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Sgraffito, Slip Trailing, and Painting.
Engobes are either natural clays or a mixture of clays and ceramic raw
materials, and are typically rich earth colors and subdued tones. Only
water is added to obtain a working consistency like thick cream.
Methods of Decoration. Engobes may be brushed, poured, or
trailed thinly on wet or dry greenware. Sometimes they are used to
cover an inferior body, but generally are applied as decoration to
contrast with the color of the clay piece.
Slip painting, slip trailing and Sgraffito are especially good
decorating methods for engobes. For best results when slip painting,
use short brush strokes. The designs should be compressed with direct
strokes of the brush which is heavily loaded with the engobe.
More elaborate designs may be made by the slip trailing method. Try
decorating with a Slip Trailer to produce thin and thick line
designs. When the Sgraffito process is used, designs are scratched into
a layer of engobe so that the color of the clay shows through.
When used for decorative ware on stoneware and left unglazed, most of
them have a smooth matte or satin finish, except SE-701, 720, and 740.
These will have an irregular surface at Cone 5-6.
Any dry or moist pottery clay may be decorated with AMACO®
Engobes and fired to the maturing temperature of the basic clay.
Usually, a clear transparent glaze for unique effects is applied over
the entire decorated shape.
Amaco® Engobes are available in dry form in one pound jars.
Tableware producers must have all finished ware tested and approved as
safe for dinnerware through a certified laboratory due to possible
variations in firing temperature and possible contamination.
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