L. P. Skeen on fri 8 aug 08
Greetings fellow firefolk. My BFF is firing about a 10cubic ft. round =
kiln on an Axner conversion kit. In other words, the kiln part used to =
be electric, but she bought a gas conversion thing from Axner and has =
been firing it for a couple of months now.=20
Yesterday I was talking to her intern about glazes, and the intern has =
been looking for glazes that range from ^6 to ^10+. I tried to explain =
that glazes don't work that way, and asked her why she wants this. =
Apparently, the firings in the conversion kiln have been really uneven - =
perfect ^10 on the bottom, about 8-9 in the middle and >6 on the top. =
They have tried everything they can think of to even out the firing =
(although I have not been there, so I don't know exactly WHAT they have =
tried). =20
I'm guessing that since there is a hole in the top of the kiln, and the =
burners are in the bottom, that this is an updraft configuration, which =
is what we learned on. Any suggestions to help w/ the uneven firings =
would be appreciated.
Thanks
L
L. P. Skeen, Summerfield NC
http://www.livingtreestudios.etsy.com
www.living-tree.net
William & Susan Schran User on fri 8 aug 08
On 8/8/08 1:33 AM, "L. P. Skeen" wrote:
> I'm guessing that since there is a hole in the top of the kiln, and the
> burners are in the bottom, that this is an updraft configuration, which is
> what we learned on. Any suggestions to help w/ the uneven firings would be
> appreciated.
Have your BFF look at my web site.
There is a section on firing one of these nasty buggers (mine was an Olympic
updraft).
I describe what I did to achieve even firings top to bottom.
Bill
--
William "Bill" Schran
wschran@cox.net
wschran@nvcc.edu
http://www.creativecreekartisans.com
Rikki Gill on fri 8 aug 08
Hi All,
My Olsen updraft fired unevenly until I sprayed it with ITC several years
ago.
It has been dead even ever since.
Hope this helps.
Rikki Gill
rikigil@sbcglobal.net
www.rikkigillceramics.com
----- Original Message -----
From: "William & Susan Schran User"
To:
Sent: Friday, August 08, 2008 10:13 AM
Subject: Re: Uneven firing w/ Axner conversion kit
> On 8/8/08 1:33 AM, "L. P. Skeen" wrote:
>
>> I'm guessing that since there is a hole in the top of the kiln, and the
>> burners are in the bottom, that this is an updraft configuration, which
>> is
>> what we learned on. Any suggestions to help w/ the uneven firings would
>> be
>> appreciated.
>
> Have your BFF look at my web site.
> There is a section on firing one of these nasty buggers (mine was an
> Olympic
> updraft).
> I describe what I did to achieve even firings top to bottom.
>
> Bill
>
> --
> William "Bill" Schran
> wschran@cox.net
> wschran@nvcc.edu
> http://www.creativecreekartisans.com
Overall's on sat 9 aug 08
Hi Bill,
I took a look at your Olympic gas kiln.
I have an Olympic bell type.
It HAD a middle burner, but I took it out,
capped the pipe and carved an IFB plug to
seal the burner port.
I can now butt my kiln shelves together
for pots wider than 8" maximum width
as I had enough gas pressure to do this.
Splitting the remaining two burner port
openings with 1" wide x 6" high kiln posts:
=====
|| ||
|| ||
|| ||
to split each flame helps to even my kiln's
temperature even from top to bottom - in tandem
with using baffling top shelves just below the
damper.
I also use two IFB for dampers over each of
my exit flues. It seems to hold the reduction
atmosphere readings more steadily for me.
Kim in Houston
| |
|
