Alisa og Claus Clausen on mon 5 mar 01
Dear Clayart,
In addition to Linda's methods, I will add some of the ways I use wash =
on my pots.=20
I mix the oxides, cobalt, iron or ochre, is what I use mostly; with an =
addition of ball clay and also rutile. I have no weights or percents. =
In knowing the strenghts of your oxides, say 1% of cobalt or 10% iron, I =
more or less eyeball the rest. So, if I mix up 1/4 of a teaspoon of =
cobalt, I use a teaspoon of rutile and two teaspoons of ball clay. If =
it is iron, I use a teaspoon of iron with ca. 1 1/2 teaspoons of rutile =
and 3 teaspoons of ball clay. I also vary the ball clay and water =
according to the consistency I will want to brush with. Not scientific, =
but the additives have their purposes.
The ball clay gives the wash a thicker cosistency and the rutile dampens =
the colors. If you use the cobalt mix above with a glaze, you can =
result with a dark blue that is matt. I have also found these mixes to =
be rather stable under and over glazes, with definite edges. I also use =
the cobalt mix as is on unglazes stoneware cone 6, and it is a nice =
contrast.
If you are looking for just a very washy look, painted on and rubbed =
off, then these mixes would not have any advantage over just oxide and =
water as I know them.
I normally brush my washes on greenware, because I have a lower risk of =
disturbing the decoration. They get painted and into the kiln. Then, as =
bisqued, I can handle them and decide what next to do, glaze, etc. =
Often I am careless enough with painted oxides on bisqueware, that I =
handle them and smudge the oxides or get oxides on my fingers and later =
see it migrated to glazes pots, etc.
Good luck,
Alisa in Denmark
Alisa og Claus Clausen on sun 11 mar 01
Dear Joyce,
I have sprayed pots with a mixture of soda ash and rutile. Cautioned by =
Dannon's notes on not using soda ashly too thickly because it will most =
likely produce a glass bottle green, I sprayed it rather lightly, but =
well coated. I let them sit over night and I could see them glistening =
from the soda ash. The rutile provoked a very warm orange with brownish =
nuances. They were very successful in terms of warm color, no =
glassiness, and some of them had a slight glitter liked crushed =
reflective stones. Ilmenite, Iron titanate FeTiO3 or FeO.TiO2, the ore =
of titanium and iron (I am using my Hamer and Hamer). Then I remember =
also Rutile, TiO2, natural titanium oxide with up to 15% iron oxide. =20
So, I am thinking that the additon of Ilmenite to the Soda ash and =
rutile mixture could cause it be browner with more spotting. Let me =
know. Since I am reading only for conclusion and have not tried it,I am =
sure Gurus, Tom, Dannon, have much more specific ideas about the =
results.
Best regards,
Alisa in Denmark
I found my voice today, the fjord calls me when it
gets over 9c and the sky is grey. Not a special day in=20
Aabenraa...but in the winter the water is so clear,
no algae, no jelly fish, no big red burning jelly fish,
just crystal clear water right down. It is great. Life
is good!
=20
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