plastiline

Plastiline, or plastiline modeling clay, is a non-drying, oil-based material used for sculpture and modeling. It remains pliable after manipulation, unlike traditional clays that air-dry or fire, making it suitable for revisions and repeated shaping. It is commonly used in sculpture, maquettes, and stop-motion animation.

Origin and availability: Plastiline was developed in the 19th century by William Harbutt in England and marketed under the brand Plasticine. Today it is produced by various manufacturers and marketed worldwide under multiple names, including plastiline in several languages.

Composition and properties: The formulation typically includes waxes or fats, mineral oils or petrolatum, and pigments. The oil-based base prevents drying and cracking, so the material remains soft and reusable. It softens with warmth and can be worked with fingers or tools. It does not bond permanently to most surfaces and can be removed with mild cleaning.

Applications: Artists use plastiline to sculpt temporary models, plan designs, and prepare master forms for molds. In animation, it is used for character modeling and to hold shapes between shots; it can also be used as a base for plaster or silicone molds.

Handling and safety: Plastiline is generally non-toxic, but pigments vary by brand. It is not edible. Store it wrapped in plastic or in an airtight container to prevent drying and keep it away from heat.