The best baking surface is glass, metal pan or metal baking sheet, or the Sculpey Oven-Safe Work Mat. Since paper will not catch fire at such a low temperature, it is safe to use cardboard, index cards, card stock paper or parchment paper to use under your piece in the oven. If you plan on using a metal baking pan/sheet/dish that you will use with food in the future, you need to first cover the surface with parchment paper or aluminum foil. If you are using clay-dedicated baking surfaces, then no paper or foil is required. The clay should not touch surfaces that are also used for food unless there is a barrier between the clay and the baking surface.