MOLINA, RAFAEL on thu 21 sep 00
The following two recipes have worked well for me:
SH 232 Clear ^10 Reduction
Potash Feldspar 420
Whiting 240
Kaolin 150
Flint 280
Frit 3110 50
Bentonite 40
Pinell Clear ^10 Reduction/Oxidation
Silica 35
Potash Feldspar 25
Whiting 20
Kaolin 20
Good luck! ;-D
Rafael Enrique
Rafael Molina, MFA
Assistant Professor of Art
Music, Art, and Dance Department
Tarrant County College-Southeast Campus
2100 Southeast Parkway
Arlington, Texas 76018-3144
(817) 515-3711
(817) 515-3189 fax
June Perry on fri 27 sep 02
Check out the archives -- the one that lists past message according to
subject. There have been a lot of Cone 10 glazes posted there over the
years. I know that I posted a nice clear, smooth, satiny finish glaze there
a couple of years ago. It's a glaze that I used under or over a Mashiko Kaki
type glaze.
Regards,
June Perry
Ron Roy on sun 23 aug 09
Hi June,
Just a couple of comments that might be useful for anyone trying these
glazes.
First of all they all will probably be stable glazes
415 is OK but it uses Cornwall stone and there were several kinds around an=
d
it also uses Magnesium Carb which can lead to crawling. This glaze can be
converted to another feldspar and talc or dolomite instead of the Mag Carb.
461 looks OK but the zinc oxide is probably unnecessary.
1029 - High alumina - according to some research I did many years ago - hig=
h
alumina can suppress bubbles that often are a problem in clear glazes -
again - zinc oxide probably not necessary.
1042 - OK
1132 - OK
Most of them will craze on many clay bodies - that can be fixed in most
cases by using MgO to lower expansion.
RR
On Wed, Aug 19, 2009 at 12:38 PM, June wrote:
> Here are a couple from my database. This one (#415) I used in the 80's. O=
n
> a dark body, you will probably get gray with any clear glaze. Most, if no=
t
> all, probably do have to be applied on the thin side to provide the
> transparency you want in a clear.
>
> #415 CLEAR SMOOTH MATT C10 REDUCTION
>
> CORNWALL STONE 85
> WHITING 10
> MAGNESIUM CARBONATE 5
>
> My notes say: WONDERFUL-BUTTERY, SMOOTH,SHINY
>
> #461 BINNS CLEAR - DEPENDABLE 9-10 REDUCTION
>
> WHITING 26.09
> CUSTER FELDSPAR 34..78
> BALL CLAY 13.04
> FLINT 26.09
> Add: ZINC OXIDE 4.34%
>
> BETTER NOT TOO THIN
>
> #1029 SCHACTER CLEAR 10 REDUCTION
>
> GERSTLEY BORATE 5.6
> NEPHELINE SYENITE 55.5
> WOLLASTONITE 11.1
> BALL CLAY 5.6
> FLINT 22.2
>
> ADD: ZINC OXIDE 11.1%, BENTONITE 2.2%
>
> #1042 CLEAR 10 REDUCTION
>
> WHITING 25
> G200 FELDSPAR 25
> EDGAR PLASTIC KAOLIN 18
> FLINT 32
>
> CAN ADD: TIN OXIDE 1 % CELADON - RED IRON OXIDE 2=
%
>
> # 1132 CLEAR GLOSS 10 REDUCTION
>
> POTASH FELDSPAR 27.0
> BALL CLAY 19.5
> WHITING 19.5
> SILICA 34.0
>
> FOR CELADON ADD: IRON OXIDE 1 - 4%
>
>
>
>
>
> Regards,
> June
>
> http://www.shambhalapottery.blogspot.com
> http://www.shambhalapottery.com
> http://groups.yahoo.com/group/sodasaltfiring/
> http://saltandsodafiring.ning.com/
> http://ncclayclub.blogspot.com
>
>
>
>
> ________________________________
> From: Bill Hall
> To: Clayart@LSV.CERAMICS.ORG
> Sent: Wednesday, August 19, 2009 10:53:57 AM
> Subject: Cone 10 Clear
>
> I have been lurking on Clayart for a few weeks now and I thought it was
> about time I introduced myself, especially since I have a question. I hav=
e
> been a potter for 12 years now. My training was under the program set up =
at
> Cedar Vally College by Randy Brodnax. In fact, I still participate in tha=
t
> program. He set it up so that you can take the same class over and over e=
ach
> semester, and it's sort of like a survey course. Our instructor, Mark
> Epstein, is there to instruct the beginning students and help the advance=
d
> students when they request it. He also has us do a class project each
> semester. He's had us building gargoils, dinner services, pieces over 3'
> tall, musical instruments... you get the picture. Most of our work is
> self-assigned, though. So it's sort of like a group studio, in a way. And
> since we take the class semester after semester, the "repeat offenders" f=
orm
> a group that help each other and inspire each other. A really great progr=
am.
> Thanks,
> Randy!
>
> Now to my question. I have been unhappy with the cone 10 clear glaze that
> we use at CVC. I don't have the recipe handy, but it is very sensitive to
> thickness of application. If you get it just right, you get a nice glossy
> clear glaze. But if you get outside that narrow range, you get either a
> sandy surface if it's too thin, or it turns gray if you get it too thick.=
I
> have been running some tests with some glaze recipes listed in John Britt=
's
> book, but they have the same problem. Too sensitive to thickness.
>
> Does anyone here know of a cone 10 reduction clear that is not as sensiti=
ve
> to thickness of application?
>
--
Ron Roy
15084 Little Lake Road
Brighton, Ontario, Canada
K0K 1H0
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