![]() This is even more noticeable with drawings where light will create shadows underneath the lines. ![]() Unfortunately, I don’t always want to display my art that way (in a mat.) Also, should any areas of the film be left unpainted or even slightly transparent with thin washes of paint, it creates a slight shadow effect on the backing since it’s just hanging loose. One is a mostly physical mounting method rather than chemical, meaning to press the film surface to the backing by means of a mat, much as how watercolor or drawings are typically mounted, and just taping or gluing the edges. There are two approaches that seem to work best. The biggest problem I’ve had with these films is in mounting it to a permanent backing in order to display the art in a frame when it’s finished. Oil paint does shrink slightly as it ages, and this material will not, so it’s conceivable that there could be some problem there. If the paint surface is protected under glass or varnished then scratches would be less of a worry. Even acrylics, which seem to adhere the best, can be fairly easily scratched off. Long term adhesion of paint to this film surface is an unknown factor. It’s also much less expensive than high quality paper or canvas, especially in large rolls. No amount of water would cause it to wrinkle or buckle. I’ve tested turpentine solvent on the film and have seen no damage. Some drawing mediums like ink or pencil will work nicely on this surface although, it can be difficult to gradually build up dark values in pencil, and erasers just smear the graphite.Ī major benefit of using this film is that unlike paper or canvas, it needs no preparation for paint media such as oils that will not damage it. Nonetheless, some watercolor painters like to use Yupo because of the type of effect it gives with the paint, in spite of the lack of proper adhesion. The medium just sits on the surface without any proper adhesion. The smooth surfaces of untreated clear film or the Yupo film does not accept paint mediums very well. Yupo is smooth and opaque white, and Denril is translucent. The polyester brands are either clear or matte. The brands of Yupo and Borden & Riley (“Denril”) use polypropylene, which looks and behaves the same as polyester. Other brands include Azon (“Herculene”) and Grafix, also made with polyester. “Mylar” from Dupont is the original brand made out of polyester. There are several types and brands of films on the market.
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