Polymer Clay can only be hardened by cooking it in the oven. Depending on the kind and brand of Polymer Clay the temperature at which the clay has to be baked can range from 210° F to 300° F for up to 30 minutes. … Polymer clay is a plastic-based clay.
How do you firm up polymer clay?
- Cool the Clay. Place the polymer clay in the freezer for approximately 10 minutes before you start working with it. …
- Cool Your Hands. …
- Decrease the Temperature in Your Workroom. …
- Mix It with Older Clay. …
- Air out the Clay. …
- Leach the Clay. …
- Use the Pasta Machine.
Why is my polymer clay not hardening?
My polymer clay wasn’t hardening was because the oven temperature was too low. Once I used a separate oven thermometer, I could accurately see the temperature of the oven. Another reason for polymer clay not to harden is that it hasn’t been baked for long enough.
