Jorge Nabel on wed 8 may 02
Ron, no ,this is trying to be a cone 6 red clay body I=B4m dealing with.=
I
read Andy=B4s suggestion and wondered if I fire the dry powder clay as it
comes from the bag to ^6/Red perhaps works well except for the amount of
Iron that will melt the clay?????I liked the idea of same clay=B4s grogg =
but
not sure.Perhaps firing ^6/Ox???
By the way, no analysis is available from anything around here.
Jorge Nabel
alfareriaurbana@sion.com
I think this is a good suggestion Andy - depends on how much you need I
suppose. I do it - save my trimmings and roll em - sieve to different siz=
es
and fire to bisque temperature.
There are many additions that would also help - silica for one, kyanite a=
nd
pyrophilite are others - feldspar is another - it deos get tricky when hi=
gh
firing but I am assuming this is low fire stuff???
RR
>> At 11:18 PM 4/17/02 -0300, you wrote:
>>...This is a natural clay and its very soft and
>>plastic for throwing but I feel need antiplastic somehow.
>>First wanted to add grogg, but its not available a good grog.
>
>If grog is not available to you, make your own. Take the claybody you
>want to modify, dry it out, bust it up into powder, fire it to the glaze
>temperature you fire at, bust it up some more, and sieve it through a
>screen the size you want the grog to be. When you add it to the clay
>body, it will not change the color of the finished product or change the
>way the glazes work with the clay body. It will change the plasticity
>and lower the shrinkage of the clay body.
Snail Scott on wed 8 may 02
At 10:13 AM 5/8/02 -0300, you wrote:
I liked the idea of same clay=B4s grogg but
>not sure.
Grog made of the same clay will give standard=20
grog-like reduction of wet shrinkage and=20
plasticity, but will NOT act like grog at the=20
vitrification temperature of the clay. It will=20
not reduce warpage, etc. Depends on what you=20
want.
-Snail
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