In conducting reseach on the physical properties and durability of coating materials used in the conservation of art objects, difficulty was encountered in efforts to make uniformly thick, coherent, free-standing films for testing purposes. An efficient, rapid casting technique has been developed utilizing reusable molds of teflon FEP (polyhexafluoropropylene) coated aluminium. The technique is applicable to the preparation of films from a wide range of materials. Detailed drawings of the moulds are provided and a list of materials and equipment is given.