Lili Krakowski on thu 3 may 12
It's like this.
Skipping other possibilities...the floor of my Knight kiln has cracked =3D
and been patched. That is not the problem.
But I remembered I have some Kaowool left from another project.
Would it be a bad, idiotic, silly move, or a good, brilliant, clever =3D
one to take that Kaowool, lay it down on the kiln
floor--clearing the elements of course, and then set the shelf I have =3D
always used at the bottom on top of that?
Lili Krakowski
Be of good courage
Dick White on thu 3 may 12
Lili, your posts to the group are often the first I will read. I am honor=
=3D
ed
to be able to reply offer back something as an answer to your question. I=
=3D
would not set the kiln shelf on top of the kaowool for 2 reasons. First, =
=3D
it
will compress the fiber, reducing it's insulating properties, perhaps not=
=3D
by
enough to matter greatly, but it will be reduced. Second and more importa=
=3D
nt
I think, the shelf will now be supported by a somewhat compressible base =
=3D
and
might tilt if a heavier piece is loaded to one side or the other. That wi=
=3D
ll
cause all your subsequent posts and shelves to lean, possibly with
ill-consequences. But, I think you have a good idea there. Just trim a fe=
=3D
w
holes in the kaowool in appropriate strategic places, put a stubby 1-inch=
=3D
post through the hole to the brick main floor of the kiln, and rest your
bottom shelf on these short posts for solid support. The space under the
shelf still will be filled with the kaowool.=3D20
dw
Snail Scott on thu 3 may 12
On May 3, 2012, at 7:05 AM, Lili Krakowski wrote:
> Skipping other possibilities...the floor of my Knight kiln has cracked =
=3D
and been patched. That is not the problem...
> Would it be a bad, idiotic, silly move, or a good, brilliant, clever =3D
one to take that Kaowool, lay it down on the kiln
> floor--clearing the elements of course, and then set the shelf I have =3D
always used at the bottom on top of that?
I find that having a shelf directly on the kiln floor acts=3D20
as a bit of a heat sink, keeping the bottom of the kiln=3D20
cooler than the top, However, the odd habits of every=3D20
individual kiln may make that an insignificant factor,
and the kaowool could more than offset that.
I'd be more concerned that the squishiness of the=3D20
fiber blanket might make the stack of posts and=3D20
shelves less stable than they might be otherwise. A=3D20
full shelf (not a half-shelf) beneath the bottom posts=3D20
would do a lot to alleviate that, however, so I wouldn't=3D20
worry.
I expect that you might have some modest gains in=3D20
efficiency, but I doubt that the difference will be huge.=3D20
Still, go ahead and give it a try! Let us know how it=3D20
went.
My kiln floor is also quite thrashed, having entirely=3D20
collapsed into pieces when the outer banding clamp=3D20
gave way to rust. I re-fitted the pieces on top of an old=3D20
kiln lid to make a double insulated floor, and re-strapped=3D20
it with baling wire. Meant to be temporary, but it's been=3D20
over a decade now and still working fine, and the=3D20
extra floor thickness has allowed me to lower the kiln=3D20
stand more than enough to make up the difference. =3D20
The rim is now about three inches lower than it was,=3D20
and what a surprising difference that makes when=3D20
loading!
Like old cars, old kilns are sometimes just begging to=3D20
be customized. (But, if you paint hot-rod flames on your=3D20
kiln, use refractory paint!) ;)
-Snail=3D
WJ Seidl on thu 3 may 12
Ms. Lili:
At one of the NCECAs (and I forget which) I came across a gentleman from
Larkin Refractory somewhere in Georgia.
He had with him samples of kaowool sheet (not blanket, but a compressed
sheet).
I know it's not what you have at hand, but that might work better under
your shelf, as it is already compressed and should remain stable.
If what you are concerned about is the strength of the floor, I would
hazard a guess that installing a full shelf directly on the patched
floor of the kiln
(with perhaps some silica as leveling agent) would greatly increase the
strength. It would even out the load across the entire floor, not just
the points at which the kiln furniture sits.
Just my zwei mark.
Best,
Wayne Seidl
On 5/3/2012 7:32 AM, Dick White wrote:
> Lili, your posts to the group are often the first I will read. I am honor=
ed
> to be able to reply offer back something as an answer to your question. I
> would not set the kiln shelf on top of the kaowool for 2 reasons. First, =
it
> will compress the fiber, reducing it's insulating properties, perhaps not=
by
> enough to matter greatly, but it will be reduced. Second and more importa=
nt
> I think, the shelf will now be supported by a somewhat compressible base =
and
> might tilt if a heavier piece is loaded to one side or the other. That wi=
ll
> cause all your subsequent posts and shelves to lean, possibly with
> ill-consequences. But, I think you have a good idea there. Just trim a fe=
w
> holes in the kaowool in appropriate strategic places, put a stubby 1-inch
> post through the hole to the brick main floor of the kiln, and rest your
> bottom shelf on these short posts for solid support. The space under the
> shelf still will be filled with the kaowool.
>
> dw
>
>
pdp1@EARTHLINK.NET on fri 4 may 12
Hi Lili,
By your description, I am not sure I understand the concern or problem whic=
h
you would like to solve by
the use of the Kaowool.
If the Kiln Bottom had cracked and been repaired, is the repair not
satisfactory?
Are you concerned about Heat loss through the bottom? even though it has
nothing to do with the prior cracking and it's 'repair'?
If the latter, one option, would be to arrange a sheet of Kaowool to be
mechanaically
positioned up against the bottom of the Bottom, with no detracting
compression of it,
using a few cut Bricks and some expanded Metal or Hardware Cloth, and, that
would add more insulating effect, and, without any liability or displacemen=
t
or inadvertent compression or
other issues inside the Kiln.
Phil
L v
----- Original Message -----
From: "Lili Krakowski"
It's like this.
Skipping other possibilities...the floor of my Knight kiln has cracked and
been patched. That is not the problem.
But I remembered I have some Kaowool left from another project.
Would it be a bad, idiotic, silly move, or a good, brilliant, clever one t=
o
take that Kaowool, lay it down on the kiln
floor--clearing the elements of course, and then set the shelf I have alway=
s
used at the bottom on top of that?
Lili Krakowski
Be of good courage
Andy Misner on fri 4 may 12
I've been working in the refractory business for 17 years, and this will
work. for you. How bad are the cracks? I know a product that we use that =
=3D
is
good for cracks an inch or less. It's called Sparplas 85 pc. Works good, =
=3D
and
you can just thumb it in like a clay.
Andy Misner
www.indfirebrick.com
On Thu, 3 May 2012 08:05:17 -0400, Lili Krakowski =3D
T>
wrote:
>It's like this.
>
>Skipping other possibilities...the floor of my Knight kiln has cracked a=
=3D
nd
been patched. That is not the problem.
>But I remembered I have some Kaowool left from another project.
>
>Would it be a bad, idiotic, silly move, or a good, brilliant, clever on=
=3D
e
to take that Kaowool, lay it down on the kiln
>floor--clearing the elements of course, and then set the shelf I have
always used at the bottom on top of that?
>
>
>Lili Krakowski
>Be of good courage
Eleanora Eden on fri 4 may 12
Hi Lili,
I did exactly as Dick White described, some years ago, after doing it as
you first suggested and having the results he also described. I have a
good blanket of kaowool every place but where the posts rest on the bottom
of the kiln.
Now, on a different kiln, I placed slabs of 1" thick kaoboard under the kil=
n, on
top of a piece of that cement board. This worked great also to correct the
firing of a kiln that had always fired too cold on the bottom.
Best,
Eleanora
> But, I think you have a good idea there. Just trim a few
>holes in the kaowool in appropriate strategic places, put a stubby 1-inch
>post through the hole to the brick main floor of the kiln, and rest your
>bottom shelf on these short posts for solid support. The space under the
>shelf still will be filled with the kaowool.
>
>dw
--
Bellows Falls Vermont
www.eleanoraeden.com
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