Gary and Carla Goldberg on tue 31 dec 02
Hi all - Please bare with me on this question. I have done low fire for =
years and now I want to do high fire (which I know nothing about).=20
Here is my dilemma - I would like to throw and handbuild stoneware to be =
used for cooking that will be fired in my electric kiln. I'm confused =
about getting the right combination of clay and glazes. I know I don't =
want to fire the bisque firing too high, or the glaze will not go on the =
pieces. But how do I know what cone to bisque fire?
For example, if my clay and glaze are to be fired at Cone 8 to 10, =
should my bisque firing be at Cone 5 (wild guess) and after glaze is =
applied, fire to Cone 8 - 10?
I know I need to just try stuff, but I live in Alaska and order my stuff =
from Seattle Pottery since clay purchased locally is pretty expensive =
($13.00/bag). Needless to say, I can't afford to pay several shipments =
of clay via barge ($65.00 a shipment) while I figure out which clay and =
glazes work best.
Any advice? Does anyone have a good combo from Seattle Pottery? =20
Thanks in advance, Carla
Christena Schafale on thu 2 jan 03
Hi Carla,
High-fire and mid-fire ware is usually bisqued anywhere from 010 to 04 to
keep it porous enough to accept the glaze. I bisque to 06 and glaze fire
to cone 6. Happy testing.
Chris
At 08:49 PM 12/31/02 -0900, you wrote:
>Hi all - Please bare with me on this question. I have done low fire for
>years and now I want to do high fire (which I know nothing about).
>
>Here is my dilemma - I would like to throw and handbuild stoneware to be
>used for cooking that will be fired in my electric kiln. I'm confused
>about getting the right combination of clay and glazes. I know I don't
>want to fire the bisque firing too high, or the glaze will not go on the
>pieces. But how do I know what cone to bisque fire?
>
>For example, if my clay and glaze are to be fired at Cone 8 to 10, should
>my bisque firing be at Cone 5 (wild guess) and after glaze is applied,
>fire to Cone 8 - 10?
>
>I know I need to just try stuff, but I live in Alaska and order my stuff
>from Seattle Pottery since clay purchased locally is pretty expensive
>($13.00/bag). Needless to say, I can't afford to pay several shipments of
>clay via barge ($65.00 a shipment) while I figure out which clay and
>glazes work best.
>
>Any advice? Does anyone have a good combo from Seattle Pottery?
>
>Thanks in advance, Carla
>
>______________________________________________________________________________
>Send postings to clayart@lsv.ceramics.org
>
>You may look at the archives for the list or change your subscription
>settings from http://www.ceramics.org/clayart/
>
>Moderator of the list is Mel Jacobson who may be reached at
>melpots@pclink.com.
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Jeff on thu 2 jan 03
I'll give you some info which I'm sure will be repeated many times.
Bisque just like you always do ^06 - ^04,,, the glazes won't apply well at
^5.
As far as using pieces for cooking, there have been threads on clayart
before, it seemed that most people said if you insist on cooking in your
pots, do not preheat your oven. Stovetop cooking wasn't recommended.
Jeff
Recuperating from remnants of a 24-hour flu bug, anything that others
describe as a 24-hour bug, bugs me for at least 36 hours!!
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG]On Behalf Of Gary and Carla
Goldberg
Sent: Tuesday, December 31, 2002 11:50 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Clay and Glaze Combos
Hi all - Please bare with me on this question. I have done low fire for
years and now I want to do high fire (which I know nothing about).
Here is my dilemma - I would like to throw and handbuild stoneware to be
used for cooking that will be fired in my electric kiln. I'm confused about
getting the right combination of clay and glazes. I know I don't want to
fire the bisque firing too high, or the glaze will not go on the pieces.
But how do I know what cone to bisque fire?
For example, if my clay and glaze are to be fired at Cone 8 to 10, should
my bisque firing be at Cone 5 (wild guess) and after glaze is applied, fire
to Cone 8 - 10?
I know I need to just try stuff, but I live in Alaska and order my stuff
from Seattle Pottery since clay purchased locally is pretty expensive
($13.00/bag). Needless to say, I can't afford to pay several shipments of
clay via barge ($65.00 a shipment) while I figure out which clay and glazes
work best.
Any advice? Does anyone have a good combo from Seattle Pottery?
Thanks in advance, Carla
____________________________________________________________________________
__
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
Snail Scott on thu 2 jan 03
At 08:49 PM 12/31/02 -0900, you wrote:
>For example, if my clay and glaze are to be fired at Cone 8 to 10, should
my bisque firing be at Cone 5 (wild guess) and after glaze is applied, fire
to Cone 8 - 10?
Just bisque to the same temperature that you used
to use for your earthenware - no change needed.
-Snail
william schran on thu 2 jan 03
Clara asked about bisque temperature and glaze/clay fit. Bisque is
usually accomplished between cones 08 - 04, depending on the
requirements of the clay and your specific glaze consistency and
application methods. I'd recommend at least cone 06, with 04 being
used by lots of folks. As to glaze/clay fit, I'd suggest first
contacting Seattle Pottery Supply and ask their recommendations as to
clays and fit of the glazes (in powdered form) they carry. If you're
making your own glazes, then you simply gotta test.
Bill
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