Kat Fode on tue 19 dec 00
HI ALL:
Have this Matte glaze that contains over 20% Zinc. I calicine half the
Zinc for better application. However I am worried about the amount of
Zinc,
It is obviously way over the limits, but there is also 8% lithium which
may
create a better melt. Does anyone know if that much Zinc could be
dangerous?
Should I just chuck this one? It looks rather interesting.
Kat in the Hat.
kat@digitalfire.com
Ababi Sharon on tue 19 dec 00
Hello one!
Do you mean this recipe?I added nickel and got beautiful blue, or beautiful
green, with the original titanium Matt blue^5 ^6
===============
WHITING............. 3.9 3.94%
ZINC OXIDE.......... 19.7 19.69%
LITHIUM CARBONATE... 9.4 9.45%
KAOLIN.............. 22.0 22.05%
QUARTZ.............. 43.3 43.31%
NICKEL OXIDE....... 1.6 1.57%
========
100.0
CaO 0.094* 2.248%w 2.824%m
Li2O 0.309* 3.918%w 9.265%m
K2O 0.017* 0.671%w 0.502%m
ZnO 0.579*20.036%w17.346%m
TiO2 0.001 0.022%w 0.020%m
Al2O3 0.185 8.006%w 5.532%m
SiO2 2.152 54.947%w64.432%m
Fe2O3 0.003 0.179%w 0.079%m
Cost/kg11.493
L.O.I. 9.974
Si:Al11.648
SiB:Al11.648
Expan 5.729
Notes:
Based on "matte white" from Pottery making Apply medium! Beautiful blue. Ron
Roy told me it was a weak glaze.You may use it , for decoration, above
/under, or just some drops above another glaze(Marty's Butterscotch likes
the treatment)
And the next time, write down the recipe:As you carry <
@DIGITALFIRE.COM !
Ababi Sharon
ababisharon@hotmail.com
http://www.milkywayceramics.com/cgallery/asharon.htm
http://www.israelceramics.org/index.html
* * * * * * * *
www.photoisland.com
ID: sharon@shoval.org.il
Password:clay
----- Original Message -----
From: "Kat Fode"
To:
Sent: Tuesday, December 19, 2000 5:36 PM
Subject: Matte Zinc Glase
> HI ALL:
> Have this Matte glaze that contains over 20% Zinc. I calicine half the
> Zinc for better application. However I am worried about the amount of
> Zinc,
> It is obviously way over the limits, but there is also 8% lithium which
> may
> create a better melt. Does anyone know if that much Zinc could be
> dangerous?
> Should I just chuck this one? It looks rather interesting.
>
> Kat in the Hat.
> kat@digitalfire.com
>
>
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John Hesselberth on tue 19 dec 00
Kat Fode wrote:
>Have this Matte glaze that contains over 20% Zinc. I calicine half the
>Zinc for better application. However I am worried about the amount of
>Zinc,
>It is obviously way over the limits, but there is also 8% lithium which
>may
>create a better melt. Does anyone know if that much Zinc could be
>dangerous?
>Should I just chuck this one? It looks rather interesting.
Hi Kat,
You'll have to give the complete recipe before anyone can offer an
opinion. Or you could just perform in-studio and professional leach
testing on it and see.
Regards, John
"The life so short, the craft so long to learn." Hippocrates, 5th cent.
B.C.
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