Discover the Re-Design With Prima ® Modeling Material. A new way to create your favorite castings from moulds or create free-form shapes! This Air Dry-Material is pliable and easy to use, simply take it out of the container, press it gently into your favorite Decor Mould ® and release it. Allow it to air-dry. For best results we suggest laying a damp paper towel over the casting to allow it to stay moist during the drying process. This will help minimize shrinking and any cracking from occurring. Most Air Dry Materials have shrinkage and this is normal of Air-Dry Modeling Materials. Our Air-Dry Modeling Material is also non-toxic.