulnerable to breakage when it is hot. Allowing it to cool reduces the risk of accidentally damaging your creation while it’s still soft and pliable.

3. Avoid Distortion:

Some polymer clays have a tendency to slightly change shape during the baking process as they firm up. Allowing the clay to cool and stabilize helps prevent any further distortion.

The recommended cooling time for polymer clay after baking is typically around 15 to 30 minutes. However, this can vary depending on factors such as the thickness of your clay, the size of your creation, and the specific brand of polymer clay you are using.

A good rule of thumb is to let your polymer clay creation sit undisturbed on a heat-safe surface for at least 15 minutes after it has been removed from the oven. During this time, the clay will gradually cool down to room temperature, allowing it to fully harden and set.

Final Steps

Once your polymer clay creation has cooled and set, you can proceed with any additional finishing touches or techniques you have in mind:

  • Applying varnish or sealant to enhance the appearance and protect the surface.
  • Assembling components or attaching findings if you’re creating jewelry.
  • Sanding, buffing, or adding texture as desired to achieve your desired final look.


Allowing polymer clay to sit and cool after baking is a crucial step to ensure the best possible outcome for your creative projects. This cooling period allows the clay to harden, set, and stabilize, reducing the risk of breakage, distortion, or other potential issues. By following the recommended cooling time and handling your polymer clay creations with care, you’ll be able to enjoy the fruits of your creative efforts for years to come.

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