Marvin Klotz on tue 8 mar 05
Help. Last year our ceramics teacher gave a glaze assignment where
everyone made a different copper red glaze (cone 10 reduction). One glaze
that was a big winner was Adrian Saxe Red, all of the students wanted to
use it. The glaze was a beautiful red with turquoise spots, but it was
very, very runny and soon cleaning up the kiln shelves after a firing
became a big problem (the beginning students were particularly fond of this
glaze) and so we retired it from the studio glaze shelf. Recently, I
decided to make up a batch for myself and the resulting glaze was a red but
had no turquoise spots. Thinking I had done something wrong, I made up
another small batch - still no turquoise spots. So, can anyone help me, is
anyone familiar with the glaze, did the first student make it up wrong
somehow, did I make it up wrong twice, does anyone have a recipe that
produces a copper red with turquoise spots?
Joan Klotz,
Venice, CA.
Ann Brink on wed 9 mar 05
Hello Joan,
Just thinking generally- it may be related to the particle size of the
copper. Some of them must be too large to turn red. Your copper may be more
uniformly fine, or you are screening more thoroughly. This is my theory
because I have a copper red bowl (different recipe) with overglaze copper
carb. decoration of leaves, etc, which stayed green....too much copper to
turn color. Maybe with heavier reduction it would have. Maybe you are
reducing more, or longer, than the class firings. If you're still associated
with the class, can you glaze a pot with your glaze & take it there to be
fired...just a thought.
Ann Brink in Lompoc
> Help. Last year our ceramics teacher gave a glaze assignment where
> everyone made a different copper red glaze (cone 10 reduction). One glaze
> that was a big winner was Adrian Saxe Red, all of the students wanted to
> use it. The glaze was a beautiful red with turquoise spots, but it was
> very, very runny and soon cleaning up the kiln shelves after a firing
> became a big problem (the beginning students were particularly fond of
this
> glaze) and so we retired it from the studio glaze shelf. Recently, I
> decided to make up a batch for myself and the resulting glaze was a red
but
> had no turquoise spots. Thinking I had done something wrong, I made up
> another small batch - still no turquoise spots. So, can anyone help me,
is
> anyone familiar with the glaze, did the first student make it up wrong
> somehow, did I make it up wrong twice, does anyone have a recipe that
> produces a copper red with turquoise spots?
>
> Joan Klotz,
> Venice, CA.
>
>
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