Leslie St.Clair on thu 7 jan 99
Hello everybody. Here's another way to ruin plates during a firing.. I
use an Orton bottom -mounted kiln vent, and have three holes drilled in the
kiln lid. My last glaze firing included plates on plate setters with the top
plate about 3 inches below the lid and directly underneath a vent hole. That
plate ended up warped and with a glaze discoloration right where the vent hole
was. The rest of the plates were fine. Does anyone know how far the plates
must be from the lid to avoid this problem? Thanks. Leslie St. Clair
Lesaint1@aol.com
Dave Eickholt on fri 8 jan 99
Hi, Leslie, why not load the kiln so the shelf with plate is protected by an
empty shelf placed above it? the top shelf would then deflect or divert the
air flow, yet not change the effectiveness of the venting system. Dave
Chris Schafale on fri 8 jan 99
Leslie --
I don't know the answer, but I wanted to tell you that I have had the
same problem at times (when my pieces were being fired by someone
else.) I would say either don't put plates (or other flat things,
like lids) on the top layer, avoid, if possible, getting the plate
right under a vent hole, or experiment with distance until you find
out. Please let me know if you do figure it out!
Chris
> ----------------------------Original message----------------------------
> Hello everybody. Here's another way to ruin plates during a firing.. I
> use an Orton bottom -mounted kiln vent, and have three holes drilled in the
> kiln lid. My last glaze firing included plates on plate setters with the top
> plate about 3 inches below the lid and directly underneath a vent hole. That
> plate ended up warped and with a glaze discoloration right where the vent hole
> was. The rest of the plates were fine. Does anyone know how far the plates
> must be from the lid to avoid this problem? Thanks. Leslie St. Clair
> Lesaint1@aol.com
>
>
Light One Candle Pottery
Fuquay-Varina, NC
candle@nuteknet.com
Galen Kirkwood on fri 8 jan 99
------------------
On Thu, 7 Jan 1999 09:24:52 EST, you wrote:
=3E----------------------------Original message----------------------------
=3E Hello everybody. Here's another way to ruin plates during a =
firing.. I
=3Euse an Orton bottom -mounted kiln vent, and have three holes drilled in =
the
=3Ekiln lid. My last glaze firing included plates on plate setters with the=
top
=3Eplate about 3 inches below the lid and directly underneath a vent hole. =
That
=3Eplate ended up warped and with a glaze discoloration right where the vent=
hole
=3Ewas. The rest of the plates were fine. Does anyone know how far the =
plates
=3Emust be from the lid to avoid this problem? Thanks. Leslie St. =
Clair
=3ELesaint1=40aol.com
Leslie,
Try putting an empty shelf in last as a sort of =22lid=22 for the load. Also=
put
some cones on there to check temp. I've
noticed that if the =22lid=22 shelf is 1-2=22 below the lid there's about a=
cone or
two difference(at stoneware temps) .I
just did a small test fire with the lid shelf about 6=22 below the kiln lid =
and
the cones dropped at the same rate as the
rest of the kiln. So try an empty shelf on top, should help even the temp =
and
avoid cold temp shock.
Good luck,
Galen
Stephen Mills on fri 8 jan 99
cover the setting with a kiln shelf or a redundant plate as a shield
against the cold blast of air you obviously got through the vent holes.
Steve
Bath
UK
In message , Leslie St.Clair writes
>----------------------------Original message----------------------------
> Hello everybody. Here's another way to ruin plates during a firing.. I
>use an Orton bottom -mounted kiln vent, and have three holes drilled in the
>kiln lid. My last glaze firing included plates on plate setters with the top
>plate about 3 inches below the lid and directly underneath a vent hole. That
>plate ended up warped and with a glaze discoloration right where the vent hole
>was. The rest of the plates were fine. Does anyone know how far the plates
>must be from the lid to avoid this problem? Thanks. Leslie St. Clair
>Lesaint1@aol.com
>
--
Steve Mills
Bath
UK
home e-mail: stevemills@mudslinger.demon.co.uk
work e-mail: stevemills@bathpotters.demon.co.uk
own website: http://www.mudslinger.demon.co.uk
BPS website: http://www.bathpotters.demon.co.uk
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