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Jack
Doherty
Soda glazed porcelain
What Jack say's about his work;
All of the
work is once fired and soda glazed. It has become an increasingly
important part of the making process. This way of firing ceramics
introduces an element of risk and unpredictability which is not a
part of conventional high temperature glaze firings. When a sodium
product, in this case sodium bicarbonate , is mixed with water and
then sprayed into the kiln at high temperature the resulting vapour
is drawn through the kiln chamber where it reacts with the silica
and alumina present in the clay. The pots then have a glaze surface
which shows the direction and passing of this vapour. |
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