Rikki Gill on mon 16 jun 03
I don't know if this happens often, but my uneven Olsen kiln instantly
became even, and still is, after I coated it once with ITC, about six years
ago. Good luck, Rikki Gill
----- Original Message -----
From: "Fara Shimbo"
To:
Sent: Monday, June 16, 2003 9:20 AM
Subject: Evening Out The Temperature in a Torchbearer Kiln
> Hi, Folks,
>
> Anybody got any suggestions for evening out the temperature
> in an Olympic Torchbearer kiln? I've noticed there's about
> 3 cones difference between the bottom and the top even when
> I put a full shelf just under the top port. I have a full
> shelf about three inches off the kiln floor. Fortunately
> my glazes will work in a wide temperature range so I just
> fire the high temp stuff on the bottom and the medium temp
> stuff on the top, but for workshops I'd like it to fire more
> evenly. Any suggestions would be much appreciated.
>
> Fa
> --
> ===========================================================
> Fara Shimbo, Master Crystalliere, Certified Public Nuisance
> -----------------------------------------------------------
> Shimbo Pottery, P.O. Box 41, Hygiene, Colorado 80533 USA
> 720.272.0442 7AM to 2 PM, Mountain Time
> www.crystalline-ceramics.info www.shimbopottery.com
> Silly Science Fiction: http://klysadel.net
> ===========================================================
> SAVE THE CAROUSEL OF PROGRESS! www.carouselofprogress.com
>
>
____________________________________________________________________________
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Fara Shimbo on mon 16 jun 03
Hi, Folks,
Anybody got any suggestions for evening out the temperature
in an Olympic Torchbearer kiln? I've noticed there's about
3 cones difference between the bottom and the top even when
I put a full shelf just under the top port. I have a full
shelf about three inches off the kiln floor. Fortunately
my glazes will work in a wide temperature range so I just
fire the high temp stuff on the bottom and the medium temp
stuff on the top, but for workshops I'd like it to fire more
evenly. Any suggestions would be much appreciated.
Fa
--
===========================================================
Fara Shimbo, Master Crystalliere, Certified Public Nuisance
-----------------------------------------------------------
Shimbo Pottery, P.O. Box 41, Hygiene, Colorado 80533 USA
720.272.0442 7AM to 2 PM, Mountain Time
www.crystalline-ceramics.info www.shimbopottery.com
Silly Science Fiction: http://klysadel.net
===========================================================
SAVE THE CAROUSEL OF PROGRESS! www.carouselofprogress.com
camoore on mon 16 jun 03
Hi, Fa,
I was told to raise my bottom shelf 7 inches off the floor of the kiln. I
was further encouraged (but have not done so yet) to use 1/2 inch spaces and
add another shelf above the bottom shelf. That uses up a lot of vertical
space. But perhaps raising your bottom shelf would help.
Keep us other Torchbearer owners informed.
Charles
Sacrameto
----- Original Message -----
From: "Fara Shimbo"
To:
Sent: Monday, June 16, 2003 9:20 AM
Subject: Evening Out The Temperature in a Torchbearer Kiln
> Hi, Folks,
>
> Anybody got any suggestions for evening out the temperature
> in an Olympic Torchbearer kiln? I've noticed there's about
> 3 cones difference between the bottom and the top even when
> I put a full shelf just under the top port. I have a full
> shelf about three inches off the kiln floor. Fortunately
> my glazes will work in a wide temperature range so I just
> fire the high temp stuff on the bottom and the medium temp
> stuff on the top, but for workshops I'd like it to fire more
> evenly. Any suggestions would be much appreciated.
>
> Fa
> --
> ===========================================================
> Fara Shimbo, Master Crystalliere, Certified Public Nuisance
> -----------------------------------------------------------
> Shimbo Pottery, P.O. Box 41, Hygiene, Colorado 80533 USA
> 720.272.0442 7AM to 2 PM, Mountain Time
> www.crystalline-ceramics.info www.shimbopottery.com
> Silly Science Fiction: http://klysadel.net
> ===========================================================
> SAVE THE CAROUSEL OF PROGRESS! www.carouselofprogress.com
>
>
____________________________________________________________________________
__
> 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.
Paul Vernier on tue 17 jun 03
>Fara,
>
>I have learned to fire my Torchbearer to a half cone difference. The most
>important thing I have done to accomplish this is to buy a dual probe
>thermocouple. I am assuming you are using a damper on top as well as the
>baffle shelf inside. A slight adjustment to the damper can create a large
>temperature difference between top and bottom. Openning the damper draws
>heat up and closed heat down. The dual probes allow you to observe and
>adjust quickly. I can't over emphasize this. I have done a lot of
>adjustments as well as the ITC, a fiber cap, staggered shelves. The only
>thing I would suggest is raising the bottom shelf at least an inch. I use
>4 inches and I believe that is what olympic suggest. This allows for a bit
>more combustion of the gas before it travels up. ?? But might be good for
>reduction which can be challenging at times. Don't worry about the
>temperature difference until you get around bisque temperature.
>
>Are you doing crystal glazes in a gas kiln? If so the fiber cap will slow
>the cooling and save gas.
>
>Paul
>In Santa Cruz, CA
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