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Gerstley Borate - has anyone come up with a GOOD replacement



 
 
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  #1  
Old November 13th 03, 11:06 PM
D Kat
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Default Gerstley Borate - has anyone come up with a GOOD replacement

I could not figure out why our glazes were looking so flat and dead until I
read about gerstley substitutes not being at all the same as what Gerstley
is. Has anyone come up with glazes that don't use Gerstley but that still
give depth and life to the cone 6 oxidation glaze firing? We were using
glazes called Toby's Red (high in GB and Iron), Honey (high in GB with
rutile, floating blue and Erins white. All are now giving us lack of depth,
running, and crawling. Any suggestions or recipes are appreciated. DKat


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  #2  
Old November 13th 03, 11:17 PM
ShantiP1
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If the amount of gerstley isn't too high you should be able to reformulate them
with a frit like Ferro 3134 or 3124. You can't make a direct substitution
though and will have to run the original recipe through a program like Insight
or Matrix to get the molecular formula and then match it using a frit. Boraq is
supposed to be a pretty good substitute. Some of the substitutes work on some
glazes but not others.
I have some cone 6 glazes with pictures and recipes on my web site if you'd
like to take a peek.

Regards,
June
http://www.angelfire.com/art2/shambhalapottery/
  #3  
Old November 14th 03, 01:18 AM
MKent41616
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go to www.kickwheel.com
they have a substitute for gertsleys borate called murrays borate its a near 1
for 1 match.
"Democracy is two wolves and a lamb voting on what to have for
lunch. Liberty is a well-armed lamb contesting the vote."

-- Benjamin Franklin, 1759
  #4  
Old November 14th 03, 05:09 AM
Dewitt
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You might find http://digitalfire.com/gerstleyborate/index.html
useful. Also, you can still buy gertstley borate. See the materials
in the store at http://www.axner.com/

deg
  #5  
Old November 14th 03, 02:38 PM
Bob Masta
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On Thu, 13 Nov 2003 17:06:26 -0500, "D Kat"
wrote:

I could not figure out why our glazes were looking so flat and dead until I
read about gerstley substitutes not being at all the same as what Gerstley
is. Has anyone come up with glazes that don't use Gerstley but that still
give depth and life to the cone 6 oxidation glaze firing? We were using
glazes called Toby's Red (high in GB and Iron), Honey (high in GB with
rutile, floating blue and Erins white. All are now giving us lack of depth,
running, and crawling. Any suggestions or recipes are appreciated. DKat


Which GB substitutes are you using? I've been using Gillespie Borate
but can't compare with the original GB because I'm too new to all this
stuff... the old GB went out before I came in!


Bob Masta
dqatechATdaqartaDOTcom

D A Q A R T A
Data AcQuisition And Real-Time Analysis
www.daqarta.com
 




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