heidy on thu 17 dec 09
I like to use this glossy ^6 glaze (adapted to my materials) whose origin=
=3D
al was=3D20
posted on clayart:
Gerstley Borate 26.61
Feldspat K11 56.12
Kaolin 6.78
Dolomit 0.09
Silica 10.41
add:
Chrome Oxide 2
Titanium Dioxide 5
that way it is olive, if the TiO is replaced with Tin Oxide it is an opaq=
=3D
ue=3D20
medium green.
All the stains I have tested came out very true to their colour, although=
=3D
some=3D20
reds and the orange like to pinhole if applied too thick. As I read once =
=3D
that TiO=3D20
is not necessary in the base with stains, I leave it out. I have tested t=
=3D
he=3D20
stains with and without and seen no difference in colour.
I would now like to use this glaze as a clear and have tested it over eng=
=3D
obe=3D20
with and without the 5 Titanium Dioxide. I am not sure if I can see any=3D2=
0=3D
difference, maybe the test with the TiO is just a little bit more glossy.=
=3D
But=3D20
then this might be just a difference in application.=3D20
Hamer + Hamer says that from 5 % on it should opacify, but here it does n=
=3D
ot=3D20
seem to. So should I put in the TiO or better leave it out?
heidy
Ron Roy on thu 17 dec 09
Hi Heidy,
This is a high alumina glaze - a good thing if you don't want bubbles
in the clear glaze. No need for the TiO2 if you just want a clear.
RR
Quoting heidy :
> I like to use this glossy ^6 glaze (adapted to my materials) whose
> original was
> posted on clayart:
>
> Gerstley Borate 26.61
> Feldspat K11 56.12
> Kaolin 6.78
> Dolomit 0.09
> Silica 10.41
> add:
> Chrome Oxide 2
> Titanium Dioxide 5
>
> that way it is olive, if the TiO is replaced with Tin Oxide it is an opaq=
ue
> medium green.
>
> All the stains I have tested came out very true to their colour,
> although some
> reds and the orange like to pinhole if applied too thick. As I read
> once that TiO
> is not necessary in the base with stains, I leave it out. I have tested t=
he
> stains with and without and seen no difference in colour.
>
> I would now like to use this glaze as a clear and have tested it over eng=
obe
> with and without the 5 Titanium Dioxide. I am not sure if I can see any
> difference, maybe the test with the TiO is just a little bit more glossy.=
But
> then this might be just a difference in application.
>
> Hamer + Hamer says that from 5 % on it should opacify, but here it does n=
ot
> seem to. So should I put in the TiO or better leave it out?
>
> heidy
>
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