Finnabair moulds feature unique and edgy designs that are ready to be used on mixed media projects, home décor, art pieces and more. Finnabair moulds feature unique and edgy designs that are ready to be used on mixed media projects, home décor, art pieces and more. Use with Amazing Casting Resin, paper and polymer clays, hot glue — any molding material. Prima Marketing’s high quality silicone molds are heat-resistant and food safe (molds dedicated for food arts can be used with fondant, for molding chocolate and more).