search  current discussion  categories  kilns & firing - misc 

^ 6 oxidation notes

updated sat 31 may 97

 

"Rafael Molina-Rodriguez (Rafael Molina-Rodriguez)" on thu 9 jan 97

Clayarters :

The following are some glazes I've tested recently with good results :

Blue Hare's Fur ^ 6 oxidation (^ 7 in sitter) from ClayTimes

Neph Sy 47.3
Gerstley Borate 27.0
Silica 20.3
EPK 5.4
100.0
Add :
Red Iron Oxide 2.0
Cobalt Oxide 1.0
Rutile 4.0
Bentonite 2.0

Very nice glaze. Glossy texture. Visual texture, mottling. Blue gray
color. Also fired in Soda to ^ 7 with similar color and texture.


Black ^ 6 Oxidation (^ 7 in sitter) from Brian Kemp off Clayart

Potash Feldspar 42
Silica 26
Whiting 15
Kaolin 15
Zinc Oxide 12
Red Iron Oxide 8
Cobalt Oxide 1

Very nice glaze. I did increase colorants a small percentage each to RIO
10 and Cobalt 2. Semi-gloss to gloss texture. Deep blue-black to black
color. Also fired in Soda to ^ 7 with similar results.


VC Cr Black Satin Matte ^ 6 oxidation (^7 in sitter)Karen Gringhuis/Clayart

Soda Feldspar Kona F4 20
Neph Sy 20
Dolomite 13
Talc 13
Whiting 4
Ball Clay 8
Flint 22
100
Add :
Chrome Oxide 1
Red Iron Oxide 3
Manganese Dioxide 2
Cobalt Oxide 3

Nice color. Very dry matt texture. I believe it needs the 7 % to 10 % Frit
3185 she suggests for this temperature. Also fired in ^ 7 Soda with
similar results. I will add frit and fire new tests.

Rafael
rmr3431@dcccd.edu

"Rafael Molina-Rodriguez (Rafael Molina-Rodriguez)" on sun 16 mar 97

Clayarters :

I tested Peggy Heer's Antique White glaze recently. Very nice white
gloss glaze. It is so nice I've adopted it as a class glaze.

Antique White ^ 6 Oxidation (^ 7 in sitter)

Volcanic Ash 35.0 (I ordered Pumice from Seattle Pottery Supply)
Colemanite 12.5
Kaolin 2.5
Zircopax 11.0 (I used Ultrox)
Whiting 12.0
Bentonite .5

Good luck!

Rafael

"Rafael Molina-Rodriguez (Rafael Molina-Rodriguez Rafael on fri 18 apr 97

Clayarters :

The following are some glazes I've recently tested :

Deep Purple ^ 6 Ox (^ 7 in sitter. From Jan Walker/Clayart)

Gerstley Borate 8.4
Neph Sy 14
Potash Feldspar 27
Whiting 12
Lithium Carb 3.7
Magnesium Carb 1.7
Flint 33
Bentonite 2
Tin Oxide 5
Cobalt Carbonate 0.6
Chrome Oxide 0.17

Indeed, a very deep purple even on the dark stoneware it was tested on.


Gibby's Rutile ^ 6 Ox (^ 7 in sitter. From Gibby and Dave Gibson)

Lithium Carb 10.5
Bone Ash 10.5
Neph Sy 61.5
Tile 6 Kaolin 17.5 (I used EPK)
100.0
Add :
Rutile 10 %

Very nice matt, light tan/yellow with orange specks.


Blue Spruce ^ 6 Ox (^ 7 in sitter. From Clay Times)

Whiting 20.0
Frit 3124 25.0
Neph Sy 25.0
EPK 15.0
Flint 15.0
Zircopax 10.0
Copper Carb 2.0
Rutile 5.0

Nice gloss texture. Not blue. It's lime green. Is anyone on the list familiar
with this glaze? Perhaps, colorants are incorrect.

Good luck!

Rafael
rmr3431@dcccd.edu

"All good things...come by grace and grace comes by art and art does
not come easy." Norman MacLean, A River Runs Through It.

"We all share a creative goal with art. The goal is difficult; it is an
invitation to change the world. We can expect that our strength will be
spent, used up in a difficult struggle. We will arrive exhausted like a fly
in the evening of its only day of life.

But the "difficult' has never been a reason for not trying. And perhaps in
the end the only unforgivable sin is the refusal to try." Brother Thomas
Bezanson, Gifts from the Fire : The Porcelains of Brother Thomas.

Sherry mcDonald Stewart on sun 20 apr 97

Rafael has some interesting quotes, inspirational to say the least. I
like that. I would like to see a discussion on the importance of, "an
invitation to change the world!" To me, it is more of a quest of not
joining the wayward world, adding to it's strenght in going in a
direction that seems to be perverted. As artist, idealist, I struggle
with this world that seems to think building weapons is more worthwhile
than making things with clay, or creating other works of art, in a
variety of mediums, and expressions. I need to hear the encouraged words
of others, the experiences of others, as they struggle, as they have
struggled.
Our culture has become so much of a "spectator oriented culture," we
listen to others music, look at others paintings, watch others dance,
view others pots! Appreciation comes in doing these things, not just
observing, and leaving to go back to a world unfit for humans to grow,
and to be.
Do any of you know Andy Goldsworthy's work? It is obvious that since
early in his life, he has played, and he has had a belief in his play,
and the sculptures that he makes from nature are incredibly wholesome.
He also gets paid! Publishes his books of photographs of his work. He
has found a way.
I am trying to find my way. I play with poeple on the beaches, building
sculptures, that wash out to sea, but the memory never vanishes in the
minds of the participants. I conceptualize, and by doing so, I have
given much to communities, yet, I am not paid. Does the lack of pay make
me less? Sometimes I feel so! I am sure you all do. I need your
encouragement! Anyone? Everyone?

Michelle H. Lowe on sun 20 apr 97


> Blue Spruce ^ 6 Ox (^ 7 in sitter. From Clay Times)
>
> Whiting 20.0
> Frit 3124 25.0
> Neph Sy 25.0
> EPK 15.0
> Flint 15.0
> Zircopax 10.0
> Copper Carb 2.0
> Rutile 5.0
>
> Nice gloss texture. Not blue. It's lime green. Is anyone on the list famili
> with this glaze? Perhaps, colorants are incorrect.

Isn't Blue Spruce the name of an evergreen tree? Perhaps it's not
meant to be "blue" but rather the sort of leaning toward blue
evergreen color?

Just a thought :-)

Mishy
Michelle Lowe, potter in the Phoenix desert \|/ |
mishlowe@indirect.com -O- | |
mishlowe@aztec.asu.edu /|\ | | |
|_|_|
http://www.amug.org/~mishlowe ____ |
-\ /-----|-----
( )
<__>

LizzardOL@aol.com on tue 22 apr 97

Original message: "Rafael has some interesting quotes, inspirational to
say the least. I like that. I would like to see a discussion on the
importance of, "an invitation to change the world!" To me, it is more of a
quest of not joining the wayward world, adding to it's strenght in going in a
direction that seems to be perverted. As artist, idealist, I struggle
with this world that seems to think building weapons is more worthwhile than
making things with clay, or creating other works of art, in a variety of
mediums, and expressions. I need to hear the encouraged words of others, the
experiences of others, as they struggle, as they have struggled. . . . I am
trying to find my way. I play with poeple on the beaches, building
sculptures, that wash out to sea, but the memory never vanishes in the minds
of the participants. I conceptualize, and by doing so, I have given much to
communities, yet, I am not paid. Does the lack of pay make
me less? Sometimes I feel so! I am sure you all do. I need your
encouragement! Anyone? Everyone?"

I had several reactions to the above post, not all of them encouraging. Like
Sherry, I thoroughly enjoyed Rafael's quotes. The exchange of money has
nothing to do with the value of an activity ( if you haven't already, check
out the film about Marilyn Waring ("Sex, Lies, and Global Economics"). But I
can't for the life of me see how constructing sculptures that wash out to sea
significantly changes the world except maybe you are creating very small
artificial reefs for aquatic life. Pottery for the potter is fun,
challenging, sometimes therapeutic. For the audience/users it is useful,
gratifying; for the very perceptive it may be thought provoking. But get
real. If you want to change the world there are far more effective means.

Liz Dodge
Berkeley

"Rafael Molina-Rodriguez (Rafael Molina-Rodriguez)" on wed 7 may 97

Clayarters :

Frank Helme sent me the correct recipe for Blue Spruce :

Blue Spruce ^ 6 Oxidation ( I fire with a ^ 7 in sitter)

Whiting 1000
Frit 3124 1250
Neph Sy 1250
Kaolin 750
Flint 750
Zircopax 500 ( I use Ultrox )
Copper Carb 100
Cobalt Carb 100
Rutile 250

The recipe published in ClayTimes left out the Cobalt Carb. I remixed and
retested and it is an improvement over the lime-green. A semi-gloss to
glossy texture. The color is a soft blue gray with some visual
texture/mottling. I also fire it in a ^ 7 Soda in reduction and its a more
intense blue.

Good luck!

Rafael
rmr3431@dcccd.edu