Tammy Young on wed 16 oct 02
Does anyone have info or know where I can find info on using oxides?
I have some iron oxide (red) and would like to know the various uses of it.
Someone told me to mix with water. I tried it and it doesn't seem to mix too
well.
For instance, how thick should the substance be? Should it be water-like? I
know the amount of oxide used probably depends on the degree of coloring I
would like. But should it have a thin or thick consistency? Also, could I mix
the oxide with a glaze?
If mixing oxide with only water - to what varying cones should it be bisque-
fired?
I am making beads with holes in them - If I were to just dip the beads in the
water-based mixture would the beads stick to the high temp wire when fired? I
avoid dipping with ordinary glaze as it sticks to the wire when fired.
Thanks for any help!
Marianne Lombardo on wed 16 oct 02
Tammy,
I have only done a little brushwork using oxides so far, although I plan on
doing more in future. You can mix the iron oxide with some water and add a
bit of CMC or glycerine and apply. I also tried mixing a bit of iron oxide
and water and added a little bit of frit 3134 and that worked well. In
general, it will be a thin consistency.
Come to think of it, I also dipped my brush into a base glaze and then into
some iron oxide and painted that way as well.
For applying to beads you might want to try dipping into a solution of iron
oxide and water, then sponge some of the excess away leaving an antique
look. That won't stick to the wire. Mixing with a glaze would probably
stick.
If you go to June Perry's website below, you will find some wonderful
information on mixing oxides.
http://www.angelfire.com/art2/shambhalapottery/index.html
Marianne Lombardo
Omemee, Ontario, Canada
email: mlombardo@nexicom.net
Cheryl Hoffman on wed 16 oct 02
Marianne,
Thanks for the great link to all that oxide info...everything I wanted
to know!
Cher Hoffman
Gail Dapogny on thu 17 oct 02
Hi Tammy,
If you are using Fe oxide by itself (mixed with water) it will be thin
("water-like" as you say), and you will have to be persistent about keeping
it in suspension, stirring it each time you're about to use it, obviously a
drawback. On the other hand, it is a wonderful addition to an unglazed
surface particularly over texture. Brush it on--the bisqued pot will take
the iron very thirstily, then sponge the top surfaces off (lightly or with
a heavy hand--according to what appeals to you) for variation and
gradations in the color. If you mix a lot of iron in the water, it will
be intense in the cracks and crevices where it remains--quite a dramatic
effect, often beautiful; or, you can mix it with much less iron so that it
goes on very lightly. Sorry I've never measured; I doubt that anyone else
has either. By the way, oily fingers can leave disconcerting prints on an
fired/unglazed surface so be careful of handling the pot.
Now, if you want more substance in the mixture, you could combine the oxide
with some clay (ball) and gerstley borate (or frit), plus water. (Some
people do this in roughly equal parts.) The gb (or frit) fluxes the
mixture a bit, and the clay slightly thickens it. That combination will
usually give you a slightly more substantial cover, possibly even the
tiniest gleam of glossiness. Mixing the oxide into a base glaze would give
you somewhat the same kind of thing only probably more substantial yet.
An iron-only mixture will not stick to your wire.
Good luck!
--Gail
>Does anyone have info or know where I can find info on using oxides?
>I have some iron oxide (red) and would like to know the various uses of it.
>Someone told me to mix with water. I tried it and it doesn't seem to mix too
>well.
>For instance, how thick should the substance be? Should it be water-like? I
>know the amount of oxide used probably depends on the degree of coloring I
>would like. But should it have a thin or thick consistency? Also, could I mix
>the oxide with a glaze?
>If mixing oxide with only water - to what varying cones should it be bisque-
>fired?
>I am making beads with holes in them - If I were to just dip the beads in the
>water-based mixture would the beads stick to the high temp wire when fired? I
>avoid dipping with ordinary glaze as it sticks to the wire when fired.
>Thanks for any help!
Gail Dapogny
1154 Olden Road
Ann Arbor, MI 48103-3005
(734) 665-9816
gdapogny@umich.edu
http://www.silverhawk.com/ex99/dapogny (single historical photo - no longer
registered with Silverhawk)
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