Dan Tarro on tue 22 sep 98
From: oaktreestoneware1
To: CLAYART@LSV.UKY.EDU
Date: Sat, 19 Sep 1998 15:23:03 +0000
A long time ago while attending U of Minnesota in Duluth (centuries ago)
some of the grad students were working with Nelson on a project of going
direct form the wheel to the salt kiln. No drying. Some success was had.
Anyone on the list know of anyone who is doing this or who has had some
success with it? Never got in on it at school, didn't think I would ever
need it. I am going off the list for a while to get ready for my last
show and get the new studio started. Please reply to me directly, and
maybe to the list for those curious.
thanks much,
Dan Tarro
Oak Tree Stoneware
Ham Lake, Minnesota
Oaktreestoneware1@juno.com
Dan Tarro
Oak Tree Stoneware
Ham Lake, Minnesota
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Bruce Girrell on thu 24 sep 98
You know, when I read Marc Ward's post about this, I was about to dash off a
quick response, but I just don't have that much experience, so I kept my
fingers quiet. But I got to thinking about it and maybe there is something
there.
My experience to date has been that of cleaning up literally hundreds of
shards from the kiln floor as a result of pushing the temperature too fast.
I had a terracotta planter (lots of grog there - nice open body) about 14" x
14" x 12" with 1/2" thick walls except for a 1" thick band around the top.
It had dried for over a month before I tried to fire it. I may as well have
loaded the kiln with popcorn for all the noise that was coming out of it.
Only one side and a corner remained intact, the rest lay in tiny pieces
throughout the kiln.
On the other hand I just shove a set of cones in any old lump of clay and
stuff it into the kiln just before firing. Granted, they're much smaller
lumps of clay than my planter, but the cone placques come out just fine
after going in completely wet.
So, is it possible that a _wet_ piece doesn't need a preheat (clay particles
are held apart and are slightly mobile and allow steam to escape), while a
bone dry piece does need a preheat (clay particles are close together and
tightly bound with possible skin layer on surface)?
If a preheat is not required, there has to be some physical explanation for
the escape of steam from the clay matrix. Is there anyone out there with
access to a scanning electron microscope? I'm not kidding. I think we can
devise some experiments that might be able to provide a physical
explanation.
Bruce "where's a good SEM when you need one" Girrell
agrez on thu 24 sep 98
Dan Tarro wrote:
>
> ----------------------------Original message----------------------------
> From: oaktreestoneware1
> To: CLAYART@LSV.UKY.EDU
> Date: Sat, 19 Sep 1998 15:23:03 +0000
>
> A long time ago while attending U of Minnesota in Duluth (centuries ago)
> some of the grad students were working with Nelson on a project of going
> direct form the wheel to the salt kiln. No drying. Some success was had.
> Anyone on the list know of anyone who is doing this or who has had some
> success with it? Never got in on it at school, didn't think I would ever
> need it. I am going off the list for a while to get ready for my last
> show and get the new studio started. Please reply to me directly, and
> maybe to the list for those curious.
> thanks much,
>
> Dan Tarro
> Oak Tree Stoneware
> Ham Lake, Minnesota
> Oaktreestoneware1@juno.com
I once read about this in a book, and decided to try it. I threw my pot,
cut it off and put it in a very small kiln. My son and I held our
breaths and turned on the switch...the kiln began heating and within 15
minutes we thought we heard popcorn popping! Nah, couldn't be! But sure
enough, when we opened the kiln a short time later, there it was...a
pile of ceramic popcorn! Oh well, I gave it my shot, if not my best
shot.
Andrea Grez
Alford Wayman on sat 26 sep 98
agrez wrote:
>
> ----------------------------Original message----------------------------
> Dan Tarro wrote:
> >
> > ----------------------------Original message----------------------------
> > From: oaktreestoneware1
> > To: CLAYART@LSV.UKY.EDU
> > Date: Sat, 19 Sep 1998 15:23:03 +0000
> >
> > A long time ago while attending U of Minnesota in Duluth (centuries ago)
> > some of the grad students were working with Nelson on a project of going
> > direct form the wheel to the salt kiln. No drying. Some success was had.
> > Anyone on the list know of anyone who is doing this or who has had some
> > success with it? Never got in on it at school, didn't think I would ever
> > need it. I am going off the list for a while to get ready for my last
> > show and get the new studio started. Please reply to me directly, and
> > maybe to the list for those curious.
> > thanks much,
> >
> > Dan Tarro
> > Oak Tree Stoneware
> > Ham Lake, Minnesota
> > Oaktreestoneware1@juno.com
>
> I once read about this in a book, and decided to try it. I threw my pot,
> cut it off and put it in a very small kiln. My son and I held our
> breaths and turned on the switch...the kiln began heating and within 15
> minutes we thought we heard popcorn popping! Nah, couldn't be! But sure
> enough, when we opened the kiln a short time later, there it was...a
> pile of ceramic popcorn! Oh well, I gave it my shot, if not my best
> shot.
>
> Andrea GrezTher was a man called greenburg who did a demo at Marywood universi
with wet and green ware. He took wet clay and wrapped it in alumaialum
foil with borox on the inside and put it in the kiln and fired to about
dark red heat 022?-010? I'm not sure. He was also doing it in a grill
outback. The alumium foil would melt on the piece like globs. it came
out a soft bisque. Worked good on masks . sorry about the spelling and i
wish I knew more about the process.
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