Fabienne Micheline Cassman on sat 18 aug 01
Greetings :)
I have decide to put fiber on the inside of the kiln lid for added
insulation. However, I am faced with an unresolved issue. Which type to
get? Everyone says ThermalCeramics' Kaowool, but when I looked it up, it
just doesn't cut it as the continuous use limit is 2000oF. I will fire to
cone 9 which is well above that. I have a couple of alternative, but both
pose a problem. For the first, I don't have an answer and for the second,
I can't find a supplier.
1- There are two "classes" of fibers out there, so to speak. Those listed
at 2300oF/1260oC and those listed at 2600oF/1425oC. The 2300 type is
typically listed as stable around 2150oF when fired continuously at that
temperature. The products that fall under that category are Unifrax's
Fiberfrax Duraboard 2300 or Durablanket 2300, OR ThermalCeramics'
Cerablanket, OR APGreen's Insboard 2300, OR finally Superwool 607 MAX.
Now, would spraying any of these lower stability products with ITC increase
their performace? Anyone with opinions and/or experience with this?
2- The second type is the 2600 type which is stable well above that and
includes the following products: Unifrax's Fiberfrax Duraboard 2600 or
Durablanket 2600, OR ThermalCeramics' Cerachem, OR APGreen's Insboard
2600. I am having a hard time finding these products in small quantity
though; everyone wants to sell me at least a whole box or roll. My local
supplier doesn't carry fiber. Who carries some and is willing to sell it
in small quantity? Should I bother spraying it with ITC if just to keep it
together better?
Thank you,
Fabienne who is going to have a mean lean kiln machine when done
FYI Links:
http://www.thermalceramics.com/literature/datasheets.asp
http://www.unifrax.com/Products
http://www.spi-co.com/MechProduct.mv for insboard 2300 & 2600 data sheet
APGreen has been bought out by Harbison Walker Refractories - no web site
to be found
--
Milky Way Ceramics http://www.milkywayceramics.com/
Yes, I have learned from my mistakes...
I can reproduce them exactly.
Fraser Forsythe on sun 19 aug 01
I have build a small fibre kiln that I take to cone 6 - 8. My understanding of
fibre and firing ranges is in terms of fibre density. I have been advised that 6lb
(density) is ok for Raku 012-06 and 8lb should handle up to cone 10 or 11.
The notion of coating the inside of the kiln fibre with some coating makes sense
and to that end I've been developing my own coating (more like a cement). I've yet
to tear apart my kiln floor and check the condition of the fibre that was protected
behind the coating. Sound idea though.
I have used a company (spin off of AP Green - or replacement) called Air Heat
Supplies. 1-800-361-4652. This is in Mississauga, Canada. They also sell something
called SairSet Cement. Haven't tried it (yet), and at $43.00\20kg its pretty cheap.
Sorry, but you wont find anyone that will sell you a piece of fibre. Probably
because no one wants to 'handle' the stuff.
I do believe that you can do some really great stuff with fibre but more research
has to be done, regarding both firing and health issues.
Fraser Forsythe
fraser@glazeexchange.com
Fabienne Micheline Cassman wrote:
> Greetings :)
>
> I have decide to put fiber on the inside of the kiln lid for added
> insulation. However, I am faced with an unresolved issue. Which type to
> get? Everyone says ThermalCeramics' Kaowool, but when I looked it up, it
> just doesn't cut it as the continuous use limit is 2000oF. I will fire to
> cone 9 which is well above that. I have a couple of alternative, but both
> pose a problem. For the first, I don't have an answer and for the second,
> I can't find a supplier.
>
> 1- There are two "classes" of fibers out there, so to speak. Those listed
> at 2300oF/1260oC and those listed at 2600oF/1425oC. The 2300 type is
> typically listed as stable around 2150oF when fired continuously at that
> temperature. The products that fall under that category are Unifrax's
> Fiberfrax Duraboard 2300 or Durablanket 2300, OR ThermalCeramics'
> Cerablanket, OR APGreen's Insboard 2300, OR finally Superwool 607 MAX.
>
> Now, would spraying any of these lower stability products with ITC increase
> their performace? Anyone with opinions and/or experience with this?
>
> 2- The second type is the 2600 type which is stable well above that and
> includes the following products: Unifrax's Fiberfrax Duraboard 2600 or
> Durablanket 2600, OR ThermalCeramics' Cerachem, OR APGreen's Insboard
> 2600. I am having a hard time finding these products in small quantity
> though; everyone wants to sell me at least a whole box or roll. My local
> supplier doesn't carry fiber. Who carries some and is willing to sell it
> in small quantity? Should I bother spraying it with ITC if just to keep it
> together better?
>
> Thank you,
>
> Fabienne who is going to have a mean lean kiln machine when done
>
> FYI Links:
> http://www.thermalceramics.com/literature/datasheets.asp
> http://www.unifrax.com/Products
> http://www.spi-co.com/MechProduct.mv for insboard 2300 & 2600 data sheet
> APGreen has been bought out by Harbison Walker Refractories - no web site
> to be found
> --
> Milky Way Ceramics http://www.milkywayceramics.com/
>
> Yes, I have learned from my mistakes...
> I can reproduce them exactly.
>
> ______________________________________________________________________________
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>
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>
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--
Fraser Forsythe
www.glazeexchange.com
fraser@glazeexchange.com
fraserforsythe@icqmail.com
icq# 56080709
Tony Ferguson on sun 19 aug 01
Hi,
You would want an 8 pound density fiber blanket.
There is a 10# but hard to find. I built a raku kiln
out of 8 pound den. 2 inches thick-it will got to cone
10 as well. I am currently working on a Fiber Anagama
research project with Smith Sharp out of
Minneapolis--they are an AP green dealer. They have a
competitive ITC product that is a 95% zirconium
silicate--spray on, protect, like that. (5%
binder--if too thick it will flake off--they rec. to
spray. Any more questions about particulars, e me.
Tony Duluth, MN
=====
--Tony Ferguson, fergyart@yahoo.com(218) 727-6339Looking to see, buy or barter artwork go to:http://www.geocities.com/fergyart/fergyartmainpage.html
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