November 30, 2007, Newsletter Issue #269: Slip description

Tip of the Week

If you havenīt decorated with slips, youīre missing out. One of the benefits is that the slips stay put, so designs donīt blur or run, unlike many glazes. This also means you can make textures in the slip that will stay exactly as you made them. And you can make designs that wonīt work with glazes since glazes need multiple coats (ie splattering.) You can squeeze slip out of a bottle into designs (slip trailing) and use it for sgraffito (coat with slip then scratch designs in the slip exposing the raw clay.) (Note: sometimes decorating slips are called engobes, and the terminology isnīt tightly defined; they are generally the same thing.) Slips are best applied to leatherhard greenware, but may be used on bisque also. They may be used on low-fire and high-fire clay. The slip must be similar to the clay however, so the shrinkage between the two is similar and the slip doesnīt crack or peel off.

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