The Obvara technique, which originated in Eastern Europe around the 12th Century, involves scalding the finish on the pottery to seal the porous surface. Similar to the raku process, a bisqued pot is heated, in this case to 1650°F (899°C) and removed from the heat. The difference is that the pot is then dipped into a specific Obvara yeast mixture before being dunked in water to rapidly cool the piece. The effects are quite stunning.
In today’s post, an excerpt from her new video Raku Firing: Expanding the Potential of the Raku Kiln, Marcia Selsor shows how to enhance the effects of an Obvara firing by texturing the surface and then shows the exciting process.- Jennifer Harnetty, editor.
Using horsehair and feathers in raku firing yields incredible marks that can’t be created in any other type of firing. But for optimal results in horsehair and feather raku, you should have a smooth surface. Marcia Selsor creates this ideal surface with terra sigillata and I loved her no-muss-no-fuss method for mixing sig. In today’s video, an excerpt from her brand new video Raku Firing: Expanding the Potential of the Raku Kiln, Marcia demonstrates this technique and a horsehair/feather firing.- Jennifer Harnetty, editor.
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In this installment of the Ceramic Arts Daily Presents video series, Marcia Selsor draws from her extensive experience with raku firing to show a variety of techniques that can easily be done in any raku kiln. She starts out with the basics of raku, covering equipment, safety, and suitable clays and glazes for the process. From there, she moves on to preparing pots for firing with a variety of decorative techniques. Finally, it’s time to play with fire! Marcia demonstrates four exciting post-firing techniques for the raku kiln: basic raku, horsehair and feather raku, saggar firing, and obvara. If you’ve been wanting to experiment with raku and other post-firing techniques, this video will get you off to a great start!
Many years ago, while handbuilding a large form, ceramic artist Marcia Selsor was struggling to support two slabs that she wanted to join at right angles. So, she set out to build a custom tool to serve
this purpose: a right angle jig to support the form in progress. Today, Marcia shows us how to make and use her right angle jig, a simple tool she came up with to make building geometric sculpture easier.
Today’s post is a sampling of what’s inside our new free download Slab Roller Techniques and Tips: A Guide to Selecting a Slab Roller and Making Slab Pottery. In it, Marcia Selsor demonstrates how tarpaper can be used as a molding material for slab building.