Allison Lubenow on fri 13 jul 07
This is my first time posting, so hopefully this works out. I fired my new
e23t for the first time overnight, and I have a question about the
cooldown. I turned the vent off upon "completion". Should I have opened
some peepholes or propped up the lid after I did this, or would it have
made the kiln cool down too rapidly. I'm not too worried about it now, but
I want to know what I'm doing when I do my first load. Thanks, Allison
Mayssan Shora Farra on sat 14 jul 07
On Fri, 13 Jul 2007 15:47:44 -0500, Allison Lubenow
wrote:
This is my first time posting, so hopefully this works out. I fired my new
e23t for the first time overnight, and I have a question about the
cooldown. I turned the vent off upon "completion". Should I have opened
some peepholes or propped up the lid after I did this, or would it have
made the kiln cool down too rapidly. I'm not too worried about it now, but
I want to know what I'm doing when I do my first load. Thanks, Allison
Hello Allison:
I keep my vent on until totally cool and it seems to be fine for over 50
firings now. However my current glaze does not need to develope in the
slow cooling down, so whenever I would want a controlled cool down I'll do
it by programing the Dinatrol to cool down as slow as needed. I think it
is safer for the kiln, the elements and you not to open peeps or prop the
lid open.
Mayssan
In unbelievably beautiful May weather in July. Charleston WV
http ://www.clayvillepottery.com
Chuck Wagoner on sat 14 jul 07
Hi Allison,
It all depends on the glazes. Some bright shiny glazes work well when =
cooled
quickly from the high end. Many matt glazes need to be cooled very =
slowly
down to 800 or so (cent). (No faster then 80 degrees and hour, or about =
150f
an hour) You should still be careful not to fire up too quickly in any =
case.
Shutting the vent off may not be a good idea unless it is the type where =
the
blower is away from the kiln, like the L+L that is on the wall. The ones
that are under the kiln can get too hot. I just keep the peep holes =
tight
and cover the vents holes in the lid if you have any on the way down.=20
Other problems can be caused by quick cooling, especially if you do not
"soak" at the high end. Clays should not be cooled too quickly as they =
need
work time too.
Just get "Mastering Cone 6 Glazes" by Ron Roy and John Hesselberth (sp?) =
and
you will know all you need to know about the above. It is the BEST BOOK =
I
have ever used and it has wonderful food safe glazes. Even if you are =
not
firing at cone 6 it is still a must. (Yes, there are other great books =
out
there too, but this is the one that helped us most.)=20
Happy Potting,
Chuck
Charles Todd Wagoner
North Vermillion Jr./Sr. High School Visual Art Dept.
Billie Creek Village Potter, Rockville, IN
Charter Member "Bald Headed Potters of America"
cwag@abcs.com
cwagoner@nvc.k12.in.us
http://www.abcs.com/cwag
http://www.nvc.k12.in.us
http://www.myspace.com/themuddoctor
=20
=20
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Allison =
Lubenow
Sent: Friday, July 13, 2007 4:48 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: L&L e23t Cooldown ?
This is my first time posting, so hopefully this works out. I fired my =
new
e23t for the first time overnight, and I have a question about the
cooldown. I turned the vent off upon "completion". Should I have opened
some peepholes or propped up the lid after I did this, or would it have
made the kiln cool down too rapidly. I'm not too worried about it now, =
but
I want to know what I'm doing when I do my first load. Thanks, Allison
_________________________________________________________________________=
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William & Susan Schran User on sat 14 jul 07
On 7/13/07 4:47 PM, "Allison Lubenow" wrote:
> This is my first time posting, so hopefully this works out. I fired my ne=
w
> e23t for the first time overnight, and I have a question about the
> cooldown. I turned the vent off upon "completion". Should I have opened
> some peepholes or propped up the lid after I did this, or would it have
> made the kiln cool down too rapidly. I'm not too worried about it now, bu=
t
> I want to know what I'm doing when I do my first load.
My first suggestion is to always & completely read the manual that comes
with the kiln. L&L produces a comprehensive instruction manual that will
help you understand all of it's capabilities and methods to get good firing
results.
That said, I would do as you have done. When the firing is complete, turn
off the vent and leave everything closed up to slowly cool down.
I would also recommend you use witness cones in every firing to have a good
record of the heat work in the kiln.
For example: My L&L e23s had a reading of 2250=B0F for my ^6 glaze firing.
After turning off the thermocouple offset because I'm using "S" type
thermocouples and doing very fast firings, ^6 now goes over at 2210=B0F (with
a ten minute hold). If I wasn't using witness cones, I'd never been able to
set the proper top temperature.
If you're firing to ^6 for your glaze firings, then read "Mastering Glazes"
and learn about controlled cooling to
improve your glazes.
--=20
William "Bill" Schran
wschran@cox.net
wschran@nvcc.edu
http://www.creativecreekartisans.com
Ron Roy on sun 15 jul 07
Hi Allison,
Do soak at the end of your firings - it helps the glazes and helps even out
the temperature from top to bottom - cooling with the vent on only till
1000C ( 18030F) then shut it off - slower cooling usually gives better
looking glazes.
RR
>This is my first time posting, so hopefully this works out. I fired my new
>e23t for the first time overnight, and I have a question about the
>cooldown. I turned the vent off upon "completion". Should I have opened
>some peepholes or propped up the lid after I did this, or would it have
>made the kiln cool down too rapidly. I'm not too worried about it now, but
>I want to know what I'm doing when I do my first load. Thanks, Allison
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
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