Url Krueger on fri 13 jan 12
Most people seem to recommend hard brick
over IFB for the floor of a gas kiln. I believe
this is to provide abrasion resistance.
But thick hard brick will soak up a lot of heat
and there will be a lot of joints, possibly uneven.
Wouldn't mullite kiln shelves work better?
Less mass and larger spans between joints.
What do you think?
Thanks...
earl...
Enjoying a glorious sunny day in Oregon.
brandon2@SUPPORTYOURLOCALPOTTER.COM on fri 13 jan 12
When I build kilns I place hard brick under where the post load will be
and where ever someone might be standing/sitting/leaning. Although if
you're actually spending time inside the kiln I think hard brick with soft
underneath is the way to go. If you're wearing on the brick you're gonna
end up with lots of dust and crumblies in the kiln. You could also get
hardbrick tile in various sizes, it would be thinner and have a little
less mass as well as covering larger areas. I think it would be stronger
than kiln shelves if you need to stand/sit on them.
Brandon Phillips
supportyourlocalpotter.blogspot.com
> Most people seem to recommend hard brick
> over IFB for the floor of a gas kiln. I believe
> this is to provide abrasion resistance.
>
> But thick hard brick will soak up a lot of heat
> and there will be a lot of joints, possibly uneven.
>
> Wouldn't mullite kiln shelves work better?
> Less mass and larger spans between joints.
>
> What do you think?
>
> Thanks...
>
> earl...
> Enjoying a glorious sunny day in Oregon.
>
Nefsigh@AOL.COM on fri 13 jan 12
Seems like a lot of worrying over really small stuff. A seam is just a
pre-determined crack. As to kilns and floors-I have built dozens of salt, w=
ood
and reduction kilns and have always used a hard brick floor. Sure, they
absorb a bit more heat before kicking it back, but they also hold heat and
slow down your cooling--which isn't a bad thing. Most folks I have met tha=
t
needed repairs have needed them as a result of skimping on the floors and
opening kilns too soon-- (of course poor arch building has been another is=
sue
I have had to repair for folks too)
Anyway, the costs will be nominal in the long run and your kiln will hold
up longer.
Go with hard bricks and be done.
Good firings
Lenny Dowhie
Professor of Art, Emeritus
University of Southern Indiana
In a message dated 1/13/2012 5:04:17 P.M. Central Standard Time,
brandon2@SUPPORTYOURLOCALPOTTER.COM writes:
When I build kilns I place hard brick under where the post load will be
and where ever someone might be standing/sitting/leaning. Although if
you're actually spending time inside the kiln I think hard brick with sof=
t
underneath is the way to go. If you're wearing on the brick you're gonna
end up with lots of dust and crumblies in the kiln. You could also get
hardbrick tile in various sizes, it would be thinner and have a little
less mass as well as covering larger areas. I think it would be stronger
than kiln shelves if you need to stand/sit on them.
Brandon Phillips
supportyourlocalpotter.blogspot.com
> Most people seem to recommend hard brick
> over IFB for the floor of a gas kiln. I believe
> this is to provide abrasion resistance.
>
> But thick hard brick will soak up a lot of heat
> and there will be a lot of joints, possibly uneven.
>
> Wouldn't mullite kiln shelves work better?
> Less mass and larger spans between joints.
>
> What do you think?
>
> Thanks...
>
> earl...
> Enjoying a glorious sunny day in Oregon.
>
Larry Kruzan on fri 13 jan 12
I like to have that heavy, thick, hard brick floor to help slow down the
cooling cycle. My floors are (from bottom up) 1/4" steel plate, a layer of
tile backer board, two layers of IFBs and the top layer of hard brick. The
1/4" steel plate is overkill, but I have a lot of it and not too much 1/8"
plate which would be a good size depending on the framing under it.
Larry Kruzan
Lost Creek Pottery
-----Original Message-----
From: Clayart [mailto:Clayart@LSV.CERAMICS.ORG] On Behalf Of Url Krueger
Sent: Friday, January 13, 2012 2:21 PM
To: Clayart@LSV.CERAMICS.ORG
Subject: Hard brick or kiln shelf for kiln floor
Most people seem to recommend hard brick over IFB for the floor of a gas
kiln. I believe this is to provide abrasion resistance.
But thick hard brick will soak up a lot of heat and there will be a lot of
joints, possibly uneven.
Wouldn't mullite kiln shelves work better?
Less mass and larger spans between joints.
What do you think?
Thanks...
earl...
Enjoying a glorious sunny day in Oregon.
Steve Mills on sat 14 jan 12
That's what I do in any Kiln Url.
Best
Steve M
Steve Mills
Bath
UK
Sent from my iPod
On 13 Jan 2012, at 20:21, Url Krueger wrote:
> Most people seem to recommend hard brick
> over IFB for the floor of a gas kiln. I believe
> this is to provide abrasion resistance.
>
> But thick hard brick will soak up a lot of heat
> and there will be a lot of joints, possibly uneven.
>
> Wouldn't mullite kiln shelves work better?
> Less mass and larger spans between joints.
>
> What do you think?
>
> Thanks...
>
> earl...
> Enjoying a glorious sunny day in Oregon.
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