Slip (noun) is a liquefied suspension of clay particles in water. It differs from its very close relative, slurry, in that it is generally thinner. Slip has more clay content than its other close relative, engobe. Slip is usually the consistency of heavy cream.
Slip is often used in decoration. It may be left the natural color of the clay body from which it is made, or it may be colored with oxides. It is applied to wet or soft leather-hard greenware.
Slip may also be used for casting clay in plaster molds. Casting slip almost always has added ingredients to keep it in a uniformly consistent suspension until dried.
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