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plum glaze

updated thu 9 sep 99

 

Wade Blocker on wed 1 sep 99


Dear Veena, What cone do you fire at? I have three plum colored recipies
for cone 9 to l0 which I would be happy to put on the clayart web.
Laguna, inspite of all the bad publicity for their clays, has a good plum
temmoku dry glaze cone 9 to l0 in their catalogue. Mia in sunny ABQ

Veena Raghavan on thu 2 sep 99

Mia,
Thanks so much for your offer. Unfortunately, I only have access to
Cone 6 electric firing at the studio where I do my work. Do you by any
chance have any Cone 6, or do you think any of the recipes you have could
be altered to fire at Cone 6? I have tried a couple of plum like glazes
using the chrome/tin combination, but they are more pink than plum. What I
am looking for is a rich plum.
Thanks for your offer. I really appreciate it. Would love to fire
higher, but for the present, it is not in the cards.
All the best.
Veena

Veena Raghavan
75124.2520@compuserve.com

Lois Ruben Aronow on fri 3 sep 99

------------------
Veena -

Here is the recipe for the plum we use in our studio. It goes white
where thin, and looks great on dark clays. Not so hot on white
bodies. It is a lovely red wine (merlot, perhaps) colour, which
breaks white where thin. if you use it, let me know how it turns out.
And yes, it is =5E6 ox.

Pumice 52
Gerstley borate 19
EPK 4
Whiting 18
Tin oxide 7
Potass. bichromate 0.7

Bentonite 1


Potassium bichromate is a weird orange chemical. Ceramics Supply of
NY/NJ stocks it.

....Lois in brooklyn

On Thu, 2 Sep 1999 12:14:06 EDT, Veena Raghavan wrote:

=3E----------------------------Original message----------------------------
=3EMia,
=3E Thanks so much for your offer. Unfortunately, I only have access =
to
=3ECone 6 electric firing at the studio where I do my work. Do you by any
=3Echance have any Cone 6, or do you think any of the recipes you have could
=3Ebe altered to fire at Cone 6? I have tried a couple of plum like glazes
=3Eusing the chrome/tin combination, but they are more pink than plum. What =
I
=3Eam looking for is a rich plum.
=3E Thanks for your offer. I really appreciate it. Would love to fire
=3Ehigher, but for the present, it is not in the cards.
=3E All the best.
=3EVeena
=3E
=3EVeena Raghavan
=3E75124.2520=40compuserve.com

Gregory D Lamont on fri 3 sep 99

At 12:14 PM 9/2/99 -0400, you wrote:
>----------------------------Original message----------------------------
>Mia,
> Thanks so much for your offer. Unfortunately, I only have access to
>Cone 6 electric firing at the studio where I do my work. Do you by any
>chance have any Cone 6, or do you think any of the recipes you have could
>be altered to fire at Cone 6? I have tried a couple of plum like glazes
>using the chrome/tin combination, but they are more pink than plum. What I
>am looking for is a rich plum.
> Thanks for your offer. I really appreciate it. Would love to fire
>higher, but for the present, it is not in the cards.
> All the best.
>Veena
>
>Veena Raghavan
>75124.2520@compuserve.com

Try this one, Veena. I haven't tried it, so I can't vouch for food safety:

Plum Purple (C/6 ox.)

Custer feldspar 34
Dolomite 5
Whiting 8
EPK 8
Flint 27
Zinc oxide 7
Frit P-25 6

Add:
Nickel carbonate 5

Greg


Greg Lamont
gdlamont@iastate.edu
http://www.ourwebpage.net/greglamont/

3011 Northwood Drive
Ames, IA 50010-4750
(515) 233-3442

L.P. Skeen on fri 3 sep 99

Veena Raghavan wrote:

> I have tried a couple of plum like glazes
> using the chrome/tin combination, but they are more pink than plum. What I
> am looking for is a rich plum.

Veena,
Take your best Cr/Sn pink and add 1/2% Cobalt carb. You should get a nice
purple - I did.
--
Lisa Skeen ICQ#15554910 http://www.living-tree.net
Living Tree Pottery & Soaps, Summerfield, NC
~*~* A clean house is a sign of a misspent life.*~*~
@}~~~ Religions should get out of politics or be taxed.~~~{@

Wade Blocker on fri 3 sep 99


Veena,

I do not have a cone 6 plum glaze that I have tested. I would
choose a base glaze recipe that does well for you and which does not
contain zinc. I would then add the following Mason stain #6385 Pansy
purple, until you get the shade of purple that you are looking for.A small
amount of stain is not that expensive. I would start with 5% of stain and
then go to l0% until you reach the desired color. I do have a recipe
from clayart that is described as a satin matt medium purple which has been
blessed by Ron Roy.
Perhaps an increase of the coloring oxides can give a darker shade.

Eggplant Purple cone 6

Kona spar (soda spar) 45.7
Flint l5.2
Talc l2.7
Colemanitel2.9
EPK 4.5
add bentonite l.0
cobalt carb 2.0
manganese carb. 5.0

Hope this is of some help. Mia in sunny ABQ

Wade Blocker on fri 3 sep 99


Here are some recipies for plum colored glazes:


Emily Purple cone 9/10

potash spar 4l.0
colemanite l2.0
dolomite 7.0
talc l5.0
ball clay 5.0
flint 20.00
add
bentonite 2.0
cobalt oxide2.0
tin oxide 2.0




Seacrest Purple cone 9-10

potash spar 53.7
whiting l2.9

colemanite 2.5
kaolin 6.0
flint 22.4
zinc oxide 2.5

add
black FE oxide 3.0
rutile 3.0



Iron red Plum C9 to 10


Cornwall Stone 42.2
dolomite 4.5
zinc oxide l.0
whiting ll.2
kaolin l3.6
fling 27.5

add
bentonite 2.0
red Fe oxide ll.5


The above recipies came from Penland School. I hope they work for you.

I was asked if they can be lowered to fire to cone 6. Other than
substituting neph syenite for the felspar, and adding some frit I would not
know how to. I dare say the character of the glaze would be changed also.
But there is nothing like testing to find out. Mia in ABQ, where we are
getting our daily thundershowers
























tash spar 53.7

Wade Blocker on wed 8 sep 99

Dear Mo and Les,
Seacrest purple recipe is correct as printed. This came from my
glaze collection when I fired from cone 9-l0. As far as I know I must have
tried it. Purple is not my favorite color, so I have no notes with the
recipe. It originated in the Penland School of Arts. This recipe requires
reduction firing. I sent the three highfire purple recipies in response to
a query for them. For the past decade my glaze firing is in the cone 5 to 7
range in an electric kiln. Mia in sunny ABQ