THE OBVARA FIRING PROCESS: OBVARA IS A VARIATION OF THE RAKU FIRING PROCESS. Obvara is an old Eastern European technique involving scalding the finish on the pottery to seal the porous surface. The pieces are thrown on the potters wheel, sculpted, then coated with terra sigillata (a very fine clay that produces a glaze like surface) They are burnished then bisque fired. The bisqued piece is heated to 1500 to 1650 F. in the raku kiln. It's removed from the kiln and dunked into the Obvara mixture. The mixture consists of flour, yeast and water. The mixture bubbles as it is burned by contact with the pot and provides the unique colors and patterns on the piece. It is then dunked in water to rapidly cool and stop the reducing process. The pieces range from tan to almost black with speckles. After firing, each piece is sealed with an acrylic sealer to make a durable surface. As with Raku, and all low firing techniques, These pieces are still slightly absorbent and are not intended for liquid food storage. Due to the firing and quenching procedure pieces may have small surface cracks and crazing in the glazes. They do not effect the integrity of the piece and are part of the process. Clean pieces with a damp cloth or simply dust with a soft cloth. Treat it as you would any fine raku work and it will give years of dependable service.
Obvara firing techniques facebook page www.facebook.c...
Негізгі бет Тәжірибелік нұсқаулар және стиль Obvara Firing at Raku Rendezvous
Пікірлер: 2