Obvara (Raku)
The Obvara technique, originating in Eastern Europe, is a ceramic decorative method that is carried out after an initial firing, generally in kilns of Raku. This process involves rapidly immersing the hot piece, at a temperature of approximately 1000°C, in a fermented mixture of flour, water and yeast. The reaction between the hot surface of the ceramic and the organic components of the mixture creates unique patterns in shades of brown, black and beige, due to the carbonization of the solution in contact with the piece.
Obvara is valued not only for its unpredictable results, but also for its connection to ancient traditions of ceramic decoration. The resulting effects are reminiscent of organic textures, such as aged leather or tree bark, and are especially appreciated in decorative ceramics.Interesting Fact
The Obvara technique has roots in the Baltic countries, where it was historically used to decorate utilitarian ceramics and protect pieces from water absorption before waterproof glazes were developed.Helpful Tip
To experiment with Obvara, use heat shock resistant clays and apply textures to the surface of the piece before firing to enhance the visual effects. Be sure to work in a well-ventilated area, as the carbonized mixture can produce fumes during the process.
