Engobe

A white or colored slip applied to clay as a coating or by slip trailing. In traditional ceramics application is usually done at the leather hard stage, whereas in tile it is normally applied after dust pressing or as a powder layer during pressing. In traditional ceramics, engobes contrast with slips, they are usually formulated with less clay and more flux. A slip shrinks with the ware as it dries whereas an engobe is applied to an already completely dry (or partially dry) clay. The higher percentage of flux in an engobe bonds it to the surface during firing whereas a slip bonds to the surface during drying by the interlocking of clay particles at the interface. The tile industry uses the largest volumes of engobes by far, these are used as opaque barriers and gas bubble filters between less-than-white bodies and the glaze.

In Bound Links

• (Articles)

  Monoporosa or Single Fired Wall Tiles

  A history, technical description of the process and body and glaze materials overview of the monopor...

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