Erin Hayes on mon 27 nov 00
Hi All!
My students and I are searching for a really opaque Cone 10 White glaze. =
We've had several white glazes in the past few quarters, and we keep =
searching for that really perfect one. From what I can tell, the =
group's preference is for a satin texture with a nice oatmeal-y quality. =
I think they're really interested in an off-white.
We've been testing a series of glazes we've found in books and online =
resources, but in the meantime we're just running out of our current =
incarnation of white.
If anyone has a fine white or off-white Cone 10 (Reduction) formula that =
has a nice warm tone, could you send it along to me at =
ehayes@yvcc.cc.wa.us ? I'll forward it to my glaze-hunters. They're =
really anxious to find a few new tests that will produce results that =
might be closer to what they are looking for.
Thanks for your help!
Erin.
Donald G. Goldsobel on tue 28 nov 00
These are two dead-on relaible glazes. I got the oatmeal from the McKenzie
book put out by Kodansha and the Yanigara was in Ceramics Monthly.
Do not use cobalt with the Yanigara unless you like a violet color. Great
for brush work as it is stiff. It likes to be layered with high iron glazes.
Donald
OATMEAL WARREN MC KENZIE - Modified for cone 10
TALC 15
CUSTER 100
CALCINED BALL 42 I used straight om#4
CLAY
EPK 12
WHITING 13
GERSTLEY BORATE 18
BENTONITE 3%
plus 8 percent iron yields a khaki red.
Yanigara
G200 FELDSPAR 3080 38.5%
TALC 1000 12.5
WHITING 1304 16.3
SILICA 2152 26.9
EPK 232 2.9
BENTONITE 232 2.9
8000 GMS = 17.78 LBS
WHITE SEMI MATT GOOD FOR ON GLAZE DECO
TOTALLY OPAQUE,
>My students and I are searching for a really opaque Cone 10 White glaze.
June Perry on tue 28 nov 00
This is an old tried and true waxy matt. Cobalt with go lavendar in it
because of the high magnesia content. You might play with it in one variation
replace the dolomite with whiting.
#61 CARLTON BALL WAXY MATT 10 REDUCTION
CUSTER FELDSPAR 41.4
FLINT 21.8
KAOLIN (EPK) 10.3
DOLOMITE 9.8
TALC 12.1
COLEMANITE 4.6
For Oatmeal add 2% powdered Illmenite
You can also try an addition of 1 or 2% rutile for a softer white.
If you need more opacification you can add about 5-6% tin oxide or 12 -15%
Zircopax.
You can substitute Gerstley Borate or CadyCal for the colemanite. Ferro Frite
3134 might work as well.
Enjoy!
June
Cindy Strnad on tue 28 nov 00
Erin,
I came across a very nice, fat white glaze while doing some experiments
recently. I fired it in oxidation, but I think it would work fine in
reduction, too. If you want it off-white, you might experiment with using
some other clay in place of the EPK, adding some colorants--maybe rutile,
but it's a lovely glaze.
It's a half and half combination of a glaze Ron Roy formulated for me, and
one called Byron Temple White, which came from Clayart. Because this is a
combination, there are odd bits of materials in small amounts, but you can
work with it and see if you can leave any of them out.
Fat White ^10
CUSTER FELDSPAR 36
WOLLASTONITE 8
TALC 3.5
FRIT 3134 3
EPK KAOLIN 17.5
SILICA 21
DOLOMITE 9.5
WHITING 1.5
Cindy Strnad
Earthen Vessels Pottery
RR 1, Box 51
Custer, SD 57730
USA
earthenv@gwtc.net
http://www.earthenvesselssd.com
Karen Sullivan on tue 28 nov 00
John Temple White cone 10
potash feldspar 3500
dolomite 1876
whiting 250
ep kaolin 2300
flint 1876
A soft, buttery, matt white...
looks good on dark brown clays to porcelain.
bamboo karen
on 11/27/00 12:48 PM, Erin Hayes at ehayes@BMI.NET wrote:
> Hi All!
>
> My students and I are searching for a really opaque Cone 10 White glaze.
> We've had several white glazes in the past few quarters, and we keep searching
> for that really perfect one. From what I can tell, the group's preference is
> for a satin texture with a nice oatmeal-y quality. I think they're really
> interested in an off-white.
>
> We've been testing a series of glazes we've found in books and online
> resources, but in the meantime we're just running out of our current
> incarnation of white.
>
> If anyone has a fine white or off-white Cone 10 (Reduction) formula that has a
> nice warm tone, could you send it along to me at ehayes@yvcc.cc.wa.us ? I'll
> forward it to my glaze-hunters. They're really anxious to find a few new tests
> that will produce results that might be closer to what they are looking for.
>
> Thanks for your help!
>
> Erin.
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
> melpots@pclink.com.
>
Ron Roy on thu 30 nov 00
This looks like a stable glaze - I'll bet it will make a good liner - it
will not craze on most porcelains but the expansion is low enough that it
may be a problem on certain iron bearing stoneware clays if there is enough
cristobalite present - easy enough to test for.
Here is the same glaze with fewer materials - don't mind me - I'm just
showing off.
Custer - 38.0
Wollastonite - 16.5
Talc - 10.0
Frit 3134 - 3.0
EPK - 18.0
Silica - 14.5
Total - 100.0
This kind of thing is easy to do with calculation software - just kake sure
you have the right analysis for the materials you are using.
RR
>I came across a very nice, fat white glaze while doing some experiments
>recently. I fired it in oxidation, but I think it would work fine in
>reduction, too. If you want it off-white, you might experiment with using
>some other clay in place of the EPK, adding some colorants--maybe rutile,
>but it's a lovely glaze.
>
>It's a half and half combination of a glaze Ron Roy formulated for me, and
>one called Byron Temple White, which came from Clayart. Because this is a
>combination, there are odd bits of materials in small amounts, but you can
>work with it and see if you can leave any of them out.
>
>Fat White ^10
>
>CUSTER FELDSPAR 36
>WOLLASTONITE 8
>TALC 3.5
>FRIT 3134 3
>EPK KAOLIN 17.5
>SILICA 21
>DOLOMITE 9.5
>WHITING 1.5
>
>
>Cindy Strnad
>Earthen Vessels Pottery
>RR 1, Box 51
>Custer, SD 57730
>USA
>earthenv@gwtc.net
>http://www.earthenvesselssd.com
>
>______________________________________________________________________________
>Send postings to clayart@lsv.ceramics.org
>
>You may look at the archives for the list or change your subscription
>settings from http://www.ceramics.org/clayart/
>
>Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
Ron Roy
93 Pegasus Trail
Scarborough
Ontario, Canada
M1G 3N8
Evenings 416-439-2621
Fax 416-438-7849
Diane G. Echlin on thu 30 nov 00
cone please?
Ron Roy wrote:
>
> This looks like a stable glaze - I'll bet it will make a good liner - it
> will not craze on most porcelains but the expansion is low enough that it
> may be a problem on certain iron bearing stoneware clays if there is enough
> cristobalite present - easy enough to test for.
>
> Here is the same glaze with fewer materials - don't mind me - I'm just
> showing off.
>
> Custer - 38.0
> Wollastonite - 16.5
> Talc - 10.0
> Frit 3134 - 3.0
> EPK - 18.0
> Silica - 14.5
> Total - 100.0
>
> This kind of thing is easy to do with calculation software - just kake sure
> you have the right analysis for the materials you are using.
>
> RR
>
> >I came across a very nice, fat white glaze while doing some experiments
> >recently. I fired it in oxidation, but I think it would work fine in
> >reduction, too. If you want it off-white, you might experiment with using
> >some other clay in place of the EPK, adding some colorants--maybe rutile,
> >but it's a lovely glaze.
> >
> >It's a half and half combination of a glaze Ron Roy formulated for me, and
> >one called Byron Temple White, which came from Clayart. Because this is a
> >combination, there are odd bits of materials in small amounts, but you can
> >work with it and see if you can leave any of them out.
> >
> >Fat White ^10
> >
> >CUSTER FELDSPAR 36
> >WOLLASTONITE 8
> >TALC 3.5
> >FRIT 3134 3
> >EPK KAOLIN 17.5
> >SILICA 21
> >DOLOMITE 9.5
> >WHITING 1.5
> >
> >
> >Cindy Strnad
> >Earthen Vessels Pottery
> >RR 1, Box 51
> >Custer, SD 57730
> >USA
> >earthenv@gwtc.net
> >http://www.earthenvesselssd.com
> >
> >______________________________________________________________________________
> >Send postings to clayart@lsv.ceramics.org
> >
> >You may look at the archives for the list or change your subscription
> >settings from http://www.ceramics.org/clayart/
> >
> >Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
>
> Ron Roy
> 93 Pegasus Trail
> Scarborough
> Ontario, Canada
> M1G 3N8
> Evenings 416-439-2621
> Fax 416-438-7849
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
Cindy Strnad on thu 30 nov 00
Hi, Diane.
Ron was improving on a glaze I sent to Clayart. It's for ^10, oxidation, and
probably reduction as well.
Cindy
cone please?
Ron Roy wrote:
>
> This looks like a stable glaze - I'll bet it will make a good liner - it
> will not craze on most porcelains but the expansion is low enough that it
> may be a problem on certain iron bearing stoneware clays if there is
enough
> cristobalite present - easy enough to test for.
>
> Here is the same glaze with fewer materials - don't mind me - I'm just
> showing off.
Cone 10, Fat White
>
> Custer - 38.0
> Wollastonite - 16.5
> Talc - 10.0
> Frit 3134 - 3.0
> EPK - 18.0
> Silica - 14.5
> Total - 100.0
>
> This kind of thing is easy to do with calculation software - just kake
sure
> you have the right analysis for the materials you are using.
>
> RR
Cindy Strnad
Earthen Vessels Pottery
RR 1, Box 51
Custer, SD 57730
USA
earthenv@gwtc.net
http://www.earthenvesselssd.com
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