WALLY ASSELBERGHS on sat 2 aug 03
Thanks Tony for the "gerstley borate" website address, some real good information there......Many equivalents mentionned....
But has any of you Clayarters ever actually tried out one of these equivalents ? Got any good results ?
I would need it for a low-temp "naked raku" glaze, the classical Jacobson recipe containing 35% GB, balance frit 3110. Not really interested in colour development or surface look, matt or gloss.... It just needs to develop a good "orange-peel" at low temperature, and induce some crackling to the glaze.
I once got a sample of Laguna Borate, it did not work. Calciumborate frits only created a cement-like mixture in the glaze bin.....Ran some experiments with colemanite and Borocalcite, both made the glaze start to boil and disintigrate at 400°C....Even when I calcined both products before adding them to the glaze.... Really curious if all these other so called "miracle products" would really work.....
Thanks for any tips or experiences in this matter.
Wally.
www.student.kuleuven.ac.be/~m9822918
Original message :
www.digitalfire.ab.ca/cermat/ceramicmaterials/material.php?id=1657
There is a link to Gerstley Borate on the page and to two of their
websites (there is a link to the third on the etimine.com one.
Turkish Ulexite certainly not the same as GB either
in chemistry or fired characteristics. GB contains some Ulexite.
There is a part in the tutorial section in the INSIGHT
manual on incorporating it into a glaze to replace GB.
Tony Hansen, Digitalfire Corp.
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Ababi on sun 3 aug 03
Hallo Wally
I think you have to change you way of thinking, I know it is hard.
If in your YAHOO group site you have the picture I had sent once of my
naked raku=85.=20
That naked raku happened when I used a raku glaze made out of a frit of
Harrison Maier {?} called 3701 95% and kaolin 5%. I might apply too
thick and after the firing it was peeled off.
=20
Let's see it as a starting point: To make a baddd glaze! Even 100% frit
or: 60 borax 20 kaolin and 20 glue Peptapon or CMC . =20
I would offer you to try Paperpulp, I used it in my last raku firing =96
it spits the glaze like hell, very interesting. I stopped raku because
in the last firing I felt I was going to die, not enough wind near my
studio!
=20
What I tell you Wally that you have to be creative. I know you are
creative, but what I mean is like your car in the desert and you have
lost a wheel? What shall you do? Stay and die? No you will make a
motorcycle out of it and be happier than before.
I know you like the Jacobson.
I wrote you once about the UK frits.
If you want send me again the glaze, the analysis of available frits and
I will try to rebuild it =96 I do it differently these days.
You are right the Laguna borate is not a celebration however from what I
have heard from some well known potters ( second ear) ( including Harry)
the Gillespie borate is very good. Perhaps you try and if you like you
can buy a sack and delete my letter
=20
=20
=20
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
=20
=20
=20
=20
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of WALLY
ASSELBERGHS
Sent: Saturday, August 02, 2003 10:43 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Anyone actually ever TRIED equivalents of gerstley borate ?
=20
brian guffey on mon 4 aug 03
Not beeing around to see the original, i was wondering
whether anyone suggested gillespie borate? the studio i
work in, uses that as a replacement, and so far, it is
right on par with everything i have seen it used in.
On Sat, 2 Aug 2003 13:43:23 -0700, WALLY ASSELBERGHS
wrote:
>
> Thanks Tony for the "gerstley borate" website address,
> some real good information there......Many equivalents
> mentionned....
> But has any of you Clayarters ever actually tried out
> one of these equivalents ? Got any good results ?
> I would need it for a low-temp "naked raku" glaze, the
> classical Jacobson recipe containing 35% GB, balance
> frit 3110. Not really interested in colour development
> or surface look, matt or gloss.... It just needs to
> develop a good "orange-peel" at low temperature, and
> induce some crackling to the glaze.
> I once got a sample of Laguna Borate, it did not
work.
> Calciumborate frits only created a cement-like mixture
> in the glaze bin.....Ran some experiments with
> colemanite and Borocalcite, both made the glaze start
> to boil and disintigrate at 400?C....Even when I
> calcined both products before adding them to the
> glaze.... Really curious if all these other so
called
> "miracle products" would really work.....
> Thanks for any tips or experiences in this matter.
> Wally.
> www.student.kuleuven.ac.be/~m9822918
>
> Original message :
>
www.digitalfire.ab.ca/cermat/ceramicmaterials/material.php?id=1657
> There is a link to Gerstley Borate on the page and to
> two of their
> websites (there is a link to the third on the
> etimine.com one.
> Turkish Ulexite certainly not the same as GB either
> in chemistry or fired characteristics. GB contains
some
> Ulexite.
> There is a part in the tutorial section in the INSIGHT
> manual on incorporating it into a glaze to replace GB.
> Tony Hansen, Digitalfire Corp.
>
> __________________________________________
>
>
>
> ---------------------------------
> Do you Yahoo!?
> Yahoo! SiteBuilder - Free, easy-to-use web site design
> software
>
>
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Ababi on tue 5 aug 03
Hello Brian
To my computer arrived from two sources the grapevine that Gillespie
Borate is a good substitute.
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
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