D Beverlin on sat 11 oct 03
I am testing yellows and have not found the one. But Otto's yellow looks
great. Any ideas as to what are the ingredients?
have a sunshine day all
darlene
June Perry on sat 11 oct 03
Try a high calcium(about 19-20% Whiting) matt with a little bit of magnesia
(talc or magnesium carb), Spar, about 1-2% iron oxide and 10-15% Zircopax.
Vivika gave me a recipe base in the early 80's which gives me various tones
of yellows and golds using iron alone, rutile alone or a combination of both.
The rutile with iron can make it go peachy.
I don't know if this is the glaze that Otto is currently using -- probably
not, since he didn't come up with the current yellow until after Vivika had
passed over. I haven't asked him. I know that he doesn't have the glaze written
down, so I'm assuming it is either a different glaze or a variation on the one
Vivika gave me.
Vivika's has magnesium zirconium silicate in it which is not always readily
available from local suppliers. I have it on my website in the cone 10 test
tiles pages.
If you use some of the guidelines I mentioned above, that will give you a
good starting point. There are a lot of calcium/magnesium matt recipes out there.
You can take one of those, add about 10-15% zircopax, 1-2% iron and get a
light yellow. You might also want to try some tin oxide (3-5%) instead of the
Zircopax.
The color will be more intense on an iron bearing body, so if you are using a
white stoneware, you will have to up the iron, maybe 2- 3%.
Regards,
June Perry
http://www.angelfire.com/art2/shambhalapottery/
Ababi on sat 11 oct 03
The Japanese government will pay you a lot for your inquiry!
If you will be more humble and go down to ^6 I might be able help you.
Ababi Sharon
Glaze addict
Kibbutz Shoval Israel
ababisha@shoval.org.il
http://members4.clubphoto.com/ababi306910
http://www.matrix2000.co.nz/Matrix%20Demo/Ababi.htm
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of D Beverlin
Sent: Saturday, October 11, 2003 11:29 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Otto's Yellow
I am testing yellows and have not found the one. But Otto's yellow
looks
great. Any ideas as to what are the ingredients?
have a sunshine day all
darlene
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Hollis Engley on sat 11 oct 03
Subject: Otto's Yellow
> I am testing yellows and have not found the one. But Otto's yellow looks
> great. Any ideas as to what are the ingredients?
>
> have a sunshine day all
>
> darlene
>
Darlene: I don't know about Otto's yellow, but here's a cone 10 one from
Alleghany Meadows. Alleghany was a resident assistant at Anderson Ranch when
I was there maybe seven years ago. The yellow stands up to the high firing
temps. He used it in the soda kiln, too. Alleghany said that he'd formulated
the glaze one long Colorado winter when it seemed they'd never see the sun
again. (As I add up the numbers from the Anderson Ranch glaze book, I see
that it doesn't add up to 100 percent. So ... I don't have a good answer for
that, though I'm guessing it's not a discrepancy, just a non-conforming
recipe.)
Hollis Engley
Hatchville Pottery
Falmouth, Mass.
hengley@cape.com
Meadow Yellow
Custer spar 48
Whiting 20.4
Talc 15.6
EPK 3.6
Silica 33.6
---
Bentonite 3.6
Praesidium Yellow Mason Stain 20 percent
>
Wyndham Dennison on thu 7 aug 08
>
> Wagoner, Charles on tue 24 sep 02
>
> Otto's Swedish Mat (Waxy Yellow) Cone 10 (Barium Toxic!)
>
> Needs a lot of reduction
>
> Feldspar 520
>
> Whiting 90
>
> Zinc Oxide 80
>
> Barium Carb 210
>
> Ball Clay 100
>
> Flint 30
>
> Rutile 20
>
> Red Iron 42
>
If this is the famous yellow, why not sub Strontium carb, somewhere
around 180 and drop the zinc to start a line test and maybe add a bit of
zircopax back in to whiten the base. Also in this list I think it's by
grams not % but not a problem. If it's too dark maybe sub Spanish red
iron as it tends to be a little lighter or use yellow orcher to be more
even in color distribution.
Any thoughts on the matter?, Wyndham
James F on thu 7 aug 08
Wyndham...
FWIW=2C I tried subbing Sr for Ba in Alfred/Woo Yellow=2C a chemically clos=
e relative of this glaze. Went from a beautiful mustard yellow to a harsh=
=2C nasty greenish-yellow=2C replete with typical strontium pinholes. Sr m=
ight sit right next to Ba in the spice cabinet=2C but they sure taste diffe=
rent. YMMV.
All the best.
...James
> If this is the famous yellow=2C why not sub Strontium carb=2C somewhere
> around 180 Wyndham
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Get Windows Live and get whatever you need=2C wherever you are. Start here=
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