May Luk on tue 2 nov 04
Hi all;
I had started some high alkaline glaze test with my informal glaze group.
I'm brainstorming some test that we can do as a group. I was thinking we
could do some currie grids to see how they fire in different kilns, as well
as using different colourants to see colour responses. Other than that, I'm
just not very good with finding starting points.
I also would like to test to see how the high expansion / crazed glaze
weaken the pot. What would be a good systematic way to do it? BTW, I don't
have a fridge or a freezer at the studio, if that matters.
Thank you in advance for your suggestions
May
London, UK
John K Dellow on wed 3 nov 04
May,
I have recently done a C10 Alkaline currie set . I started with his C6
base and reworked to C10 with Insight.
Eckalite 2 (Kaolin) 5.83
Ferro Frit 4110 52.45
Silica 34.19
China Clay Q38 (Australian) 2.92
Alumina Hydrate 4.61
Then generated a currie set with Ferro Frit 4110 as the flux. The corner
glazes .
Frit 4110 Kaolin Silica
A (1) 180.00 120.00 0
B (5) 105.00 75.00 120.00
C (31) 300.00 0 0
D (35) 150.00 0 150.00
Fired to 1280 in an electric kiln.
John
John Dellow "the flower pot man"
From the land down under
Home Page http://www.welcome.to/jkdellow
http://digitalfire.com/education/people/dellow/
Gene Arnold on wed 3 nov 04
John
Is the recipe you posted the cone 6 ??? or is it the cone 10 ???
I have been looking for sometime for a good cone 6 ox high alkaline base to
do some testing.
If this is the cone 10 would you share the cone 6???
Or if anyone else has a good cone 6 high alkaline base glaze I would like to
do some testing.
Gene & Latonna
mudduck@mudduckpottery.com
www.mudduckpottery.com
May Luk on wed 3 nov 04
Hello John;
Thanks for the info. Did you do any follow up test to the currie grid based
on your firing results; like with different colourants, opacifiers etc? Or
moved on to bigger batches. Would you be kind enough to share some of your
observations on your currie grid results?
Many thanks
May
John K Dellow on thu 4 nov 04
Gene Arnold wrote:
>John
>
>Is the recipe you posted the cone 6 ??? or is it the cone 10 ???
>
>I have been looking for sometime for a good cone 6 ox high alkaline base to
>do some testing.
>
>If this is the cone 10 would you share the cone 6???
>
>Or if anyone else has a good cone 6 high alkaline base glaze I would like to
>do some testing.
>
>
>Gene & Latonna
>mudduck@mudduckpottery.com
>www.mudduckpottery.com
>
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>
The one I posted was my C10 reworking of the C6 recipe in Ian Curries
second book. He has a colored pic of co lour graduations of oxides. This
was just a start and I did most of his colour graduations on a 10 part
line blend ,but the glaze its self needs a little twicking as it has a
slightly pine holed surface with copper, cobalt iron and manganese. The
chrome was smooth . And when I added small amounts of zircon , bone ash
and zinc the surface was mostly healed over.
John
--
John Dellow "the flower pot man"
From the land down under
Home Page http://www.welcome.to/jkdellow
http://digitalfire.com/education/people/dellow/
May Luk on thu 4 nov 04
Hi Gene;
In Mike Bailey's Glazes Cone 6, there's a high alkaline glaze recipe. I had
tested it briefly on small vertical tiles. It crazed and it gave good
colours. I have not yet mixed a big batch, so I don't know how runny it
would be on different shapes of pots.
May
London, UK
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