IOD Moulds can be used with IOD Air Dry Clay, paper clay, polymer clay, and casting resins to add a classic flair to any furniture surface, picture frame; any number of your diy projects! If Sugar Arts are your jam, definitely purchase a separate set for all your creative baking. IOD Moulds are food safe and oven safe. Follow manufacturer's recommendations to prevent damage to your mould set. Create beautiful candies, cookies and cakes with a combination of any Iron Orchid Designs Moulds.