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Degree of moisture that will soak into plaster when casting, or into bisque when glazing or decorating with nonfired colors.

Emphasizing an area with lighter or darker colors, by shading or outlining.

A highly volatile, flammable solvent used in many paint and varnish removers, including nail polish. In certain cases can be used to remove fabric paint.

Acid free
Contains no harmful acid and has a pH of at least 6.5

Acrylic paint
paint made from three basic ingredients – pigment, water and synthetic resin.

Greenware parts added to main casting (ex. handles to cups). See Stick-Ons.

Ability of a glaze, underglaze or nonfired color to stay in place on a given surface.

A substance used to bond one surface to another.

Letting newly mixed casting slip set, undisturbed, for several days. During this aging period, all the materials will become properly blended and produce the best casting qualities.

Small spray gun used for applying paint colors, glazes, underglazes or nonfired colors. Also used for shading and general decorating.

Alumina Hydrate
A mineral that, in a powder form, prevents porcelain or stoneware greenware surfaces that touch from fusing together during firing or from adhering to kiln shelf.

Antique Brass and Antique Bronze
Special effect glazes that produce polished metal-like surfaces.

Antique Glazes
Trade name of glazes with a frosted look and variance of color tones.

Removing or applying color to accentuate detail and make a piece look old.

Antiquing Gels
See Water-Based Antiquing Gels

A decorative element applied onto another surface. Applying material such as lace, string, grog, etc. to ware; name of a type of ceramic add-on.

Art Glazes
Trade name of glazes that produce a blend of colors within themselves.

Automatic Shut-Off Device
A mechanical device triggered by a small cone that shuts off the kiln.