Best for permanent markers; often used for tracing.
Use permanent markers, colored pencils, or acrylic markers. Avoid wax-based crayons or pastels, as they will melt in the oven. How About A Friendly Shrink?
You can use #6 plastic takeout containers (polystyrene) as a cost-effective substitute. 2. Design and Preparation Best for permanent markers; often used for tracing
Cut out your shapes with scissors or a craft cutter. Important: If you are making a keychain or charm, punch a hole before baking; the plastic will be too hard to punch afterward. 3. The Shrinking Process Best for permanent markers