Jennifer J Reed on mon 28 jan 02
I am a high school ceramics teacher with
electric kilns and the ability to fire
between cone 04 and cone 6. I
received a grant to purchase glaze
materials with the intention of
incorporating math and science into my
art projects and want to focus on
proportions through glaze mixing and the
chemistry of oxidation and reduction
through firing.
…Which leads me to my questions: First,
is it possible to achieve reliable
reduction within lidded or saggared
forms fired in an electric kiln?
Second, if so, do you know of a glaze
recipe that has the following ideal
attributes: 1) looks good fired under
oxidation, 2) looks good fired under
reduction, 3) looks DIFFERENT fired
under reduction than it does under
oxidation, and 4) is food safe?
Thanks for your time,
Jennifer Reed
***********************
Jennifer J. Reed
Ceramics Learning Coach
North Pole High School
***********************
Cl Litman on mon 28 jan 02
Can't answer your question about a specific glaze but would like to offer
a suggestion. Ian Currie's new book would make a nice starting point for
glaze testing. More readable than the first one. A fair bit of math can
be worked into it. Some glaze chemistry. If you set up a series of
tests from his book, the kids and you would get a good idea of how silica
and alumina affect the glaze surface. It's a very powerful method of
testing that is best done with a group because it is a fair bit of work.
However, from what I've seen of it, you do learn a lot after you're done.
He has more details about the method on his website.
Cheryl Litman - NJ
cheryllitman@juno.com
On Mon, 28 Jan 2002 12:19:03 -0900 Jennifer J Reed
writes:
> I am a high school ceramics teacher with
> electric kilns and the ability to fire
> between cone 04 and cone 6. I
> received a grant to purchase glaze
> materials with the intention of
> incorporating math and science into my
> art projects and want to focus on
> proportions through glaze mixing and the
> chemistry of oxidation and reduction
> through firing.
>
> …Which leads me to my questions: First,
> is it possible to achieve reliable
> reduction within lidded or saggared
> forms fired in an electric kiln?
> Second, if so, do you know of a glaze
> recipe that has the following ideal
> attributes: 1) looks good fired under
> oxidation, 2) looks good fired under
> reduction, 3) looks DIFFERENT fired
> under reduction than it does under
> oxidation, and 4) is food safe?
>
> Thanks for your time,
> Jennifer Reed
> ***********************
> Jennifer J. Reed
> Ceramics Learning Coach
> North Pole High School
> ***********************
>
>
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