Melinda Collins on sun 27 sep 09
I would appreciate some input with an issue we are having in the co-op
studio.
One potter cuts up 1/2 inch pieces of bamboo skewers, approximately
60-100-which fill drilled holes around the edge of the pot to keep the glaz=
e
from filling the holes the size of the bamboo skewers.
Cone 6 electric glaze firing with other people's work included.
THE QUESTION: Does it harm the vented kiln, the shelf or other people's
work to have them burn out in place within the kiln? Some are saying that
she cannot fire them. Potter in question says that she will not remove
them, and so some are saying it is not good firing practice to leave them
in.
Please offer opinions based on your experience to settle this argument. Sh=
e
does not do enough work to fill the kiln alone. Thanks so much....know I
can count on you! Melinda
--
Small Work-No Apologies
Melinda Collins, Kerrville Texas
http://web.me.com/melindacollins/
gary navarre on tue 29 sep 09
I guess, Malinda, it depends on what one would consider harm because folks=
=3D
have been inserting sticks into electric spy holes for a long time to get =
=3D
reduction effects. The elements can take more of a beating but that would b=
=3D
e much less at ^6. The real amount of wood you say is about 4 to 6 chop sti=
=3D
cks cut in =3DBD" pieces which isn't much. I'd be surprised if there will b=
e =3D
much reduction so glazes won't be much more interesting.=3D0A=3D0A One prob=
lem =3D
I'd watch for though is the pieces with sticks in them might crack around t=
=3D
he hole if the clay fire shrinks before the stick burns out. Filling the ho=
=3D
le with wax resist and using a stiffer glaze would keep glaze out of the ho=
=3D
le. With real careful glazing the hole can be glazed through and not plug a=
=3D
fter firing as long as it is not too runny.=3D0A=3D0AGary Navarre=3D0ANavar=
re Pot=3D
tery=3D0ANavarre Enterprises=3D0ANorway, Michigan, USA=3D0Ahttp://www.youtu=
be.com=3D
/GindaUP=3D0Ahttp://public.fotki.com/GindaUP/=3D0A=3D0A=3D0A--- On Sun, 9/2=
7/09, Me=3D
linda Collins wrote:=3D0A=3D0A> From: Melinda Coll=
ins =3D
=3D0A> Subject: [Clayart] Wood issue in Electric Ki=
ln=3D
-a question for all=3D0A> To: Clayart@LSV.CERAMICS.ORG=3D0A> Date: Sunday, =
Sept=3D
ember 27, 2009, 5:17 PM=3D0A> I would appreciate some input with an=3D0A> i=
ssue=3D
we are having in the co-op=3D0A> studio.=3D0A> One potter cuts up 1/2 inch=
pie=3D
ces of bamboo skewers,=3D0A> approximately=3D0A> 60-100-which fill drilled =
hole=3D
s around the edge of the pot=3D0A> to keep the glaze=3D0A> from filling the=
hol=3D
es the size of the bamboo skewers.=3D0A> =3D0A> Cone 6 electric glaze firin=
g wi=3D
th other people's work=3D0A> included.=3D0A> =3D0A> THE QUESTION:=3DA0 Does=
it harm=3D
the vented kiln, the shelf=3D0A> or other people's=3D0A> work to have them=
bur=3D
n out in place within the kiln?=3DA0=3D0A> Some are saying that=3D0A> she c=
annot =3D
fire them.=3DA0 Potter in question says that=3D0A> she will not remove=3D0A=
> them=3D
, and so some are saying it is not good firing practice=3D0A> to leave them=
=3D
=3D0A> in.=3D0A> Please offer opinions based on your experience to settle=
=3D0A> t=3D
his argument.=3DA0 She=3D0A> does not do enough work to fill the kiln=3D0A>=
alone=3D
.=3DA0=3DA0=3DA0Thanks so much....know I=3D0A> can count on you!=3DA0=3DA0=
=3DA0Melinda=3D0A=3D
> =3D0A> --=3D0A> Small Work-No Apologies=3D0A> Melinda Collins, Kerrville =
Texas=3D
=3D0A> http://web.me.com/melindacollins/=3D0A> =3D0A=3D0A=3D0A
John Hesselberth on tue 29 sep 09
On Sep 27, 2009, at 6:17 PM, Melinda Collins wrote:
> THE QUESTION: Does it harm the vented kiln, the shelf or other
> people's
> work to have them burn out in place within the kiln? Some are
> saying that
> she cannot fire them. Potter in question says that she will not
> remove
> them, and so some are saying it is not good firing practice to leave
> them
> in.
Hi Melinda,
There will certainly be some shortening of element life. It will
probably be minor if the kiln is well ventilated. But the bigger
question to me is "why". The wood will certainly burn out well before
the glaze starts to melt and run. Therefore anything the wood might
have done to prevent plugging of the holes is probably only in the
person's imagination. Try to convince him/her to fire one with and one
without and compare. The sticks certainly can be useful during glazing
to keep raw glaze from entering the holes, but during
firing????....well, I doubt it. Doing a little cleanup around the
holes would be how I would approach this situation.
Regards,
John
jonathan byler on tue 29 sep 09
I could see how pulling out the sticks could make the glaze flake and
fall off around the holes. cut the sticks as short as possible to do
the job. this is a total non issue for the size and amount going in.
people build stuff with crushed up newspaper cores to support bisque
ware all the time, fire them and there really isn't a problem as long
as the kiln is insulated. if you are worried about combustibles in
the kiln, just look at the LOI (loss on ignition) figures for the
materials you are using. you will find there are already LOTS of
organic, combustible materials already in that kiln, especially during
bisque firing.
leave the spyholes open and forget about it. unless the person is
sticking something like a chunk of firewood in the klin.
On Sep 29, 2009, at 7:38 AM, John Hesselberth wrote:
> On Sep 27, 2009, at 6:17 PM, Melinda Collins wrote:
>
>> THE QUESTION: Does it harm the vented kiln, the shelf or other
>> people's
>> work to have them burn out in place within the kiln? Some are
>> saying that
>> she cannot fire them. Potter in question says that she will not
>> remove
>> them, and so some are saying it is not good firing practice to leave
>> them
>> in.
>
> Hi Melinda,
>
> There will certainly be some shortening of element life. It will
> probably be minor if the kiln is well ventilated. But the bigger
> question to me is "why". The wood will certainly burn out well before
> the glaze starts to melt and run. Therefore anything the wood might
> have done to prevent plugging of the holes is probably only in the
> person's imagination. Try to convince him/her to fire one with and one
> without and compare. The sticks certainly can be useful during glazing
> to keep raw glaze from entering the holes, but during
> firing????....well, I doubt it. Doing a little cleanup around the
> holes would be how I would approach this situation.
>
> Regards,
>
> John
douglas fur on tue 29 sep 09
I think Gary's got the answer. His good suggestion about using wax to plug
the holes (I've made little bee's wax balls to the the same.) begs the
question- "Does using the bamboo do any more harm than others' use of wax
resist?" or "Is she being singled out for 'being different' that is to say
doing different.
DRB
Seattle
On Sun, Sep 27, 2009 at 3:17 PM, Melinda Collins wr=
ote:
> I would appreciate some input with an issue we are having in the co-op
> studio.
> One potter cuts up 1/2 inch pieces of bamboo skewers, approximately
> 60-100-which fill drilled holes around the edge of the pot to keep the
> glaze
> from filling the holes the size of the bamboo skewers.
>
> Cone 6 electric glaze firing with other people's work included.
>
> THE QUESTION: Does it harm the vented kiln, the shelf or other people's
> work to have them burn out in place within the kiln? Some are saying tha=
t
> she cannot fire them. Potter in question says that she will not remove
> them, and so some are saying it is not good firing practice to leave them
> in.
> Please offer opinions based on your experience to settle this argument.
> She
> does not do enough work to fill the kiln alone. Thanks so much....know =
I
> can count on you! Melinda
>
> --
> Small Work-No Apologies
> Melinda Collins, Kerrville Texas
> http://web.me.com/melindacollins/
>
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