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cone 10 glaze

updated thu 6 apr 06

 

ASHPOTS@aol.com on mon 16 sep 96

HELLO ALL: I need a shiny rutile blue glaze, Cone 10. Anybody have one that
I could try?

Mark

Dave Murphy on tue 17 sep 96


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From: ASHPOTS@aol.com[SMTP:ASHPOTS@aol.com]
Sent: September 16, 1996 9:33 AM
To: Multiple recipients of list CLAYART
Subject: Re: CONE 10 GLAZE

----------------------------Original message----------------------------
HELLO ALL: I need a shiny rutile blue glaze, Cone 10. Anybody have one that
I could try?

Mark
Dear Mark:
Below is a glaze I have been using for years,
I got it out of CM. Likes a thick dip and I
also double dip rims. Does not like a long
soak at cone 10. Looks best at a good cone 9
(slightly satin with shiny spots) or 10 ( glossy
blue with mottling and crystals)

Potash Feldspar 32.2
Whiting 20.5
Flint 19.5
EPK 16.6
Talc 11.2

Rutile 8.3

Good Luck!
Barbara Murphy, Waterloo, Ontario


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James Dapogny on wed 18 sep 96

Dear Barbara,
When you say your rutile blue glaze doesn't like a long cone 10 soak, do
you mean while also oxidizing or while still continuing reduction? Have you
any idea what the reason is? I'm curious whether it's a re-oxidation
problem or something else.
Thanks. Gail Dapogny in Ann Arbor

Dave Murphy on sun 22 sep 96


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From: James Dapogny[SMTP:jdapogny@umich.edu]
Sent: September 18, 1996 8:57 AM
To: Multiple recipients of list CLAYART
Subject: Re: CONE 10 GLAZE

----------------------------Original message----------------------------
Dear Barbara,
When you say your rutile blue glaze doesn't like a long cone 10 soak, do
you mean while also oxidizing or while still continuing reduction? Have you
any idea what the reason is? I'm curious whether it's a re-oxidation
problem or something else.
Thanks. Gail Dapogny in Ann Arbor

Gail:
I soak in neutral until my cones go down
to where I want them. If my cone 9 on
the bottom takes a long time (1 hour) this
glaze tends to flow. I usually dip my bottoms
in a matt glaze with the rutile blue coming to
within an inch of the bottom. That way I can
so what I need to do without worrying about
pots sticking to the shelf. If you have a better
method of control then you wouldn't have to
worry. This is just for my particular firing
parameters.

Barb.

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Dave Hedblom on fri 11 oct 96

I was ask by some pottery friends to look for a glaze called 'Hi Ho Silver'.
From our understanding it was something Paul Soldner created.


dave hedblom
cobalt@winternet.com
The leaves are falling by the ton now in Minnesota.

Mark Issenberg on thu 14 nov 96

Howdy all: In Jack Troy's wood fired book, there's a couple of glazes that
list spodumene low melt or AMBLYGONITE. Is it different than other
spodumene? Miami Clay has spodumene from Australia that came in a bag on a
palette that is one ton. I need to go look at that bag. I have a shinotype
glaze that is 60% nepsy and 40% om4. I spray it thin and than I spray it
with some of my ash glaze and it sure looks like it's been wood-fired since I
do not want to deal with a wood kiln. Anyway, let me know if anyone out
there knows what AMBLYGONITE is. Thanks.

Capt. Mark Issenberg
MADE IN THE SHADE PLANTS & POTTERY
7780 SW 118th Street
Miami, FL 33156
(305) 232-0278
(305) 232-0278 FAX

Bob Kavanagh on thu 14 nov 96

Parmelee gives a typical analysis of ambligonite, spodumene, lepidolite and
petalite on page 34 of "Ceramic Glazes" (3rd edition 1973, updated by
Harman). he suggests that spodumene has higher silica (a significant
difference here), alumina, potash and lower lithium and soda. The point of
interest is that phosphorous pentox. constitutes slightly more than 50% by
weight of amblygonite and there is none in spod.

bob kavanagh

Bill Seeley on tue 19 nov 96

Mark Issenberg wrote:
>..let me know if anyone out
> there knows what AMBLYGONITE is. Thanks.
> According to Pough's "Field Guide to Rocks and Minerals", 1960*, p.
207, it is described as a "Lithium aluminum fluophosphate" with the
following formula:

LiAl(PO4)(F,OH) and a percentage composition of

(Li2)O 10%
(Al2)(O3) 34.5%
(P2)(O5) 48.0%
F 12.8%

(and this cryptic note, perhaps accounting for the difference
between the sum of the above numbers and 100):

"But some of the F replaces the O, 5.4% of O equals F"

It is most often found in pegmatites or embedded in quartz or
feldspar. It's found in the US in South Dakota, California, and
Maine. I've never seen it advertised as a commercially available
mineral.


Bill

* There are probably more recent editions of this book, but
amblygonite probably hasn't changed much since 1960.

--
Theresa and William Seeley 410 486-3171 (voice)
Villa Nova Pottery 410 484-6273 (fax)
4015 Buckingham Rd. Baltimore, MD 21207
"186,000 miles/second is not just a good idea - its the law!"

Dr.Tom Roess on mon 21 dec 98

------------------
=3EThe one area I am hoping to get some info is in the area of glaze
recipies. Specifically for Cone 10 reduction.
Tim, the following is a cone 10 reduction glaze that also works well and
looks about the same at cone 7 oxidation.Ideal for a beginner classroom
situation where students don't know the difference. If anyone has any more
recipes for this kind of fool-proof glaze please pass them along. This one
came from the SDU data base, so perhaps you've seen it, but if you haven't
tried it I can recommend it.
BERRYRUST - Cranberry Rust Red
Cone: 7 - 10 Oxidation or Reduction
Percent Batch
Silica 27.27 136.4
EPK 18.18 90.9
Neph Syenite 18.18 90.9
Dolomite 9.09 45.5
Gerstley B 9.09 45.5
Talc 9.09 45.5
Bone Ash 9.09 45.5
Totals: 100.00=25 500.0 Gm
Also add:
Red Iron Oxide 9.09 45.5

Use Pure Red Iron Oxide .This glaze gives a fairly intense cranberry rust
in the cone 7-10 range and is quite consistent in its results.
Lou

Christina on wed 5 apr 06


Hi
I'm new here and looking for cone 10 purple glaze recipes.

Des & Jan Howard on thu 6 apr 06


Christina
Try Ceramics Technical No.11, 2000
"In Pursuit of the Perfect Purple"
It has recipes, firings & thoughts.
Des

Christina wrote:

>Hi
>I'm new here and looking for cone 10 purple glaze recipes.
>
>

--
Des & Jan Howard
Lue Pottery
LUE NSW 2850
Australia
Ph/Fax 02 6373 6419
http://www.luepottery.hwy.com.au