L. P. Skeen on thu 14 mar 02
If you are firing platters or flat items in a Raku kiln, my experience has
been that they will often crack because of uneven heating. If they survive,
get 'em out with a shovel. I believe Marcia Selsor may be the Flat Items in
Raku Guru for this question..........
L
----- Original Message -----
From: "Celia Littlecreek"
To:
Sent: Thursday, March 14, 2002 10:43 PM
Subject: Raku question
I know that EVERY knowledgeable person is not at NCECA so I have a
question. I am starting to make large platters, very shallow bowls and flat
wall decorations. By large, I would say 18 to 24 inches. I have done many
smaller items, no problems. How should large pieces be fired in the Raku
kiln? What about wet glazes?
Celia Littlecreek
Littlecreeks Uniques
littlec@paulbunyan.net
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Celia Littlecreek on thu 14 mar 02
I know that EVERY knowledgeable person is not at NCECA so I have a =
question. I am starting to make large platters, very shallow bowls and =
flat wall decorations. By large, I would say 18 to 24 inches. I have =
done many smaller items, no problems. How should large pieces be fired =
in the Raku kiln? What about wet glazes? =20
Celia Littlecreek
Littlecreeks Uniques
littlec@paulbunyan.net
Working Potter on fri 15 mar 02
Carefully,lol, couldn't resist that one!! I would definitely bisque , carful
in firing to aim the flame path[s] toward a target brick as a large wide
piece easily could heat unevenly if the flame is focused.I would make sure
the tongs had pads that were flat that came in contact with the ware so as
not to put a hole in it picking it up with tongs.Make the post firing bed
amply large enough to land the hot from the kiln pice safely as we can get a
bit excited when removing the flaming hot items.Make sure you use witness
cones in more than one viewable position to record the eveness of your
firing chamber.Make sure the flame path is surrounding the form in the
firing pattern.Keep the piece covered when reducing so there is minimal
shock across the form to reduce stress.my 2c.
Misty
In a message dated 3/14/2002 10:09:47 PM Eastern Standard Time,
littlec@PAULBUNYAN.NET writes:
> I know that EVERY knowledgeable person is not at NCECA so I have a
> question. I am starting to make large platters, very shallow bowls and
> flat wall decorations. By large, I would say 18 to 24 inches. I have done
> many smaller items, no problems. How should large pieces be fired in the
> Raku kiln? What about wet glazes?
>
Tony Ferguson on fri 15 mar 02
Celia,
I would put the pieces up on wads or small stilts to aid in even heating
from all around the platter. "Wet" glazes--I like to glaze the day before
but have fired minutes after glazing. I like to decrease the odds of things
cracking. I have heard of some folks "Steam" firing their works wrapped in
aluminum foil but I have never tried it. Good luck. Make sure there is no
direct flame on the larger piece as well.
Thank you!
Tony Ferguson
Stoneware, Porcelain, Raku
www.aquariusartgallery.com
Web Site, Marketing & Photographic Services for Artists
Workshops available
218-727-6339
315 N. Lake Ave
Apt 312
Duluth, MN 55806
----- Original Message -----
From: "Celia Littlecreek"
To:
Sent: Thursday, March 14, 2002 7:43 PM
Subject: Raku question
I know that EVERY knowledgeable person is not at NCECA so I have a
question. I am starting to make large platters, very shallow bowls and flat
wall decorations. By large, I would say 18 to 24 inches. I have done many
smaller items, no problems. How should large pieces be fired in the Raku
kiln? What about wet glazes?
Celia Littlecreek
Littlecreeks Uniques
littlec@paulbunyan.net
____________________________________________________________________________
__
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.
Richard Jeffery on fri 15 mar 02
slowly, and start from cold kiln, unless you feel brave enough to sacrifice
one as an experiment.
in my experience, wet glazes tend to flake off if rushed in a raku kiln
Richard Jeffery
Web Design and Photography
www.theeleventhweb.co.uk
Bournemouth UK
-----Original Message-----
From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.CERAMICS.ORG]On
Behalf Of Celia Littlecreek
Sent: 15 March 2002 03:43
To: CLAYART@LSV.CERAMICS.ORG
Subject: Raku question
I know that EVERY knowledgeable person is not at NCECA so I have a
question. I am starting to make large platters, very shallow bowls and flat
wall decorations. By large, I would say 18 to 24 inches. I have done many
smaller items, no problems. How should large pieces be fired in the Raku
kiln? What about wet glazes?
Celia Littlecreek
Littlecreeks Uniques
littlec@paulbunyan.net
____________________________________________________________________________
__
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.
william schran on fri 15 mar 02
Celia - You asked: "How should large pieces be fired in the Raku
kiln? What about wet glazes?"
I've had good success with larger flat forms (plates, tiles) by
firing them flat (if shelf/kiln diameter allows) on little scrap
pieces of insulating fire brick, so the form doesn't sit directly on
the kiln shelf. I always allow glazed work for raku to dry 24 hours
prior to firing.
Bill
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