Raku day.

This is the outcome of our raku tests yesterday. The clay mix stood up very well but our glazing was too thin on some pieces and had cold spots in the oven that we have to sort out before next test run.

Raku bowls from our raku day.
Raku bowls from our raku day.
Raku wall plaque.
Raku wall plaque.

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Raku bottle.
Raku bottle.
Raku, coloured slip on body.
Raku, coloured slip on body.
Raku bottle.
Raku bottle.
Lidded container, raku clay.
Lidded container, raku clay.
Lidded container, slab built , raku clay.
Lidded container, slab built , raku clay.
Raku bowl.
Raku bowl.
Raku bowl.
Raku bowl.

Ceramic bottles.

These are two porcelain bottles that were first fired with a white cone 6 glaze to make them waterproof then i sprayed on a low temp iron glaze with a good amount of clay in it so it stuck to the glazed surface. I then sprayed Albany slip over in places then a Lichen glaze. I then used a blow torch  to get the lichen to jump off in places. Then low temp. fired to 1020. deg.

ceramic bottles.
ceramic bottles.

A large ceramic container.

This is a large container that was slab constructed. Before bisc i put on a layer of under glaze then a copper carb. wash that i sponged off. After bisc i applied a dry glaze with a craw glaze on top. Low fire. This pot i am going to refire in a sagger to smoke it. I want the bare clay parts to be black.

Large container before smoke firring.
Large container before smoke firring.

 

Pots ready for the sagar fire.

These bottle shapes have had a terra sigillata cote and have been fired to 1020.The thin one has had two different colors

Group of bottle shapes before sagar fire.
Group of bottle shapes before sagar fire.
Here the darker terra is bleeding though.
Here the darker terra is bleeding though.
Detail of low temp sodium glaze on top of terra.
Detail of low temp sodium glaze on top of terra.
Terra bottles before sagar fire.
Terra bottles before sagar fire.

of terra on and the darker one can be seen to bleed through here and there. I have used a low temp glaze to mask off the parts not to be affected by the smoke. So we shall see how they come out after the smoke fire.

Ceramic bottles

This is a stoneware paperclay body that i used a slab roller and a texture stamp to make. It has been glazed to cone 6 with the following recipe ,—- Porcelain body clay, dry (low temp porcelain 1250c ) 20% / Silica -20% / Wollastonite – 20% / cal bor. frit 5 % / Borax – 15 %/ added 2% red iron ox. and 1% copper carb.    The glaze sits well on the body with no cracks but i would like less shine, but not a bad glaze. This was cone six with a 20 min soak. Next time i will add a bit of fine rutil to give it a bit of life.

A ceramic bottle. Cone 6.
A ceramic bottle. Cone 6.