Sarah Barnes on wed 5 nov 97
Hi! I just fired a bisque kiln ^06 in a gas updraft kiln. Some of the
stoneware pieces turned white. They seem to absorb water like any other
bisqueware, I didn't over fire as far as I can tell, so I am at a loss as
to why this happened. Has this happened to anyone else and do you know why?
Thanks for helping
Sarah
In Baltimore
sbarnes@mica.edu
Craig Martell on wed 5 nov 97
At 10:32 AM 11/5/97 EST, Sarah Barnes wrote:
>----------------------------Original message----------------------------
>Hi! I just fired a bisque kiln ^06 in a gas updraft kiln. Some of the
>stoneware pieces turned white.
Hello Sarah:
Are you firing more than one claybody? It's not unusual for stoneware clays
with a low iron content to fire white or off-white in the bisque. With more
iron in the clays, one would expect to see a pinker cast to the bisque ware.
regards, Craig Martell-Oregon...firing a coupla bisques myself today!!
Ron Roy on sat 8 nov 97
Hi Sarah,
Sometimes bisque will come out different colours because some is reduced
while the rest is oxidized. I certainly remember seeing that when I was
learning to fire my kiln. The more iron in the clay the more obvious the
difference.
>----------------------------Original message----------------------------
>Hi! I just fired a bisque kiln ^06 in a gas updraft kiln. Some of the
>stoneware pieces turned white. They seem to absorb water like any other
>bisqueware, I didn't over fire as far as I can tell, so I am at a loss as
>to why this happened. Has this happened to anyone else and do you know why?
>Thanks for helping
>Sarah
>In Baltimore
>sbarnes@mica.edu
Ron Roy
93 Pegasus Trail
Scarborough,Canada
M1G 3N8
Evenings, call 416 439 2621
Fax, 416 438 7849
Studio: 416-752-7862.
Email ronroy@astral.magic.ca
Home page http://digitalfire.com/education/people/ronroy.htm
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