Jeff Guin on tue 15 nov 05
Firebrick question to my fellow ClayArters. I have the opportunity to buy
some fire brick for 50 cents a piece from a local construction company. All
they can tell me is that the brick is called "High-Temp" fire brick, is used
to build chimney fire boxes and can take direct heat well over 2400 degrees.
He also said he had some "Super High-Temp" that he'd sell for a buck a
brick. Could the merchant be mistakenly refering to "Super Duty" and "High
Duty" firebrick as catagorized by The American Society for Testing and
Materials? I would like to build a kiln and could sure use a deal like this
one. Any advice?
Thanks.
Jeff Guin
http://mudwerks.blogspot.com
http://www.flickr.com/photos/mudhead99/
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Paul Herman on tue 15 nov 05
Jeff,
My advice is to buy them. New bricks of any kind are "expensive"
these days.
Best,
Paul Herman
Great Basin Pottery
Doyle, California US
http://greatbasinpottery.com
On Nov 15, 2005, at 12:19 PM, Jeff Guin wrote:
> I would like to build a kiln and could sure use a deal like this
> one. Any advice?
> Thanks.
> Jeff Guin
David Hendley on tue 15 nov 05
Well, who knows what the bricks are unless they are stamped with
a name.
Generally, firebricks used by construction companies to build home
fireplaces are low duty firebricks and just marginally suitable for
stoneware kilns. Such "fireplace bricks" I have also found to be less
dimensionally precise than good quality kiln bricks, which can make
them harder to lay without mortar.
I suggest you try to get more reliable printed specifications.
David Hendley
I don't know nothin' but the blues, cobalt that is.
david@farmpots.com
http://www.farmpots.com
----- Original Message -----
> Firebrick question to my fellow ClayArters. I have the opportunity to buy
> some fire brick for 50 cents a piece from a local construction company.
> All
> they can tell me is that the brick is called "High-Temp" fire brick, is
> used
> to build chimney fire boxes and can take direct heat well over 2400
> degrees.
> He also said he had some "Super High-Temp" that he'd sell for a buck a
> brick. Could the merchant be mistakenly refering to "Super Duty" and
> "High
> Duty" firebrick as catagorized by The American Society for Testing and
> Materials? I would like to build a kiln and could sure use a deal like
> this
> one. Any advice?
> Thanks.
> Jeff Guin
steve baker on wed 16 nov 05
I used to work for Resco (refractories) and if I remember correctly, anything that fired white or buff was "good enough" for a fireplace brick. I would be careful, especially of older stock. I also know that "bloating" type brick from New Cumberland, WV were used as fireplace brick, and I don't think you want a bloater in a kiln. Fireplace brick see such limited heat exposure that high duty, etc. is probably overkill. You probably just don't want earthenware or red brick in a fireplace. There are also limited markets these days for anything but higher heat duty brick, so anything new may be more than adequate.
Jeff Guin wrote: Firebrick question to my fellow ClayArters. I have the opportunity to buy
some fire brick for 50 cents a piece from a local construction company. All
they can tell me is that the brick is called "High-Temp" fire brick, is used
to build chimney fire boxes and can take direct heat well over 2400 degrees.
He also said he had some "Super High-Temp" that he'd sell for a buck a
brick. Could the merchant be mistakenly refering to "Super Duty" and "High
Duty" firebrick as catagorized by The American Society for Testing and
Materials? I would like to build a kiln and could sure use a deal like this
one. Any advice?
Thanks.
Jeff Guin
http://mudwerks.blogspot.com
http://www.flickr.com/photos/mudhead99/
_________________________________________________________________
On the road to retirement? Check out MSN Life Events for advice on how to
get there! http://lifeevents.msn.com/category.aspx?cid=Retirement
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Louis Katz on wed 16 nov 05
I am considering building a soda kiln from similar brick. Cone 6
i would
take a brick. measure it carefully. put it in the kiln on the 2.5 x 9
inch face.
Stack on more brick on top of it turned 90 degrees so that looking down
you see an X from the two bricks.
Then I would stack another four brick on top.
At the very least you should see no deformation of the bottom brick and
very close to no shrinkage.
I might be tempted to try this several times and would make sure the
brick is exposed to full heat and reduction.
Then I would ask is skimping on bricks is worth your time and money. If
gas is an issue.
If you are not firing with wood soda and salt you would be better off
with softbrick if you are going to fire much at all. An if you are
going to fire salt or soda it will take a lot of firings to really test
the brick.
Remember if pots are art, so are bricks.
Louis
> Any advice?
> Thanks.
> Jeff Guin
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