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scaley matter in glaze?

updated thu 20 nov 03

 

Andrew Francis on tue 18 nov 03


Hi Folks,

At the Guild Studio School, we have three glazes that have a rock hard
scaley material in the bottom. The glazes contain 3110 frit and a couple of
other ingredients that I know probably are not the culprits. The question
is, should we start over and clean out the buckets with each new batch or is
there an additive that can prevent this? - or is it a problem that we can
ignore? Some students have been having trouble with the glazes not being
glassy enough, but that could be application. I'm assuming it is some kind
of calcination. Could it be from our water? Any feedback will be appreciated

afrancis@guildstudioschool.org

Snail Scott on tue 18 nov 03


At 09:42 AM 11/18/03 -0500, you wrote:
>...we have three glazes that have a rock hard
>scaley material in the bottom. The glazes contain 3110 frit and a couple of
>other ingredients...


High-frit glazes can settle badly. Try adding bentonite.

-Snail

Ababi on tue 18 nov 03


The glaze should be reformulated/ You can E mail it to me and I will try
to do my best.

Ababi Sharon
Glaze addict
Kibbutz Shoval Israel
ababisha@shoval.org.il
http://members4.clubphoto.com/ababi306910
http://www.matrix2000.co.nz/Matrix%20Demo/Ababi.htm



-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Andrew
Francis
Sent: Tuesday, November 18, 2003 4:42 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Scaley Matter in Glaze?

Hi Folks,

At the Guild Studio School, we have three glazes that have a rock hard
scaley material in the bottom. The glazes contain 3110 frit and a
couple of
other ingredients that I know probably are not the culprits. The
question
is, should we start over and clean out the buckets with each new batch
or is
there an additive that can prevent this? - or is it a problem that we
can
ignore? Some students have been having trouble with the glazes not
being
glassy enough, but that could be application. I'm assuming it is some
kind
of calcination. Could it be from our water? Any feedback will be
appreciated

afrancis@guildstudioschool.org

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Ron Roy on wed 19 nov 03


Send me the recipe and the kinds of ball clay you have - 3110 will leach
sodium into glazes and deflocculate them. Better include what other frits
you have or can get.

RR


>At 09:42 AM 11/18/03 -0500, you wrote:
>>...we have three glazes that have a rock hard
>>scaley material in the bottom. The glazes contain 3110 frit and a couple of
>>other ingredients...

Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513