Liquitex Modeling Pasts are extra heavy body and very opaque. The pastes consist of marble paste made of marble dust and 100% polymer emulsion. The medium is used to build heavy textures on rigid supports and create three-dimensional forms. It dries to the hardness of stone. It can be sanded or carved when thoroughly dry. Additionally, the medium an be handled like clay if the top of the container is removed and some of the water is allowed to slowly evaporate until it reaches a clay-like consistency. The Liquitex acrylic paste adheres to any non-oily, absorbent surface. Drying too quickly causes mud cracking that is usually cosmetic, not structural. When mixed with acrylic colors will act as a weak tinting white, while increasing thickness and rigidity. Liquitex modeling paste is an excellent substrate for acrylic paint, oil paint, oil pastel, oil bars, watercolor, graphite or dry pastel.