A mist coat of paint is one that is initially applied to a model using the desired color (after the primer, if used). The mist coat provides a very thin layer of paint that will help subsequent color coat layers adhere better. A mist coat is applied by very lightly "dusting" the model. A very general rule is to apply a single mist coat about 12 to 18 inches away from the model. The idea is to just provide a light dusting of paint.
A thin tack coat usually applied to fill porous surfaces such as zinc rich primers.
A thin sprayed coat to uniform metallic finishes. Also used to blend colors. Sometimes used with light amounts of solvents to uniform finish and/or increase gloss.
For inorganic zincs, a mist coat is applied to “wet” the surface prior to application of a full coat.
A coat of paint that is applied very lightly in a fast sweeping motion, for instance mist coating metallics and pearls can make the particles stand up and achieve a brighter appearance. Also used for evening out metallics to reduce mottling.