Tyler Ellis on thu 8 jul 04
Hi everyone,
I have taken on a project that requires me to do a firing in an
electric kiln, where the fired material needs to be reduced the whole time
it's above 600 degrees fahrenheit. I'm thinking that the best way is to
make a saggar to fire the material in. So, I need to know: Does the
saggar need to be made out of a special, non-porous clay or can I use
anything that matures at the temperature I need to reach? Should I fire
the Saggar first, before using it? How do I seal the saggar to keep the
reduction the whole time (without creating a bomb)? Also, it would be best
if the material I'm firing didn't end up with ash residue melted to its
surface, so I could use some suggestions about combustible materials (what
and how much).
If you're curious, I am heating small boxes made out of a particular
metal to allow the formation of a uniform magnetic dipole throughout the
material. The boxes will then be used to shield sensitive parts of an atom
trapping/cooling device from the strong magnetic fields created nearby.
Keep it muddy, Tyler
MudPuppy on fri 9 jul 04
My ceramics instructor once told me she uses a large tera cotta flower pot,
with the dish part as the sagar's lid...
Cathi Newlin, Mercer, Mo
mudpuppy@box49.com
http://www.box49.com
----- Original Message -----
From: "Tyler Ellis"
To:
Sent: Thursday, July 08, 2004 9:03 PM
Subject: Saggar making and firing in an electric kiln
> Hi everyone,
>
> I have taken on a project that requires me to do a firing in an
> electric kiln, where the fired material needs to be reduced the whole time
> it's above 600 degrees fahrenheit. I'm thinking that the best way is to
> make a saggar to fire the material in. So, I need to know: Does the
> saggar need to be made out of a special, non-porous clay or can I use
> anything that matures at the temperature I need to reach? Should I fire
> the Saggar first, before using it? How do I seal the saggar to keep the
> reduction the whole time (without creating a bomb)? Also, it would be
best
> if the material I'm firing didn't end up with ash residue melted to its
> surface, so I could use some suggestions about combustible materials (what
> and how much).
> If you're curious, I am heating small boxes made out of a particular
> metal to allow the formation of a uniform magnetic dipole throughout the
> material. The boxes will then be used to shield sensitive parts of an
atom
> trapping/cooling device from the strong magnetic fields created nearby.
>
> Keep it muddy, Tyler
>
>
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>
Ann Brink on fri 9 jul 04
Hi- be aware that terra cotta flowerpots are only good for low-fire.
Ann Brink
----- Original Message -----
From: "MudPuppy"
> My ceramics instructor once told me she uses a large tera cotta flower
pot,
> with the dish part as the sagar's lid...
>
> Cathi Newlin, Mercer, Mo
> mudpuppy@box49.com
> http://www.box49.com
> ----- Original Message -----
> From: "Tyler Ellis"
> >
> > I have taken on a project that requires me to do a firing in an
> > electric kiln, where the fired material needs to be reduced the whole
time
> > it's above 600 degrees fahrenheit. I'm thinking that the best way is to
> > make a saggar to fire the material in. So, I need to know: Does the
> > saggar need to be made out of a special, non-porous clay or can I use
> > anything that matures at the temperature I need to reach? Should I fire
> > the Saggar first, before using it? How do I seal the saggar to keep the
> > reduction the whole time (without creating a bomb)? Also, it would be
> best
> > if the material I'm firing didn't end up with ash residue melted to its
> > surface, so I could use some suggestions about combustible materials
(what
> > and how much).
> > If you're curious, I am heating small boxes made out of a particular
> > metal to allow the formation of a uniform magnetic dipole throughout the
> > material. The boxes will then be used to shield sensitive parts of an
> atom
> > trapping/cooling device from the strong magnetic fields created nearby.
> >
> > Keep it muddy, Tyler
.
Fredrick Paget on fri 9 jul 04
>Hi everyone,
> I have taken on a project that requires me to do a firing in an
>electric kiln, where the fired material needs to be reduced the whole time
>it's above 600 degrees fahrenheit. ...snip....
Tyler
Try looking at Dr. Malin's thesis:
http://www2.rgu.ac.uk/criad/jm_thesis.htm
I think his method using 5 percent hydrogen in nitrogen is what you
need. Any welding supply should be able to mix these gases to your
order in a tank. You can pipe the gas into a casserole with a lid
inside the kiln.
Fred
--
From Fred Paget, Marin County, California, USA
fredrick@well.com
Millard Balfrey on fri 9 jul 04
Probably the best and easiest way to go would be to go to a supplier that
supplies materials for fireplaces and purchase a section of chimney flue
material- it comes in various dimensions, 6"x6"x24", 8"x8"x24", 10"x10", 12"x12" ,
16"x16",ect. It can be cut into needed lengths with a 4" side grinder with a
diamond blade - be sure to wear goggles! Place a ring of soft clay on the kiln
shelf, set the flue liner onto the ring of clay, put your ceramic piece inside,
another ring of clay on top, then place a piece of broken kiln shelf on top.
Fill the inside void full of saw dust, leaves, iron or copper wire, salt,
baking soda ect ect. Beware of fumes, vent your kiln! Probabably not the best
thing for the kilns elements. I'm in process of same using my catenary arch
downdraft LP gas fired kiln. Look in Clay Times spring issue- Don't remember exact
date- very informative. Regards , Millard
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