Bunny Lemak on tue 27 feb 07
This is the second time this has happened and I am beginning to worry
about my kiln. We have checked both the elements & wiring and it looks
fine.
I use an eletronic Skutt.
Clay: Laguna Dover White ^5
In bisque fire only (cone 04): When it is nearly finished - about 1900 it
starts smoking like it is on fire. White smoke comes out of the kiln and
fills up our garage! Yikes!
I have fired the kiln to ^5 and it does not smoke - only during the bisque
fire.
First time we thought some dust or maybe bugs were in kiln - no, no
residue. This time it is the same thing, kiln fires correctly, no errors;
bisque looks perfect, nothing on shelves, but lots of smoke in garage.
So...could it possibly be the clay??? When I unload the kiln my hands are
covered in white powder, but wouldn't this burn off at a lower temp
instead of the high? Or...if it is the clay why is it not doing this
during the cone 5 firing only the cone 04????
I'm confused & worried - don't know what is going on and I really don't
want to burn down the garage, 2 cars and of course all my work!!
Any suggestions on this??
Bunny
Michael Wendt on tue 27 feb 07
Bunny,
You need a kiln vent.
The smoke is characteristic of
clays containing ball clay which
is high in organics.
These burn out in the bisque
so you don't see them at the cone
5 firing.
In the extreme, it is a nuisance that
can easily be solved with a kiln vent.
Regards,
Michael Wendt
Wendt Pottery
2729 Clearwater Ave
Lewiston, ID 83501
USA
208-746-3724
http://www.wendtpottery.com
wendtpot@lewiston.com
Bunny wrote:
This is the second time this has happened and I am
beginning to worry
about my kiln. We have checked both the elements &
wiring and it looks
fine.
I use an electronic Skutt.
Clay: Laguna Dover White ^5
In bisque fire only (cone 04): When it is nearly
finished - about 1900 it
starts smoking like it is on fire. White smoke comes
out of the kiln and
fills up our garage! Yikes!
I have fired the kiln to ^5 and it does not smoke -
only during the bisque
fire.
First time we thought some dust or maybe bugs were in
kiln - no, no
residue. This time it is the same thing, kiln fires
correctly, no errors;
bisque looks perfect, nothing on shelves, but lots of
smoke in garage.
So...could it possibly be the clay??? When I unload
the kiln my hands are
covered in white powder, but wouldn't this burn off at
a lower temp
instead of the high? Or...if it is the clay why is it
not doing this
during the cone 5 firing only the cone 04????
I'm confused & worried - don't know what is going on
and I really don't
want to burn down the garage, 2 cars and of course all
my work!!
Any suggestions on this??
Bunny
Lisa E on tue 27 feb 07
Bunny;
Are you leaving the top peep hole(s) open for venting??
Lisa
On 2/27/07, Bunny Lemak wrote:
>
> This is the second time this has happened and I am beginning to worry
> about my kiln. We have checked both the elements & wiring and it looks
> fine.
>
> I use an eletronic Skutt.
>
> Clay: Laguna Dover White ^5
>
> In bisque fire only (cone 04): When it is nearly finished - about 1900 it
> starts smoking like it is on fire. White smoke comes out of the kiln and
> fills up our garage! Yikes!
>
> I have fired the kiln to ^5 and it does not smoke - only during the bisque
> fire.
>
> First time we thought some dust or maybe bugs were in kiln - no, no
> residue. This time it is the same thing, kiln fires correctly, no errors;
> bisque looks perfect, nothing on shelves, but lots of smoke in garage.
>
> So...could it possibly be the clay??? When I unload the kiln my hands are
> covered in white powder, but wouldn't this burn off at a lower temp
> instead of the high? Or...if it is the clay why is it not doing this
> during the cone 5 firing only the cone 04????
>
> I'm confused & worried - don't know what is going on and I really don't
> want to burn down the garage, 2 cars and of course all my work!!
>
> Any suggestions on this??
>
> Bunny
>
>
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>
--
Lisa E
Sunny Daze Design Pottery Studio
SunnyDazeDesign@gmail.com
Squamish, BC Canada
www.lisaelbertsen.com http://picasaweb.google.com/SunnyDazeDesign
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