Open windows to allow the fumes from baking the clay to escape your kitchen.
The ceramic tile helps to stabilize the temperature inside the pans and the paper protects the clay from the glaze on the tile. Keeping the project covered protects it from the heat, avoids scorching, and contains the fumes.
You can cover a roasting pan with aluminum foil if you can’t find a large enough aluminum pan.
For instance, if the piece is 1. 75 inches (4. 4 cm) thick, bake it for 3. 5 to 5. 25 hours. Polymer clay won’t burn when baked at a low temperature, so don’t be afraid to leave it in the oven too long.
You may want to make some test projects to find the perfect temperature and time for pieces of varying thicknesses. If you think your creation is under-baked, you can cure it again in the oven using the same method as before.
The clay doesn’t need to be specifically formulated for baking in a toaster oven; following the directions for use in a conventional oven will have the same results. You may want to use a separate oven thermometer to gauge the temperature as some toaster ovens are prone to spikes and dips in temperature. [8] X Research source Because a toaster oven is small, this method works best for beads, charms, ornaments, or small sculptures.
For instance, if the clay piece is 2. 5 inches (6. 4 cm) thick, bake it for 5 to 7. 5 hours. If the clay is covered, it shouldn’t burn even if you leave it in the oven for hours.
It’s a good idea to bake several test pieces of varying thickness to help you find the best temperature and time for each.
