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kiln cement

updated fri 27 jun 03

 

EDWIN GOULD on thu 18 jun 98

Is it best to avoid cement (furnace crete etc) to seal leaks in the
chimney or box of my 20 cubic ft. downdraft kiln or better to use wool
insulation material? We have not put in the arch yet...so we are a long
way from the first firing but wondering early.
thanks again for the abundant help y'll.
ed gould

EDWIN GOULD on fri 19 jun 98

Is it best to avoid cement (furnace crete etc) to seal leaks in the
chimney or box of my 20 cubic ft. downdraft kiln or better to use wool
insulation material? We have not put in the arch yet...so we are a long
way from the first firing but wondering early.
thanks again for the abundant help y'll.
ed gould

Jim &Lisa Blake on fri 23 apr 99

I'm hoping to successfully use Amaco Kiln Cement on my
Bailey electric kiln which has circular cracks in the lid.
Has anyone used this stuff before with luck?
My concern is that the cement will begin to
flake off into the pots during the firing.

natalie , Putney, Vermont

Robert Huskey on wed 25 jun 03


I need to re- mortar an electric kiln lid . I've noticed when looking on the
web for kiln cements that many have the admonition : don't use on lids.
Does anyone have a good one to suggest ?


Bob Huskey - Tallahassee,Florda

Donald Burroughs on thu 26 jun 03


Hi Robert
I have used ceraset on my lid. Remove the lid from the hinges on the kiln.
Soak(hose down) the lid with water then apply the ceraset. The shrinkage
will then not be so dramatic. When the ceraset has shrunk somewhat durring
the cure add more to make up for the shrink.Now here is the trick. Fire the
lid with the unfired ceraset face up (not down)and then place soft brick on
top of the repaired side fire to your glaze temp (mine is cone 6). Your lid
is now repaired. Mine has never had any fall out.
Sincerely, Donald Burroughs

Roger Korn on thu 26 jun 03


Hi Folks,



Donald Burroughs wrote:

>Hi Robert
>I have used ceraset on my lid.
>
Having recently beaten around this bush, I presume you mean the AP
Green/HW/RHI (or whoever they are this week) product
called 'sairset.

>Remove the lid from the hinges on the kiln.
>Soak(hose down) the lid with water then apply the ceraset. The shrinkage
>will then not be so dramatic. When the ceraset has shrunk somewhat durring
>the cure add more to make up for the shrink.Now here is the trick. Fire the
>lid with the unfired ceraset face up (not down)and then place soft brick on
>top of the repaired side fire to your glaze temp (mine is cone 6).
>
Is the idea here to get the coated surface up to temperature so that
heat curing happens? Perhaps covering with
an inch or two of ceramic fiber, then fiberglass building insulation
would achieve a higher temp.

>Your lid
>is now repaired. Mine has never had any fall out.
>
Another material recommended for this purpose (thanks, Arnold) has been
BNZ 2986 refractory mortar. Haven't tried
it yet, but I'll post results when I have done so.

Roger

>Sincerely, Donald Burroughs
>
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Roger Korn
McKay Creek Ceramics
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