Sharon31 on fri 2 jun 00
Hello Cindy!
Thanks for the nice words!
The Old Gold Albany, as I checked wasn't in the list of Marty Anderson, but
I know it is a nice glaze, also in ^7(my teacher fired all the 'high' to
^7). I had a problem that from some clayboddies, it fell off. I tried to
reduce the LiO2, but than, it was not the same beautifull glaze.
I have A beautifull ^6 jade too, from V.C., I lost the book somewhere, but
I really offer you to check it too. Maybe , it is the same one. The way I
have it in my recipe book is with my local materials so it would not help
you.
Here is Another glaze that I use, from Marty Anderson's list. It is a warm
sandy brown. In some works I print leaves, in bone dry add manganese ,
clean with steel wool and fire. After glazing with this glaze I get really
beautifull, yet delicate, results:
***********************************
Marty sandy brown
=================
Potash Feldspar..... 29.60 28.60%
Flint............... 22.20 21.45%
Whiting............. 22.20 21.45%
EPK................. 11.10 10.72%
Zinc................ 7.40 7.15%
Rutile.............. 3.00 2.90%
Red Iron Oxide...... 3.00 2.90%
Black Iron Oxide.... 3.00 2.90%
Bentonite........... 2.00 1.93%
========
103.50
CaO 0.22 13.60%
MgO 0.00 0.05%
K2O 0.06 5.89%
ZnO 0.09 8.08%
TiO2 0.04 3.16%
ZrO2 0.00 0.03%
Al2O3 0.10 10.70%
SiO2 0.80 52.43%
Fe2O3 0.03 6.06%
Cost/kg 3.94
Si:Al 8.31
SiB:Al 8.31
Expan 8.45
********************************
To the glaze gurus! My Insight did not recognized black iron oxide, you may
see it but I don't think it matters.
Ababi
sharon@shoval.org.il
http://www.israelceramics.org/main.asp?what=gallery.htm
http://www.milkywayceramics.com/cgallery/asharon.htm
----- Original Message -----
From: Cindy Strnad
To:
Sent: Sunday, May 28, 2000 06:15
Subject: Glaze tests
> Hello everyone.
>
> I just unloaded some glaze tests from the kiln. and was pleasantly
rewarded
> by all of them, which is definitely a first! Let me share them with you:
>
> I fire to ^6 on a medium speed setting, then soak for 45 minutes. I use a
> medium brown ^6 stoneware clay with manganese flecks.
>
> Xavier's Warm Jade Green ^6
>
> Ferro Fr. 3124 9 (I used 3134, but will order some 3124 soon.)
> Custer Spar 40
> Whiting 16
> Talc 9
> EPK Kaolin 10
> Flint 16
> Rutile 6
>
> Add:
> Copper Carb 4
>
> Glaze by Heidi Haugen, contributed to Clayart by John Hesselberth
>
> I wouldn't call this glaze a jade green, though jade comes in many colors,
> including this one. For me, it produced a beautiful, pale variegated
> green-turquoise where thin, and a non-variegated version where thicker. I
> liked the thin bits best. Dipping a rather too-large test bowl in a rather
> too-small test glaze container makes for a lot of variegations in
thickness,
> and this added to the interest of the finished surface.
>
> According to the tests John submitted with this glaze recipe, it is
> unusually stable for a copper-containing glaze.
>
> Gibby's Wild Rose Tenmoku ^6
>
> This glaze is high on alumina and low on silica. It's also high in
lithium.
> I wouldn't think it would be suitable for food--it doesn't even look like
> something I'd want to eat food from, but it's gorgeous.
>
> Lithium Carb 9.5
> Bone Ash 9.5
> Neph Syenite 55.7
> EPK 15.8
> Red Iron Ox. 9.5
>
> Wild Rose fires to a variegated black and metallic copper surface.
> Absolutely stunning.
>
> Old Gold Albany
>
> This one is based on a glaze of Marty Anderson, modified, I assume, by
Ababy
> (who submitted it to Clayart). Another beautiful surface which may not be
> food-safe. It's high in lithium and I'm considering having it tested. It
> would be nice if it were to pass.
>
> Lithium Carb. 10.0
> Zircopax 12.0
> Redart 56.2
> Whiting 7.8
> Custer Spar 6.2
> Talc 3.9
> EPK 3.9
>
> This glaze turned out satiny matte with areas of dark gold-brown edged by
> areas of lighter tan-gold. A lovely smooth, waxy surface. Thanks, Ababy.
>
> Candle Satin Matte, revised.
>
> Chris Schafale shared this glaze, and I've been meaning to try it for
quite
> some time. I changed it a bit to suit the materials I had on hand. She
uses
> G-200 spar, I (since I live about 2 miles from Pacer's Custer feldspar
mine)
> use Custer spar. She uses Frit 3124. I thought I had some of that, but all
I
> could find was 3134, so I modified the recipe--keeping it as close to the
> analysis of her original as I could manage.
>
> Talc 8
> Dolomite 8
> EPK 23
> Silica 6
> Custer 37
> 3134 18
>
> This was advertised as a clear satin matte. Of course, there's no such
thing
> as a truly clear matte. The very nature of matteness makes this
impossible.
> It's like a clear frosted window in that regard. It does allow light to
come
> through, but it obscures what is beyond (or in this case, what is
> underneath).
>
> At any rate, it's a beautiful glaze, and may be just what I wanted as a
> surface for over-glaze painting. Applied thinly, it's more matte and more
> translucent. I'm looking forward to trying out some variations of this
> glaze. Thanks bunches, Chris.
>
> Cindy Strnad
> earthenv@gwtc.net
> Earthen Vessels Pottery
> RR 1, Box 51
> Custer, SD 57730
>
>
____________________________________________________________________________
__
> 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.
John Hesselberth on sat 3 jun 00
Hi Ababi,
I couldn't help noticing the unusual numbers in your unity column below.
The percentage analysis more or less lines up with mine; however what
have you done to get the left hand column which I presume to be unity
numbers?? For this glaze recipe, i calculate the unity formula to be:
silica 2.18 and alumina 0.251. Also calcium 0.617. The rest of my
numbers are very different from yours also. At first I thought you might
have put everything in unity, but that doesn't add up either. Please
explain; my curiosity is getting to me.
John
Sharon31 wrote:
>Here is Another glaze that I use, from Marty Anderson's list. It is a warm
>sandy brown. In some works I print leaves, in bone dry add manganese ,
>clean with steel wool and fire. After glazing with this glaze I get really
>beautifull, yet delicate, results:
>***********************************
>Marty sandy brown
>=================
> Potash Feldspar..... 29.60 28.60%
> Flint............... 22.20 21.45%
> Whiting............. 22.20 21.45%
> EPK................. 11.10 10.72%
> Zinc................ 7.40 7.15%
> Rutile.............. 3.00 2.90%
> Red Iron Oxide...... 3.00 2.90%
> Black Iron Oxide.... 3.00 2.90%
> Bentonite........... 2.00 1.93%
> ========
> 103.50
>
> CaO 0.22 13.60%
> MgO 0.00 0.05%
> K2O 0.06 5.89%
> ZnO 0.09 8.08%
> TiO2 0.04 3.16%
> ZrO2 0.00 0.03%
> Al2O3 0.10 10.70%
> SiO2 0.80 52.43%
> Fe2O3 0.03 6.06%
>
> Cost/kg 3.94
> Si:Al 8.31
> SiB:Al 8.31
> Expan 8.45
John Hesselberth
Frog Pond Pottery
P.O. Box 88
Pocopson, PA 19366 USA
EMail: john@frogpondpottery.com web site: http://www.frogpondpottery.com
"Pots, like other forms of art, are human expressions: pleasure, pain or
indifference before them depends upon their natures, and their natures
are inevitably projections of the minds of their creators." Bernard
Leach, A Potter's Book.
Sharon31 on mon 5 jun 00
Well John, it looks like I made it all wrong!
The answer is very simple, you don`t have to recalculate it. In Insight,
when you convert recipe, you change the second recipe's "calculation type"
to "none".Than when you have the new recipe, you change the amount to what
ever you want, and put the "calculation type" to RO unity.I did not return
it to RO unity and that what caused the terrible results! There is a small
problem with Insight, that it writes on the "notepad" the first letters or
words you write, it can be changed. I probably was too tired and did not see
that it was not the EXACT recipe that was on the window of INSIGHT, as I
use some different materials.
Marty sandy brown
=================
POTASH FELDSPAR NR.. 29.60 28.60%
QUARTZ.............. 22.20 21.45%
Whiting............. 22.20 21.45%
ENGLISH KAOLIN(Puraf 11.10 10.72%
ZINC OXIDE.......... 7.40 7.15%
RUTILE POWDER....... 3.00 2.90%
Red Iron Oxide...... 3.00 2.90%
Black Iron Oxide.... 3.00 2.90%
Bentonite........... 2.00 1.93%
========
103.50
CaO 0.58* 13.60%
MgO 0.01* 0.10%
K2O 0.12* 4.68%
Na2O 0.05* 1.36%
ZnO 0.24* 8.08%
TiO2 0.10 3.16%
ZrO2 0.00 0.03%
Al2O3 0.11 4.78%
SiO2 2.33 58.15%
Fe2O3 0.09 6.06%
Cost/kg 4.98 Israeli Shekel: On this no one can disagree!
Si:Al 20.62
SiB:Al 20.62
Expan 8.40
Here from Marty's list:
MARTY'S SANDY BROWN ^6
Potash Feldspar 29.6
Flint 22.2
Whiting 22.2
EPK 11.1
Zinc 7.4
Add:
Rutile 3
Red Iron Oxide 3
Black Iron Oxide 3
Bentonite 2
B T V I read your work, I will read it again(language problems) and than I
will ask my questions!
Ababi
sharon@shoval.org.il
http://www.israelceramics.org/main.asp?what=gallery.htm
http://www.milkywayceramics.com/cgallery/asharon.htm
----- Original Message -----
From: John Hesselberth
To:
Sent: Saturday, June 03, 2000 05:12
Subject: Re: Glaze tests+ the glaze of the week
> Hi Ababi,
>
> I couldn't help noticing the unusual numbers in your unity column below.
> The percentage analysis more or less lines up with mine; however what
> have you done to get the left hand column which I presume to be unity
> numbers?? For this glaze recipe, i calculate the unity formula to be:
> silica 2.18 and alumina 0.251. Also calcium 0.617. The rest of my
> numbers are very different from yours also. At first I thought you might
> have put everything in unity, but that doesn't add up either. Please
> explain; my curiosity is getting to me.
>
> John
>
> Sharon31 wrote:
>
> >Here is Another glaze that I use, from Marty Anderson's list. It is a
warm
> >sandy brown. In some works I print leaves, in bone dry add manganese ,
> >clean with steel wool and fire. After glazing with this glaze I get
really
> >beautifull, yet delicate, results:
> >***********************************
> >Marty sandy brown
> >=================
> > Potash Feldspar..... 29.60 28.60%
> > Flint............... 22.20 21.45%
> > Whiting............. 22.20 21.45%
> > EPK................. 11.10 10.72%
> > Zinc................ 7.40 7.15%
> > Rutile.............. 3.00 2.90%
> > Red Iron Oxide...... 3.00 2.90%
> > Black Iron Oxide.... 3.00 2.90%
> > Bentonite........... 2.00 1.93%
> > ========
> > 103.50
> >
> > CaO 0.22 13.60%
> > MgO 0.00 0.05%
> > K2O 0.06 5.89%
> > ZnO 0.09 8.08%
> > TiO2 0.04 3.16%
> > ZrO2 0.00 0.03%
> > Al2O3 0.10 10.70%
> > SiO2 0.80 52.43%
> > Fe2O3 0.03 6.06%
> >
> > Cost/kg 3.94
> > Si:Al 8.31
> > SiB:Al 8.31
> > Expan 8.45
>
>
> John Hesselberth
> Frog Pond Pottery
> P.O. Box 88
> Pocopson, PA 19366 USA
> EMail: john@frogpondpottery.com web site: http://www.frogpondpottery.com
>
> "Pots, like other forms of art, are human expressions: pleasure, pain or
> indifference before them depends upon their natures, and their natures
> are inevitably projections of the minds of their creators." Bernard
> Leach, A Potter's Book.
>
>
____________________________________________________________________________
__
> 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.
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