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deck kilns

updated fri 16 nov 01

 

Marcia Selsor on wed 14 nov 01


dear Mel,
Noticed your mention of keeping elephants away during the firing.
I have a bonafide elephant rider coming to Italy in may!!! So, beware.
What will that do to the firings?
Marcia

mel jacobson wrote:

> hmmm, seems ok, but:
>
> if you pile that much weight on a deck..man
> you had better have big joices, lots of support
> under the deck. cinder block, brick, kiln, man that
> is heavy.
>
> i think air is the key.
> gotta get air flow.
> even a fan blowing while the kiln fires.
>
> i have 6 fans running in my kiln room.
> 1. venturi wind fan in the ceiling.
> 2. big vent fan (sucker) in the wall.
> 3. fan blowing on the ceiling.
> 4. fan blowing on the floor.
> 5. fan blowing on the stack.
> lots of air. keep it moving.
> none of this effects the firing. just the room.
> have painted all the near rafters with `fire paint`.
> (it is like how my dog keeps elephants away...not
> one in site since we got her.) same with fire paint.
> no fires in the rafters.
>
> as that texan said:
> `old tin on the wall with air space.`
> or no tin on the wall
> or some tin on the wall
> and lots of air.
> or no air.
> but, pay attention to detail.
> mel
> kiln on a wooden deck.
> takes a `pair` to do that...hope it works out.
> keep us informed...good information.
>
> From:
> Minnetonka, Minnesota, U.S.A.
> web site: http://www.pclink.com/melpots
>
> ______________________________________________________________________________
> 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.

mel jacobson on wed 14 nov 01


hmmm, seems ok, but:

if you pile that much weight on a deck..man
you had better have big joices, lots of support
under the deck. cinder block, brick, kiln, man that
is heavy.

i think air is the key.
gotta get air flow.
even a fan blowing while the kiln fires.

i have 6 fans running in my kiln room.
1. venturi wind fan in the ceiling.
2. big vent fan (sucker) in the wall.
3. fan blowing on the ceiling.
4. fan blowing on the floor.
5. fan blowing on the stack.
lots of air. keep it moving.
none of this effects the firing. just the room.
have painted all the near rafters with `fire paint`.
(it is like how my dog keeps elephants away...not
one in site since we got her.) same with fire paint.
no fires in the rafters.

as that texan said:
`old tin on the wall with air space.`
or no tin on the wall
or some tin on the wall
and lots of air.
or no air.
but, pay attention to detail.
mel
kiln on a wooden deck.
takes a `pair` to do that...hope it works out.
keep us informed...good information.


From:
Minnetonka, Minnesota, U.S.A.
web site: http://www.pclink.com/melpots

Roger Korn on thu 15 nov 01


I shoulda clarified better. The kiln is made with ITC'd fiber walls and roof, 4"
thick (too thin by the way, next time 6" - Hank knows this stuff) on about a 3'
square footprint and only weighs 200# + furniture + load. And the deck is built for
150#/sq ft. The kiln room is open when firing - tempered glass storm door rejects
at $10 apiece = fit in grooves top and bottom - just lift them out and stack
against the wall.

Moving air is the key - ceiling is 8' high with a hood that collects from the 6'
kiln stack. That baby really sucks in the ait, entrained with the kiln exhaust,
doesn't need fans. Still, the air temp around the kiln rises about 60 degrees one
foot away = the walls are too thin. But I'm going to build a 20 cubic foot version
at my new place in Arizona and do it right this time. It's a wonderful kiln - less
than 1/2 cone variation, 0 to cone 10 in 4 hours on four MR-750 venturi burners on
30 WCI natural gas, if I ever wanted to go that fast. But it cools so fast that I
have to "fire down" for a couple of hours - not too smart.
Next time...

Roger Korn
McKay Creek Ceramics
In AZ: 928-567-5699
In OR: 503-647-5464

mel jacobson wrote:

> hmmm, seems ok, but:
>
> if you pile that much weight on a deck..man
> you had better have big joices, lots of support
> under the deck. cinder block, brick, kiln, man that
> is heavy.
>
> i think air is the key.
> gotta get air flow.
> even a fan blowing while the kiln fires.
>
> i have 6 fans running in my kiln room.
> 1. venturi wind fan in the ceiling.
> 2. big vent fan (sucker) in the wall.
> 3. fan blowing on the ceiling.
> 4. fan blowing on the floor.
> 5. fan blowing on the stack.
> lots of air. keep it moving.
> none of this effects the firing. just the room.
> have painted all the near rafters with `fire paint`.
> (it is like how my dog keeps elephants away...not
> one in site since we got her.) same with fire paint.
> no fires in the rafters.
>
> as that texan said:
> `old tin on the wall with air space.`
> or no tin on the wall
> or some tin on the wall
> and lots of air.
> or no air.
> but, pay attention to detail.
> mel
> kiln on a wooden deck.
> takes a `pair` to do that...hope it works out.
> keep us informed...good information.
>
> From:
> Minnetonka, Minnesota, U.S.A.
> web site: http://www.pclink.com/melpots
>
> ______________________________________________________________________________
> 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.

Dale Cochoy on thu 15 nov 01


----- Original Message -----
From: mel jacobson
Subject: deck kilns


> hmmm, seems ok, but:
>
> if you pile that much weight on a deck..man
> you had better have big joices, lots of support
> under the deck. cinder block, brick, kiln, man that
> is heavy.
>
> i think air is the key.
> gotta get air flow.
> even a fan blowing while the kiln fires.

Mel,
Thanks,
I had intended on using a good fan to move air through the 10X12 shed. Door
on shed opens to about 5 ft BTW. Also, it IS a steel shed, I thought that
much better ( and cheaper) than wood.
Weight, well yes. But deck was built FOR the kiln. Joists are 2x10 with 2x10
spanners. , support post in middle. That SHOULD be ok.
As I asked in another post, how high would you lift it above the
cinderblocks/steel sheet with bricks.?
Thanks,
Dale