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second hand kiln questions

updated tue 3 jun 03

 

Sarah Kelly on fri 30 may 03


I have a second hand kiln I got as a gift, and was wondering if it's
condition will affect firing... In transporting it, I took out all the
shelves and such, to find the bottom coating cracked and coming up... is
this fixable? also there are some chipped bricks... will I need to replace
them before firing? The good thing is, I found out the shed I'm keeping it
in was fixed up with dual 60 amp breakers with 4 guage wire. :D I'm really
anxious to get started, but want to make sure everything's not gonna break
or get destroyed in the process. :)

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Arnold Howard on fri 30 may 03


Cracks in the kiln bottom ordinarily close as the brick expands. If it
is kiln wash that is cracking, you can remove the flakes and apply a new
coat.

In most cases, you do not need to replace chipped firebricks.

People mention from time to time that they need electrical information
on Paragon's older A-series kilns. (There are still many in operation.)
I have just loaded electrical installation instructions for those kilns.
You will find them at this link:

http://www.paragonweb.com/catalog.cfm?type=manuals

Sincerely,

Arnold Howard
Paragon Industries, L.P.
www.paragonweb.com



From: Sarah Kelly
> I have a second hand kiln I got as a gift, and was wondering if it's
> condition will affect firing... In transporting it, I took out all the
> shelves and such, to find the bottom coating cracked and coming up...
is
> this fixable? also there are some chipped bricks... will I need to
replace
> them before firing?

camoore on fri 30 may 03


Hi, Arnold,

My electric kiln floor has developed some small cracks. When I first got
the kiln, I covered the bottom with a full shelf, but the cracks occurred
anyway. In fact, over time, the full shelf itself cracked, but has remained
in place.

Are you (below) suggesting that it might help to use kiln wash directly on
the bottom of the kiln floor? And then cover with kiln shelving?

Charles
Sacramento

----- Original Message -----
From: "Arnold Howard"
To:
Sent: Friday, May 30, 2003 1:46 PM
Subject: Re: second hand kiln questions


> Cracks in the kiln bottom ordinarily close as the brick expands. If it
> is kiln wash that is cracking, you can remove the flakes and apply a new
> coat.
>
> In most cases, you do not need to replace chipped firebricks.

mercy lang on fri 30 may 03


Hi Sarah- Your ceramic supplier carries a product called firebrick cement and sealer that you can you to repair firebrick. What I do is repair the brick let it dry and then kiln wash it. You only kiln wash the top of shelves and your kiln bottom. Mercy

Sarah Kelly wrote: I have a second hand kiln I got as a gift, and was wondering if it's
condition will affect firing... In transporting it, I took out all the
shelves and such, to find the bottom coating cracked and coming up... is
this fixable? also there are some chipped bricks... will I need to replace
them before firing? The good thing is, I found out the shed I'm keeping it
in was fixed up with dual 60 amp breakers with 4 guage wire. :D I'm really
anxious to get started, but want to make sure everything's not gonna break
or get destroyed in the process. :)

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http://join.msn.com/?page=features/virus

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Mercy Lang
Visit www.mercylang.com for fine art and sculpture. Jewelry for your Home!

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Snail Scott on sat 31 may 03


At 12:12 PM 5/30/03 -0400, you wrote:
>I have a second hand kiln I got as a gift...the bottom coating cracked and
coming up... is
>this fixable?

It may not matter. I doubt I'd bother, unless it was so
lumpy as to make leveling the bottom shelf difficult.
Just make sure that the kiln posts are directly over
spots supported by the kiln stand, to reduce stresses.


>...also there are some chipped bricks... will I need to replace
>them before firing?

Depends on how chipped. If they might allow the elements
to escape in big loops, maybe replace them. If it's just
small (less than 2") chips in the element channels, use
element pins. Sure, they're hard on the brick, but not
at hard as the brick-replacement process can be. Chips
anywhere else, ignore them. (And, the kilns with integral
floors are a pain in the ass for replacement of the lower
bricks.)

-Snail

Mike Gordon on sun 1 jun 03


Hi,
Another solution to an uneven floor is to put 2 half shelves,2 are
easier to remove and clean than one, on the bottom of the kiln. Mike
Gordon

Arnold Howard on mon 2 jun 03


Hi Charles,

Yes, the kiln firebrick bottom should be coated with kiln wash. If your
kiln bottom is made of ceramic fiber, the kiln wash is not necessary.

When applying kiln wash, it is very important that you protect the
elements from the kiln wash. The elements will burn out in later firings
if kiln wash splashes onto them.

I would not worry about the small cracks in the kiln bottom. They are
normal.

Sincerely,

Arnold Howard
Paragon Industries, L.P.
www.paragonweb.com





From: camoore
> My electric kiln floor has developed some small cracks. When I first
got
> the kiln, I covered the bottom with a full shelf, but the cracks
occurred
> anyway. In fact, over time, the full shelf itself cracked, but has
remained
> in place.
>
> Are you (below) suggesting that it might help to use kiln wash
directly on
> the bottom of the kiln floor? And then cover with kiln shelving?

Arnold Howard on mon 2 jun 03


If you fill in damaged areas on the kiln's firebrick bottom with kiln
repair cement, the cement will probably break out later. I suggest that
you mix the cement 1:1 with powdered firebrick.

Sincerely,

Arnold Howard
Paragon Industries, L.P.
www.paragonweb.com



----- Original Message -----
From: mercy lang
To:
Sent: Friday, May 30, 2003 5:10 PM
Subject: Re: [CLAYART] second hand kiln questions


> Hi Sarah- Your ceramic supplier carries a product called firebrick
cement and sealer that you can you to repair firebrick. What I do is
repair the brick let it dry and then kiln wash it. You only kiln wash
the top of shelves and your kiln bottom. Mercy
>
> Sarah Kelly wrote: I have a second hand
kiln I got as a gift, and was wondering if it's
> condition will affect firing... In transporting it, I took out all the
> shelves and such, to find the bottom coating cracked and coming up...
is
> this fixable? also there are some chipped bricks... will I need to
replace
> them before firing? The good thing is, I found out the shed I'm
keeping it
> in was fixed up with dual 60 amp breakers with 4 guage wire. :D I'm
really
> anxious to get started, but want to make sure everything's not gonna
break
> or get destroyed in the process. :)
>
> _________________________________________________________________
> MSN 8 with e-mail virus protection service: 2 months FREE*
> http://join.msn.com/?page=features/virus
>
>
________________________________________________________________________
______
> 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.
>
>
>
> Mercy Lang
> Visit www.mercylang.com for fine art and sculpture. Jewelry for your
Home!
>
> ---------------------------------
> Do you Yahoo!?
> Free online calendar with sync to Outlook(TM).
>
>
________________________________________________________________________
______
> 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.