steve graber on tue 4 apr 06
i did exactly the same thing about 9 years ago to my cress 27 kiln. i've been using an octagon shelf all these years. i have no idea what this has done to the efficiency of the kiln, but the apparent price of firing never changed of note. i've done many firing since that 1st mess, and it seems to work well for me.
see ya
steve
Teri Williams wrote:
I melted a couple of blobs onto the floor of my electric and successfully
removed all the clay but unsuccessfully dug some deep valleys into
it...not completely through it but worried about it being level.
If I just place a full octangle shelf on top, will that insulate enough to
keep the heat in? Or...should I cement the holes, then place the shelf
there...or is there a compound I can use to just glaze over the holes and
make it level? I've read that the usual kiln cement will crack.
Any suggestions?
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Teri Williams on tue 4 apr 06
I melted a couple of blobs onto the floor of my electric and successfully
removed all the clay but unsuccessfully dug some deep valleys into
it...not completely through it but worried about it being level.
If I just place a full octangle shelf on top, will that insulate enough to
keep the heat in? Or...should I cement the holes, then place the shelf
there...or is there a compound I can use to just glaze over the holes and
make it level? I've read that the usual kiln cement will crack.
Any suggestions?
Ron Roy on wed 5 apr 06
Hi Teri,
Overfill with half kaolin and half grog and as little water as possible -
rub level when dry - that all you need to do. Kiln wash the floor to help
protect it.
Kiln wash and grog will work as well.
I would recommend a shelf on the bottom to take the weght of the stacking.
RR
>I melted a couple of blobs onto the floor of my electric and successfully
>removed all the clay but unsuccessfully dug some deep valleys into
>it...not completely through it but worried about it being level.
>
>If I just place a full octangle shelf on top, will that insulate enough to
>keep the heat in? Or...should I cement the holes, then place the shelf
>there...or is there a compound I can use to just glaze over the holes and
>make it level? I've read that the usual kiln cement will crack.
>
>Any suggestions?
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Arnold Howard on wed 5 apr 06
----- Original Message -----
From: "Teri Williams"
>I melted a couple of blobs onto the floor of my
>electric and successfully
> removed all the clay but unsuccessfully dug some
> deep valleys into
> it...not completely through it but worried about it
> being level.
If the gouges in the firebrick bottom are minor, I
would leave them alone. Use a 1:1 mixture of kiln
repair cement and firebrick powder to fill gouges.
A few weeks ago I experimented with kiln wash by
overfiring a glass bottle across two firebricks. One
was coated with kiln wash, and the other was bare. I
have posted a photo of the results here:
http://www.paragonweb.com/Kiln_Pointer.cfm?PID=164
Sincerely,
Arnold Howard
Paragon Industries, L.P., Mesquite, Texas USA
ahoward@paragonweb.com / www.paragonweb.com
Rogier Donker on thu 6 apr 06
Teri,
After you dig out all the lava and have this deep ugly hole in the
floor of the kiln: fill it up with an aggregate of broken bits and
pieces of soft kiln brick(K26) and kiln cement. Let it dry
thoroughly, then cover with kiln wash. Fire your kiln as per normal.
Placing a shelf on the floor of the kiln is ALWAYS a good idea. See
my web site under KILN REPAIR.
Rogier
See us on the web at http://www.donkerstudio.org
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