Larry Kruzan on mon 17 jan 11
Hey Gang,
I have the need to cast some parts of an experimental kiln that I'm
currently for planning spring/summer. This kiln will have several areas
that must be cast since not "off the shelf" components exist for them. But =
I
don't have a formula for a good castable mix.
If it matters, it kiln will be fired to cone 10-12 and will be wood fired.
The cast parts will be in direct flame contact.
I have a lot of broken IFB's that I've been grinding up that can go into th=
e
mix if that helps and I have about a pallet of firclay, and about ton or tw=
o
of clay scraps - apart from normal potter materials.
Larry Kruzan
Lost Creek Pottery
www.lostcreekpottery.com
Paul Herman on mon 17 jan 11
Hi Larry,
A friend just used this formula to build the main body and arch of a
wood fired kiln in Alturas, California.
By volume:
1.25 parts alumina cement
2 parts fireclay
2 parts kyanite(mullite)
1 part sand
4 parts diatomaceous earth(absorbite)
The addition of the diatomaceous earth makes it an insulating castable.
Keep in mind that when you crush IFB it will lose almost all of it's
insulating qualities.
good firings,
Paul Herman
Great Basin Pottery
Doyle, California US
www.greatbasinpottery.com/
On Jan 17, 2011, at 6:41 AM, Larry Kruzan wrote:
> Hey Gang,
>
>
>
> I have the need to cast some parts of an experimental kiln that I'm
> currently for planning spring/summer. This kiln will have several
> areas
> that must be cast since not "off the shelf" components exist for
> them. But I
> don't have a formula for a good castable mix.
>
>
>
> If it matters, it kiln will be fired to cone 10-12 and will be wood
> fired.
> The cast parts will be in direct flame contact.
>
>
>
> I have a lot of broken IFB's that I've been grinding up that can go
> into the
> mix if that helps and I have about a pallet of firclay, and about
> ton or two
> of clay scraps - apart from normal potter materials.
>
>
>
> Larry Kruzan
>
> Lost Creek Pottery
>
> www.lostcreekpottery.com
Steve Mills on mon 17 jan 11
P.S. we always added a small percentage of fine sawdust to the mix to incre=
a=3D
se insulation properties
Steve Mills
Bath
UK
Sent from my Itouch
On 17 Jan 2011, at 14:41, Larry Kruzan wrote:
>=3D20
Steve Mills on mon 17 jan 11
Larry,=3D20
Over here I have used crushed IFBs, sand or Grog, and fast setting High Alu=
m=3D
ina Cement, known over here as either Ciment Fondu or Lightning Cement for =
c=3D
asting pieces for a Kiln. I suspect the name may be different in your part =
o=3D
f the world, but the function will be the same.=3D20
I would be interested to know what it's called for future reference; I'm pa=
r=3D
t of an ongoing project in SC which I will be with before NCECA.=3D20
Steve M
Steve Mills
Bath
UK
Sent from my Itouch
On 17 Jan 2011, at 14:41, Larry Kruzan wrote:
> Hey Gang,
>=3D20
>=3D20
>=3D20
> I have the need to cast some parts of an experimental kiln that I'm
> currently for planning spring/summer. This kiln will have several areas
> that must be cast since not "off the shelf" components exist for them. Bu=
t=3D
I
> don't have a formula for a good castable mix.
>=3D20
>=3D20
>=3D20
> If it matters, it kiln will be fired to cone 10-12 and will be wood fire=
d=3D
.
> The cast parts will be in direct flame contact.
>=3D20
>=3D20
>=3D20
> I have a lot of broken IFB's that I've been grinding up that can go into =
t=3D
he
> mix if that helps and I have about a pallet of firclay, and about ton or =
t=3D
wo
> of clay scraps - apart from normal potter materials.
>=3D20
>=3D20
>=3D20
> Larry Kruzan
>=3D20
> Lost Creek Pottery
>=3D20
> www.lostcreekpottery.com
Bob Seele on mon 17 jan 11
On Jan 17, 2011, at 1:40 PM, Steve Mills wrote:
Over here I have used crushed IFBs, sand or Grog, and fast setting
High Alumina Cement, known over here as either Ciment Fondu or
Lightning Cement for casting pieces for a Kiln. I suspect the name may
be different in your part of the world, but the function will be the
same.
I would be interested to know what it's called for future reference;
I'm part of an ongoing project in SC which I will be with before NCECA.
Ciment Fondu is available here. The last time I tried to purchase
some, I was told they only sell in pallet lots.
I was able to get "Luminate MG4" by the bag.
From "Willkommen bei CALUCEM"
http://www.hca.com/index.php?id=3D2&L=3D0
They are close to the same thing.
bob seele
ivor and olive lewis on tue 18 jan 11
Dear Larry Kruzan,
Since firing a potter's kiln is a cyclic process it is important to avoid
using any material that may contain free silica. Even crystalline quartz
will eventually fail when subjected to repeated transition through its phas=
e
changes.
If you intend to use Fireclay ask about its mineral content and determine
the composition of any sand you introduce into your mix.
Regards,
Ivor Lewis,
REDHILL,
South Australia
douglas fur on thu 20 jan 11
This is a secondary question about Aluninous cement-
My local masonry supply sells "White Portland Cement". I assume (remember
the old saw about how to spell assume?) that means it's low in iron and
Higher in Al2O3.
I find this tempting to try. Has anyone succombed to this temptation and
how did it turn out?
DRB
Seola Creek
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