Paul Lewing on sun 19 may 02
on 5/19/02 2:42 PM, Maid O'Mud at scuttell@ODY.CA wrote:
> My question is: is it the combination of rutile and tin oxide that =
> cause the gentle, yellow colour?
Yes. The yellow tone is coming from the iron in the rutile. About 8% of
rutile by weight is iron. The rest of rutile is titanium, which opacifies
the glaze and adds texture. This glaze probably has a combination of tin
and rutile because the inventor of it wanted it to be more opaque than that
much rutile was making it, but didn't want any more texture. Also the tin
could be producing a very particular shade of yellow that that person liked
better than just rutile alone. If I were you, I'd try more combinations of
rutile and tin to see what the effect would be.
If yes, can I use the same ratio of =
> rutile/tin and get the same colour using one of R&J's bases?
Probably. Maybe. Different glaze bases respond differently to colorants,
but some shade of pale yellow is the likely result in almost any glaze base.
The bottom line is, no matter how you think it might turn out, no matter
what anyone says here, test it! Test everything you can think of!
Good luck,
Paul Lewing, Seattle
Maid O'Mud on sun 19 may 02
I greatly appreciate all the responses I received, both public and =
private. I may actually be learning the glazing end of things !!
My question is: is it the combination of rutile and tin oxide that =
cause the gentle, yellow colour? If yes, can I use the same ratio of =
rutile/tin and get the same colour using one of R&J's bases? (Ok, I =
lied - 2 questions).
Thank you in advance for any answers you can provide :-)
Original glaze in question follows....
BUTTER SATIN GLOSS (Carol Tripp)
36 custer feldspar
20 Frit 3124
16 Talc
20 EPK: I calcine half of this so it's 10 regular and 8.6 calcined
8 Wollastonite
3% Tin Oxide
5% rutile
Sam - Maid O'Mud Pottery
Melbourne, Ontario CANADA
"First, the clay told me what to do.
Then, I told the clay what to do.
Now, we co-operate."
sam 1994
http://www.ody.ca/~scuttell/
Ababi on mon 20 may 02
I believe it will make gentle straw color. You can try and compare with
6 ultrox/zircopax to learn the different.
---------- Original Message ----------
>I greatly appreciate all the responses I received, both public and
>private. I may actually be learning the glazing end of things !!
>My question is: is it the combination of rutile and tin oxide that
>cause the gentle, yellow colour? If yes, can I use the same ratio of
>rutile/tin and get the same colour using one of R&J's bases? (Ok, I
>lied - 2 questions).
>Thank you in advance for any answers you can provide :-)
>Original glaze in question follows....
>BUTTER SATIN GLOSS (Carol Tripp)
>36 custer feldspar
>20 Frit 3124
>16 Talc
>20 EPK: I calcine half of this so it's 10 regular and 8.6 calcined
>8 Wollastonite
>3% Tin Oxide
>5% rutile
>Sam - Maid O'Mud Pottery
>Melbourne, Ontario CANADA
>"First, the clay told me what to do.
>Then, I told the clay what to do.
>Now, we co-operate."
>sam 1994
>http://www.ody.ca/~scuttell/
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