Edouard Bastarache on fri 21 jul 00
Hello all,
I found this surfing the Net:
"Gillespie Borate
Gerstley Borate has been a valuable glaze constituent for many years and is
a key part of many interesting and successful glazes over a range of firing
conditions. As the supply has dwindled due to closing of the supply source,
our technical staff went to the lab and began experimenting. Beginning with
x-ray diffraction to determine the mineral constitution of Gerstley Borate
and proceeding through a substantial amount of experimentation, we have
arrived at a new material. We call it Gillespie Borate. It is a borate
source that is virtually identical to the original Gerstley Borate in terms
of physical, mineralogical and chemical composition. Gillespie Borate is
comprised principally of ulexite (sodium calcium borate) with small amounts
of colemanite (calcium borate) and other minerals -- just like Gerstley
Borate.
While Gillespie Borate has the beneficial fluxing and glaze development
properties of Gerstley Borate, it does not have the variability or impurity
levels that characterized Gerstley Borate. Gillespie Borate is a precise
mixture of pure natural minerals and is manufactured under close quality
control supervision. Hence, Gillespie Borate does not vary over time and is
a consistent, reliable raw material. Since Gillespie Borate does not contain
the impurity levels that provided off-color to Gerstley Borate glazes, you
may find your glazes whiter and brighter. In applications where impurities
are desired, our technical staff can assist you in adding pigments to your
glazes as necessary.
Try Gillespie Borate, we think you will be impressed with the results!
Although we plan to begin shipping Gillespie Borate in mid-summer, we will
be sending out samples for your evaluation much sooner. Contact us today to
request your evaluation sample of Gillespie Borate."
http://www.hamgil.com
Later,
Edouard Bastarache
Dans / In "La Belle Province"
edouardb@sorel-tracy.qc.ca
http://www.sorel-tracy.qc.ca/~edouardb/
Carla Flati on mon 18 sep 00
Hi Everybody!
I haven't read a digest in the last 2 months and I'm having a hard time
catching up. Have you guys already discussed Gillespie Borate? I had the
best luck with every glaze I tested it in last week, but before I muck up
the list with repetition, I thought I'd check to see if you've been down
this road already. Could someone let me know?
Also, has anyone noticed the pattern of discussions around here? Every 5 or
so years there's a Picasso debate! This time around, I'm leaving it alone.
Hard to believe, huh?
Hope everyone had a fun (and profitable) summer!
Carla
vince pitelka on tue 19 sep 00
> Also, has anyone noticed the pattern of discussions around here? Every 5
or
> so years there's a Picasso debate! This time around, I'm leaving it
alone.
> Hard to believe, huh?
Oh come on, Carla, surely we can drag Peter Voulkos into this an have a
reall whangerdoo - feathers flying, blood and gore, take no prisoners, just
like the good old days, eh?
Best wishes -
- Vince
Vince Pitelka
Home - vpitelka@dekalb.net
615/597-5376
Work - wpitelka@tntech.edu
615/597-6801 ext. 111, fax 615/597-6803
Appalachian Center for Crafts
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
http://www.craftcenter.tntech.edu/
Lorraine Pierce on tue 19 sep 00
Hi Carla, I am testing Gillespie and Laguna Borate glazes 'as we
speak'...would like to exchange results. I am finding them more difficult to
apply than my non-gerstley glazes and that they must be thinned more than I
usually do or will crack as they dry on the bisqued pot. I've started with
high borate glazes, Les Lawrence Clear, and Zakin's Phoenix 2, cone 6
oxidation. This far into testing I prefer my growing list of non-gerstley
glazes, for ease of application. I am applying the glazes to 6" bowls
decorated with bisqued underglazes. The test tiles were no problem to apply,
and I expect a glaze with a lower quantity of borate would be much different
to use. I won't have fired results for a couple of weeks. I'll keep you
posted. Lori in New Port Richey, Fl. Haven't
yet ordered a sample of Kickwheel's Borate.
Frank Gaydos on sat 11 nov 00
Has any of the Clayarters had any experience using Gillespie Borate, the =
Hamill & Gillespie Gerstley Borate substitute? It's getting down to =
crunch time and I need to start looking for a sub.
Frank Gaydos
510 Gerritt St.
Philadelphia, Pa.
19147-5821 USA
http://home.earthlink.net/~fgaydos/
Ron Roy on sun 19 jul 09
HI Miriam,
Of all the GB substitutes the
Gillespie Borate is the closest and will serve well is most glazes.
Most glaze that use GB can be reformulated using frits by the way - I
have done hundreds now and most work the first try.
RR
On Wed, Jul 15, 2009 at 2:38 PM, Miriam Schiller wr=
=3D
ote:
> Hello all,
>
>
>
> Has anyone used Gillespie Borate in replacement of Gerstley Borate? How
> did it go? My supplier has it and I'm wondering if I should get some to
> have more options with red and pink glazes (Cone 6 oxidation).
>
>
>
> Thanks,
>
> Miriam Schiller
>
> www.potterybymiriam.etsy.com
>
> www.potterybymiriam.wordpress.com
>
> _________________________________________________________________
> Hotmail=3DAE has ever-growing storage! Don=3D92t worry about storage limi=
ts.
>
> http://windowslive.com/Tutorial/Hotmail/Storage?ocid=3D3DTXT_TAGLM_WL_HM_=
Tu=3D
torial_Storage_062009
>
--=3D20
Ron Roy
15084 Little Lake Road
Brighton, Ontario, Canada
K0K 1H0
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