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gb/raku

updated fri 26 jul 02

 

Ababi on tue 23 jul 02


As you had bought it, try to do something:What will happen if you will add CMC and
through it on wares like Pollock (the painter) made in his paintings ? perhaps you will
get different appearance? More crackles less crackles. If it does not work use it for the
cat.
Ababi

I think again: take your terrible GB mix it with the other ingredients + CMC using a fast
drill mixer.
Perhaps you will win? So what if the GB start being soluble?will the raku glaze be
used
for dinner wares?
Ababi who thanks the speller in his lingo mail saving him from too terrible unproper
spelling
---------- Original Message ----------

>Last summer I tested three substitutes in my raku glazes. I substituted Boraq 2,
Laguna
>Borate, and Frit 439 (+ bentonite). In terms of the finished product, I couldn't tell the
>difference between any of the glazes with the substitutes and the glazes w
>ith GB.

>My problems were with the useability of the glazes with the substitutes. Whenever
someone
>touched one of my pots while loading the kiln, their fingers got covered in my glaze.
This was
>a major inconvenience when trying to load my black pots and someone
> elses white pots at the same time. After this experience I went out and bought a 50
pound
>bag of GB.

>When I opened one of the glaze containers this spring I found an unusable granular
mess.
>(Sorry I don't remember which one. I already had my 50lb. bag of GB, so I didn't
make a note
>of it.)

>I attended a raku workshop this summer and the presenter spoke at length about
why glazes
>that are GB based break down over time. His approach is not to replace the GB to
create a
>glaze that is similar in composition, but to develop stable raku glaze re
>cipes without GB. His recipes all contain a sufficient amount of ball clay. It appears
to me
>that this approach makes more sense than trying to find the perfect substitute or
than trying
>to stockpile GB. I am now sorry that I bought that 50lb. bag of
>GB.

>Brenda Z.

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BrendaZ on tue 23 jul 02


Last summer I tested three substitutes in my raku glazes. I substituted Boraq 2, Laguna Borate, and Frit 439 (+ bentonite). In terms of the finished product, I couldn't tell the difference between any of the glazes with the substitutes and the glazes with GB.

My problems were with the useability of the glazes with the substitutes. Whenever someone touched one of my pots while loading the kiln, their fingers got covered in my glaze. This was a major inconvenience when trying to load my black pots and someone elses white pots at the same time. After this experience I went out and bought a 50 pound bag of GB.

When I opened one of the glaze containers this spring I found an unusable granular mess. (Sorry I don't remember which one. I already had my 50lb. bag of GB, so I didn't make a note of it.)

I attended a raku workshop this summer and the presenter spoke at length about why glazes that are GB based break down over time. His approach is not to replace the GB to create a glaze that is similar in composition, but to develop stable raku glaze recipes without GB. His recipes all contain a sufficient amount of ball clay. It appears to me that this approach makes more sense than trying to find the perfect substitute or than trying to stockpile GB. I am now sorry that I bought that 50lb. bag of GB.

Brenda Z.

Brenda Z on wed 24 jul 02


The workshop (which was excellent) was given by Gordon Hutchens.

Gordon's work can be seen at his Web site at http://mars.ark.com/~hutchens/ .

Brenda Z.

----- Original Message -----
From: "Orchard Valley Ceramics Arts Guild"
To:
Sent: Wednesday, July 24, 2002 1:30 PM
Subject: Re: GB/Raku


> >
> >I attended a raku workshop this summer and the presenter spoke at
> >length about why glazes that are GB based break down over time. His
> >approach is not to replace the GB to create a glaze that is similar
> >in composition, but to develop stable raku glaze recipes without GB.
> >His recipes all contain a sufficient amount of ball clay. It
> >appears to me that this approach makes more sense than trying to
> >find the perfect substitute or than trying to stockpile GB.
>
> Sounds like a very sensible idea. Who was the speaker?
>
>

Orchard Valley Ceramics Arts Guild on wed 24 jul 02


>
>I attended a raku workshop this summer and the presenter spoke at
>length about why glazes that are GB based break down over time. His
>approach is not to replace the GB to create a glaze that is similar
>in composition, but to develop stable raku glaze recipes without GB.
>His recipes all contain a sufficient amount of ball clay. It
>appears to me that this approach makes more sense than trying to
>find the perfect substitute or than trying to stockpile GB.

Sounds like a very sensible idea. Who was the speaker?