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His tests on high and low fire clays will lead to an ultimate choice of luscious glazes – understandable and repeatable, a huge support when planning and making whatever ceramic object!
John Colbeck’ s next workshop at La Meridiana: http://www.lameridiana.fi.it/pottery_workshops_john_colbeck_34_13.htm
As we have tested many local materials (clays from all over Europe, brought by the participants) we have learned quit a lot about their look in soda firing. We have also seen the wide possibilities, which surely will lead to more experiments.
In my case the experiment will start immediately after building new wood kiln with the chamber for soda firing as the one I have right now is not suitable for soda firing (it is soft brick and need to last another year for our woodfiring).
For now I can share the results from the firing in La Meridiana:
All pots fired in gas kiln, reduction, approximatly to Seger cone 8-10 (1250 – 1300°C), soda introduced after cone 8 partly down.
Clay tested: Polar VV – from H+K Lubná (http://www.kerlubna.cz/) – first picture show the clay not fired and second show this clay fired in woodkiln to 1250°C
|Kaolin Sedlec Ia||33|
Clay tested: cca 1/2 M11 salt-Wittgert / 1/2 Stoneware-St.Amand
Gail Nichols Rutile
Nepheline Syenite 10
Note: Slip applied in different thicknes
Clay tested: Polar VV – from H+K Lubná (http://www.kerlubna.cz/)
Note: Slip applied quit thick
Clay tested: 1/2 shamot clay for shiedel chimney (the inside tube) / 1/2 Polar VV – from H+K Lubná (http://www.kerlubna.cz/)
Results: Slip applied quit thick
Karin found this article about soda firing for free online. It’s from ceramicartsdaily.org
Let us know what you think about that!
Hello to everybody!
I would like to remind you this is not just a place where you can post your pictures but also something more. Please, let us know what you think about this workshop, what you would like to have from this experience, what it’s not working according to your opinion and you would like to do.
Thanks a lot!!
Here some pictures Ursala sent us yesterday. We are just possting them but I am sure she will tell us more about each of them.
Hello to everybody. In the last two days we got some emails from the other artists we invited for this workshop. Because of the ash cloud we don’t have them here phyisically but we asked them to help us with this blog. Thanks Miraslova for your posts and Ursula for your pictures! We hope to get more and more from all of you.
Here they are! Ready to glaze some tests for the first firing.