Baking polymer clay in a home oven is generally safe when done properly. Polymer clay is a type of modeling clay that hardens when baked at a specific temperature, typically between 230°F to 275°F (110°C to 135°C). When baked at these temperatures, polymer clay releases fumes that are considered safe in a well-ventilated area.
However, it's essential to follow these precautions when baking polymer clay:
Dedicated baking surface: Use a separate, dedicated surface like a baking sheet or tile for baking polymer clay. Avoid using the same surface you use for food, as some residual chemicals or particles from the clay might transfer to your food.
Proper ventilation: Ensure good ventilation in your workspace or kitchen while baking polymer clay. If possible, open windows or use an exhaust fan to help dissipate any fumes that may be released during baking.
Covering the clay: Some crafters prefer to cover the clay with an aluminum foil tent to prevent direct contact between the clay and the oven's heating element. This can help avoid scorching or burning of the clay.
Monitoring baking time: Follow the recommended baking time for your specific brand and type of polymer clay. Overbaking can lead to the release of more fumes and might affect the quality of your finished project.
Cleaning the oven: After baking polymer clay, you may want to run the oven at a higher temperature for a short period to burn off any residual fumes. Additionally, clean the oven racks and interior thoroughly to prevent any cross-contamination with food.
Regarding using the same oven to bake food after polymer clay baking, there is a potential risk of cross-contamination if proper precautions are not taken. If you've baked polymer clay in your oven, make sure to clean it thoroughly afterward to remove any residue. Proper cleaning and ventilation will help minimize the risk of any potential health concerns when using the oven for baking food.
It's worth noting that some artists and crafters prefer to use a dedicated toaster oven or polymer clay-dedicated oven to avoid any potential cross-contamination and to manage fumes separately from their main cooking oven. If you frequently work with polymer clay, you might consider this option for added peace of mind.
As long as you take the necessary precautions and maintain good hygiene and cleanliness, you can safely use your home oven for both polymer clay baking and food preparation without getting sick.