Bruce Girrell on sun 1 aug 99
Richard Gralnik wrote:
> My next door neighbor has 4 small electric kilns and a lot of
> other supplies in
> her garage from when she did glass slumping. One of the materials is
> something she only knew of as "separator". Basically you dust
> the slumping
> mold with this fine white powder before you lay the glass on it
> and heat to
> slumping temperature. When the thing cools, the slumped glass
> lifts off of
> the undamaged mold. Apparently the separator can be reused too.
>
> Does anyone know what this probably very refractory stuff is or
> thoughts on
> how to figure it out?
My guess would be alumina hydrate, but my main reason for replying is to ask
what temperature she uses to achieve slumping? I want to make some curved
colored glass "windows" for some candle holders and thought slumping would
be the thing to do. I just haven't checked into what it takes to do it yet.
Thanks,
Bruce "in a slump" Girrell
douglas adams on tue 3 aug 99
Bruce,
Depending on what type of glass your using the temp. will vary. Most Glasses
start to melt at around 1400 f. and become fluid at 1800 f.. The books kiln
firing glass (Lundstrom)and the fused glass handbook(Reynolds)are two that I
can recommend. Good luck.
Douglas Adams
Pam Easley on wed 11 jul 01
I’d like to hear more about glass slumping, too. A bunch of clay students of
mine and I have taken several glass classes together, and loved it. One of
the guys just had a glass kiln made, so we will all get to experiment more.
Yes, I vote you put the info to the list – lots of us are multi-crafted!!
Pam in Seattle
Valerie Hawkins on wed 11 jul 01
I'd like to hear more also.
-----Original Message-----
From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.CERAMICS.ORG]On
Behalf Of Pam Easley
Sent: Wednesday, July 11, 2001 3:06 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Glass slumping
I’d like to hear more about glass slumping, too. A bunch of clay students of
mine and I have taken several glass classes together, and loved it. One of
the guys just had a glass kiln made, so we will all get to experiment more.
Yes, I vote you put the info to the list – lots of us are multi-crafted!!
Pam in Seattle
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Marianne Lombardo on wed 11 jul 01
I would like to hear more about glass slumping, since I already have a =
kiln, and am also a stained glass artist. I've already been thinking =
along those lines and would love to learn more.
Marianne Lombardo
Omemee, Ontario, Canada
email: mlombardo@nexicom.net
Jim Murphy on wed 11 jul 01
Pam -and others- make sure you also checkout the "Warmglass" website for its
great wealth of glass slumping, fusing and casting information:
Best of luck,
Jim Murphy
Arnold Howard on wed 11 jul 01
I recommend Boyce Lundstrom's books on glass fusing. He has written
three.
Glass fusing and slumping are fairly simple. You can experiment
with this if you have a small kiln and fusing compatible stained
glass (such as Bullseye). You don't even need a controller, to
start. The smaller the project, the easier it is to fire. Glass
starts getting complicated when the pieces become thick and large.
I have fired glass jewelry very rapidly, without breakage. The
QuikFire kiln fires so rapidly that the glass is finished and
cooled to room temperature within about 40 minutes.
Glass fusing is a visual process. You peer into the firing chamber
(wearing firing safety glasses), either by looking through the
peephole or by raising the lid/cracking the door slightly. When the
glass has fused to the extent that you like, turn off the kiln. One
advantage of a digital controller is that it can duplicate firings.
Hot glass is a fascinating medium. I hope you have fun with it.
Arnold Howard
Paragon
--- Marianne Lombardo wrote:
> I would like to hear more about glass slumping, since I already
> have a kiln, and am also a stained glass artist. I've already
> been thinking along those lines and would love to learn more.
>
> Marianne Lombardo
> Omemee, Ontario, Canada
> email: mlombardo@nexicom.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.
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Craig Martell on mon 4 apr 05
Hi:
As Arnold Howard has already said, you don't need to crash cool to avoid
devitrification or "devit" as it's called by glass people.
My wife and daughter are both glass fusers/slumpers. I'm in the
minority. I make pots. They tolerate the dust and the rest of it.
You can get a recipe for a devit spray at www.warmglass.com if you have any
problems. My wife uses a devit spray as some types of glass that she uses
are prone to devit. Others are pretty much trouble free. To find the
devit spray at warmglass, just click on "tutorials".
regards, Craig Martell Hopewell, Oregon
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