mel jacobson on tue 27 may 03
>From: Imbolchottie@aol.com
>Date: Tue, 27 May 2003 21:22:13 EDT
>Subject: my thanks
>To: melpots@pclink.com
>X-Mailer: 7.0 for Windows sub 10641
>X-Spam-Rating: 0.0000000000%
>
>I am using a cone 5, white stoneware called B-mix from Laguna clay here in
>so, calif. I am throwing on the wheel and firing my own work at school
>now I am looking for glaze experience. (I know: test, test, test)
>
>Many recipes call for Gerstley Borate -- I think I read that the mine
>closed down and it is no longer available. What does one use for a substitute?
>
>I am looking primarily for cone 5 and/or cone 6 glaze recipes.
>Both oxidation and reduction.
>
>We had one at school, no longer available, that was a mottled green
>(almost light apple green) that turned mauve under reduction. As the
>mottled green (when thin) it almost took a celadon effect working wonders
>on the shapes of the thrown pieces. Does anyone have a green that turns
>mauve/purple under reduction?
>
>Is there a red that is not toxic? I'm throwing plates and dinner ware.
>
>Celadon green I am looking for, and I read somewhere that there are other
>celadon colors other than green -- how about a cream, blue, or black?
>
>Back to the blasted Gerstley Borate....why is it in just about every
>recipe I read?
>
>My thanks for your time, and patience, Jonathan
>
>ps good luck with v. and e. and aren't you lucky to have that pretty funny
>person (a woman w/ kids??) in texas on board. I flashed forward on most
>of those posts but had to stop and read a few -- ahh, the load of a
>moderator! You also have some real poets there, words that live and speak
>to the etheral soul. Best of luck & thanks - J
>
>
>This message scanned for viruses by Corecomm
From:
Minnetonka, Minnesota, U.S.A.
web site: my.pclink.com/~melpots
or try: http://www.pclink.com/melpots
new/ http://www.TICK-ATTACK.COM
karen gringhuis on wed 28 may 03
Jonathan -
>Many recipes call for Gerstley Borate. What does
one use for a substitute?<
GILLESPIE BORATE
>Is there a red that is not toxic? I'm throwing
plates and dinner ware.<
USE Cerdec inclusion pigments and have the resulting
pots professionally tested.
>Celadon green I am looking for<
GET YOURSELF a Cushing HANDBOOK or other glaze book
for discussion of green v. blue celadons.
>I read somewhere that there are other
>celadon colors other than green -- how about a cream,
blue, or black?<
TAKE ANY recipe for a clear glossy glaze and color it
up.
>My thanks for your time, and patience, Jonathan<
YOU'RE WELCOME.
=====
Karen Gringhuis
KG Pottery
Box 607 Alfred NY 14802
__________________________________
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Lily Krakowski on wed 28 may 03
Tolstoy wrote that all happy families are alike and unhappy ones are
different, and Nabokov turned that around. Regardless of whom you "follow",
glazes belong to families. At mid-range one of the biggest--I daresay
happiest family is the Calcium-Borate one. (I would put zinc glazes,
crystaline ones in the "unhappy" group as they tend to be disfunctional!)
Colemanite which was mined, as I recall in several places in the world, was
a natural calcium borate, and created a lot of trouble. When it disappeared
from the US market and was replaced by Gerstley Borate cheers went up till
we all learned GB was as annoying as Colemanite.
More and more people moved to calcium borate frits. I have a number of
glazes that started with colemanite and now are made with Frit 34, Frit
3124, Frit 3134, or Frit 3195. As the relationship of calcium to boron is
1-1.5 you can see that 3195 is "closest" It is easy to recalculate--a skill
you should acquire anyhow, but I have altered many a Colemanite/GB glaze by
making tests using the frits above in the same amount as I had used
colemanite, and doing blends with more clay and silica as needed.
I have nothing against the frits now offered by several manufacturers as
"new and improved" erzatz GBs, except that, I am told, they are costlier.
As to sources of recipes--they abound. May I suggest Ceramics Monthly of
1985 which published the glazes of Hobart Cowles. All are oxidation glazes.
>>
>> Many recipes call for Gerstley Borate -- I think I read that the mine
>> closed down and it is no longer available. What does one use for a
>> substitute?
>>
>> I am looking primarily for cone 5 and/or cone 6 glaze recipes.
>> Both oxidation and reduction.
>>
Lili Krakowski
P.O. Box #1
Constableville, N.Y.
(315) 942-5916/ 397-2389
Be of good courage....
Tony Hansen on thu 29 may 03
Also check www.gerstleyborate.com
-------8<--------
Tolstoy wrote that all happy families are alike and unhappy ones are
different, and Nabokov turned that around. Regardless of whom you \"follow\",
glazes belong to families. At mid-range one of the biggest--I daresay
happiest family is the Calcium-Borate one. (I would put zinc glazes,
crystaline ones in the \"unhappy\" group as they tend to be disfunctional!)
Colemanite which was mined, as I recall in several places in the world, was
a natural calcium borate, and created a lot of trouble. When it disappeared
from the US market and was replaced by Gerstley Borate cheers went up till
we all learned GB was as annoying as Colemanite.
More and more people moved to calcium borate frits. I have a number of
glazes that started with colemanite and now are made with Frit 34, Frit
3124, Frit 3134, or Frit 3195. As the relationship of calcium to boron is
1-1.5 you can see that 3195 is \"closest\" It is easy to recalculate--a skill
you should acquire anyhow, but I have altered many a Colemanite/GB glaze by
making tests using the frits above in the same amount as I had used
colemanite, and doing blends with more clay and silica as needed.
I have nothing against the frits now offered by several manufacturers as
\"new and improved\" erzatz GBs, except that, I am told, they are costlier.
As to sources of recipes--they abound. May I suggest Ceramics Monthly of
1985 which published the glazes of Hobart Cowles. All are oxidation glazes.
>>
>> Many recipes call for Gerstley Borate -- I think I read that the mine
>> closed down and it is no longer available. What does one use for a
>> substitute?
>>
>> I am looking primarily for cone 5 and/or cone 6 glaze recipes.
>> Both oxidation and reduction.
>>
--------
Tony Hansen, Digitalfire Corp.
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