Dan Tarro on sun 20 sep 98
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
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Christopher J. Anton on tue 22 sep 98
-----Original Message-----
From: Dan Tarro
To: CLAYART@LSV.UKY.EDU
Date: Sunday, September 20, 1998 4:20 PM
Subject: Wheel to kiln wet!!!
----------------------------Original message----------------------------
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.
thanks much,
__________________________________________________________________
I have not tried this yet, but one of my instructors said that he had, and
that it does work. The trick is, apparently, to get the items into the kiln
while they are of uniform wetness (depth-wise). Otherwise, the surface is
dryer than the interior and traps moisture in the interior as the clay is
fired. I have no info on how to adjust firing schedules, or whether such
adjustment is necessary.
- Chris
Cindy on wed 23 sep 98
Placing pottery wet into the kiln can be done with pieces of uniform
thickness (or, preferably, uniform thinness) and relatively small bottoms.
It is reputed to be hard on your elements, though.
Cindy Strnad
Earthen Vessels
Custer, SD
USA http://blackhills-info.com/a/cindys/menu.htm
----------
> From: Christopher J. Anton
> To: CLAYART@LSV.UKY.EDU
> Subject: Re: Wheel to kiln wet!!!
> Date: Tuesday, September 22, 1998 3:50 PM
>
> ----------------------------Original message----------------------------
>
> -----Original Message-----
> From: Dan Tarro
> To: CLAYART@LSV.UKY.EDU
> Date: Sunday, September 20, 1998 4:20 PM
> Subject: Wheel to kiln wet!!!
>
>
> ----------------------------Original message----------------------------
> 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.
> thanks much,
>
> __________________________________________________________________
> I have not tried this yet, but one of my instructors said that he had,
and
> that it does work. The trick is, apparently, to get the items into the
kiln
> while they are of uniform wetness (depth-wise). Otherwise, the surface
is
> dryer than the interior and traps moisture in the interior as the clay is
> fired. I have no info on how to adjust firing schedules, or whether such
> adjustment is necessary.
>
> - Chris
>
Fay & Ralph Loewenthal on thu 24 sep 98
I have posted this before. In a book "Ceramic Formulas the
Complete Compendium" John W. Conrad, a 1976 printing,
he states under " Raku Glazes" and I quote " In the wet fire
technique, the object is made by hand or wheel thrown,
using a highly porous and coarse clay. While still wet, the
object is covered with an engobe type glaze. This object is
placed in a 1700F kiln. The resulting steam creates a
protective envelope around the object and prevents it from
exploding. Upon reaching the desired temperature, the
object is removed from the kiln and handled the same way
as in the bisque fire technique.". We have tried it and it
works. Fay made a sculpture, we fired it wet, removed it
after reaching bisque. We then glazed it with a normal raku
glaze, fired it again, and voila a lovely Raku sculprure.
Hope this helps Ralph in PE SA recovering from all the food
consumed over the Jewish New Year by fasting today.
Bruce Girrell on fri 25 sep 98
> -----Original Message-----
> From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.UKY.EDU]On Behalf
> Of Fay & Ralph Loewenthal
> Sent: Thursday, September 24, 1998 10:01 AM
> To: CLAYART@LSV.UKY.EDU
> Subject: Re: Wheel to kiln wet!!!
>
>
> ----------------------------Original message----------------------------
>
> In a book "Ceramic Formulas the Complete Compendium" John W. Conrad, a
1976
> printing, he states under " Raku Glazes" and I quote " In the wet fire
> technique, the object is made by hand or wheel thrown, using a highly
porous
> and coarse clay. While still wet, the object is covered with an engobe
type
> glaze. This object is placed in a 1700F kiln. The resulting steam creates
a
> protective envelope around the object and prevents it from exploding.
^^^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^
Do you have any idea what he means by this? It makes no physical sense to
me. Is he suggesting that the steam creates an external pressure[1], thereby
containing the explosive force of the steam still inside the object? Is he
suggesting that the humidity[2] from the escaping steam is somehow
preventing the explosion?
I have to believe that, from a physics standpoint, there must be pathways
that remain open, allowing steam from the interior of the piece to somehow
reach the surface. I can't buy the "protective envelope" argument without
further substantiation.
Bruce "a little incredulous today" Girrell
[1] Impossible, since there is no containment vessel.
[2] I'm not sure that the concept of humidity even applies at 1700F.
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