=?iso-8859-1?q?Marilu=20Tejero?= on fri 23 apr 04
Please, I need your input on the consequences of opening an electric kiln, once the "glow" is gone.
This is educational. I need several opinions.
Curiosity to "have a peak" is going to kill a cat.
Marilu,
Mango Hill,....but no mangoes on sight..
Hialeah ....more like...miamiCUBA meeameeKooba
NW Miami, looking at it from the south.... yeah ... FL
http://www.geocities.com/SoHo/Exhibit/3051
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Runyan,Jacob on fri 23 apr 04
Marilu,
As a former glass blower, I can tell you that it is very
important that you just wait. Going through the quartz
inversion very slowly is quite importat. Even at only 200
deg F, touching a piece of glass (glaze) with gloves on can
introduce localized internal stresses into the glass which
may can cause crazing at a later date.
My impatient approach...at around 300/350 I crack the kiln
lid 1". When I crack it like that, I general pop it open
about half way to take a quick peak...enough to either make
the last hour of cooling very difficult or a little too
easy.
Although it's not an educated opinion, anything above 350
is too hot for me.
-Jacob Runyan
Please, I need your input on the consequences of opening
an electric kiln, once the "glow" is gone.
This is educational. I need several opinions.
Curiosity to "have a peak" is going to kill a cat.
Marilu,
Mango Hill,....but no mangoes on sight..
Hialeah ....more like...miamiCUBA meeameeKooba
NW Miami, looking at it from the south.... yeah ... FL
http://www.geocities.com/SoHo/Exhibit/3051
---------------------------------
Do You Yahoo!?
Todo lo que quieres saber de Estados Unidos, América Latina
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settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
Marc Hudson on fri 23 apr 04
Hi Marilu,
Visual heat occurs a little above 800 deg F, much too hot for removing mo=
st=20
stoneware or earthenware without risking unwanted crazing or cracking (ar=
e=20
you doing Raku?). Even 500 deg F is a little too hot. If you must open =
the=20
kiln soom, at least let the kiln cool down to less than 200 deg F. There=
is=20
no advantage in rushing the opening only to find damage that could have b=
een=20
avoided. Hope the opening is a success,
Marc Hudson
Playing with Fire
Espa=F1ola, NM, USA
www.artfulnm.org/hudson.html
---------- Original Message -----------
From: Marilu Tejero
To: CLAYART@LSV.CERAMICS.ORG
Sent: Fri, 23 Apr 2004 00:10:11 -0500
Subject: Opening a hot kiln.
> Please, I need your input on the consequences of opening an=20
> electric kiln, once the "glow" is gone.
>=20
> This is educational. I need several opinions.
>=20
> Curiosity to "have a peak" is going to kill a cat.
>=20
> Marilu,
> Mango Hill,....but no mangoes on sight..
> Hialeah ....more like...miamiCUBA meeameeKooba
> NW Miami, looking at it from the south.... yeah ... FL
>=20
> http://www.geocities.com/SoHo/Exhibit/3051
>=20
> ---------------------------------
> Do You Yahoo!?
> Todo lo que quieres saber de Estados Unidos, Am=E9rica Latina y el=20
> resto del Mundo. Vis=EDta Yahoo! Noticias.
>=20
>=20
_________________________________________________________________________=
_____
> Send postings to clayart@lsv.ceramics.org
>=20
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>=20
> Moderator of the list is Mel Jacobson who may be reached at=20
melpots@pclink.com.
------- End of Original Message -------
Darnie Sizemore on fri 23 apr 04
Marilu,
I usually will prop the lid open about 1-2 inches on the lid sitter at around 500 degrees. (My kiln has an electric temp. readout) I won't totally open the lid until 150 degrees.
Darnie
Marilu Tejero wrote:
Please, I need your input on the consequences of opening an electric kiln, once the "glow" is gone.
This is educational. I need several opinions.
Curiosity to "have a peak" is going to kill a cat.
Marilu,
Mango Hill,....but no mangoes on sight..
Hialeah ....more like...miamiCUBA meeameeKooba
NW Miami, looking at it from the south.... yeah ... FL
http://www.geocities.com/SoHo/Exhibit/3051
---------------------------------
Do You Yahoo!?
Todo lo que quieres saber de Estados Unidos, América Latina y el resto del Mundo.
Visíta Yahoo! Noticias.
______________________________________________________________________________
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/
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william schran on fri 23 apr 04
Marilu wrote: >Please, I need your input on the consequences of
opening an electric kiln, once the "glow" is gone.<
Consequences - possible severe burns and shattered pots.
Bill
wayneinkeywest on fri 23 apr 04
Marilu:
It took two months for my eyebrows,
mustache and beard to grow back after
opening the kiln at 600 my first firing
way back when. Lost a good many
pieces too...
"ping, ping, crack!"
I was being an impatient brat.
I'll never do it again....ever...
"A word to the wise is sufficient"
Wayne Seidl
Key West, Florida, USA
North America, Terra
Latitude 81.8, Longitude 24.4
Elevation 3.1 feet (1m)
wrote:
> Please, I need your input on the consequences of opening an
electric kiln, once the "glow" is gone.
>
> This is educational. I need several opinions.
>
> Curiosity to "have a peak" is going to kill a cat.
>
>
> Marilu,
> Mango Hill,....but no mangoes on sight..
> Hialeah ....more like...miamiCUBA meeameeKooba
> NW Miami, looking at it from the south.... yeah ... FL
>
> http://www.geocities.com/SoHo/Exhibit/3051
Gene and Dolita Dohrman on fri 23 apr 04
One way to beat an expensive wax job!
Dolita-who doesn't look nearly as good in a beard and mustache as our very
own Wayne!
dohrman@insightbb.com
Louisville, KY
Ivor and Olive Lewis on sat 24 apr 04
Dear Marilu Tejero,
You ask..<< Please, I need your input on the consequences of opening
an electric kiln, once the "glow" is gone.>>
If you mean that the hot glow of the elements has faded then you may
have a catastrophe of shattered pots.
If you mean there is no redlight shining from the peep hole, your kiln
may still be hot enough to crash you pots through the Quartz
inversion. Again you will get catastrophic effects, often called
"dunting"
Rapid cooling can damage of some forms of refractory lining
shortening the life of your kiln.
My suggestion, don't open a kiln until you are sure you can hold the
pots in your bare hands, not glove, just with your skin.
Best regards,
Ivor Lewis. Redhill, South Australia
S. Morris on mon 26 apr 04
---
> >
> > Marilu,
I have the same problem of wanting to peak as soon as
it's dark, but I usually have to restrain myself, but
a good trick to know of when it's ok to crack the lid
if you don't have a temp reader on your kiln, is roll
a piece of paper and hold it in one of the peeps if
the paper lights on fire, or singes the kiln is too
hot to open, if not the kiln is good to crack ( most
paper burns at around 450degrees). I usually won't
open a kiln all the way until the I can put my hand in
without it being uncomfortably hot.... but it's
amazing what a pair of gloves can do ( just
kidding)...
Have fun, be paitient!
Steph M.
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Gary Harvey on mon 26 apr 04
In my opinion with the number of times I have fired my kiln, I think it is
best to wait till the inside of the kiln is close to room temp. This will
save a lot of temper problems when you learn you just cracked a great pot.
GH
----- Original Message -----
From: "Runyan,Jacob"
To:
Sent: Friday, April 23, 2004 10:00 PM
Subject: Re: Opening a hot kiln.
> Marilu,
>
> As a former glass blower, I can tell you that it is very
> important that you just wait. Going through the quartz
> inversion very slowly is quite importat. Even at only 200
> deg F, touching a piece of glass (glaze) with gloves on can
> introduce localized internal stresses into the glass which
> may can cause crazing at a later date.
>
> My impatient approach...at around 300/350 I crack the kiln
> lid 1". When I crack it like that, I general pop it open
> about half way to take a quick peak...enough to either make
> the last hour of cooling very difficult or a little too
> easy.
>
> Although it's not an educated opinion, anything above 350
> is too hot for me.
>
> -Jacob Runyan
>
>
>
>
> Please, I need your input on the consequences of opening
> an electric kiln, once the "glow" is gone.
>
> This is educational. I need several opinions.
>
> Curiosity to "have a peak" is going to kill a cat.
>
>
> Marilu,
> Mango Hill,....but no mangoes on sight..
> Hialeah ....more like...miamiCUBA meeameeKooba
> NW Miami, looking at it from the south.... yeah ... FL
>
> http://www.geocities.com/SoHo/Exhibit/3051
>
>
>
>
>
>
>
>
>
> ---------------------------------
> Do You Yahoo!?
> Todo lo que quieres saber de Estados Unidos, América Latina
> y el resto del Mundo.
> Visíta Yahoo! Noticias.
>
>
____________________________________________________________________________
__
> 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.
>
>
____________________________________________________________________________
__
> 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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