Bill and Sylvia Shirley on thu 15 feb 01
Please forgive this intrusion into your busy lives. I
really hesitate to post this, due to it's lack of urgency,
and the fact that the ultimate future of the craft of
ceramics does not depend on it, but here goes:
Last week, I fired some cone 04 glaze samples. One of those
was called "Drabble", formulated by our friend Edouard
Bastarache, which I got from the Ceramics Web GlazeBase.
(Of course, I made a couple of substitutions.) It was
severely underfired at 04. Ugly brown, not melted much at
all, and felt like a cat's tongue.
Yesterday, I fired a load of cone 6, and decided to see how
Drabble looked at that temperature. It's on a red clay
(Flint Hills Clay) test tile. Well, it's beautiful. It's a
medium toasty brown with streaks like an honest to goodness
wood-fired wood ash glaze. Nicest where dipped twice. It
has a good feel, and shows carving well. It looks the most
"reduced" of any I've ever fired in my lowly electric kilns.
As I prepare to retest it, to make sure I didn't screw up
the recipe and to see if this result is repeatable, I
wondered:
A: If anyone else had tried this recipe, and what your
results were.
B: What "mistakes" could I have made which would have
caused these results? On my test record sheet, everything
is checked off correctly, so I don't think I forgot
anything. Could it be the difference between washed and
unwashed ash?
Here's the recipe:
----------------------------------
Drabble, cone 04 Oxidation
----------------------------------
Washed Hardwood Ash...50%
(I used unwashed, unidentified fireplace ash)
Custer Feldspar...15%
Ferro Frit 3134...20%
EPK...15%
Total...100%
Add:
Bentonite...2%
Ultrox...18% (I used Zircopax)
Red Iron Oxide...8%
----------------------------------
I appreciate any input, but please reply off list.
Thank you.
Sylvia Shirley
Pittsburg, Kansas
Edouard Bastarache on thu 15 feb 01
Hello Sylvia ,
I will send a scanned picture of it privately.
As you will see the surface is well melted.
Later,
Edouard Bastarache
Irr=E9ductible Qu=E9becois
Sorel-Tracy
Dans / In "La Belle Province"
edouardb@sorel-tracy.qc.ca
http://www.sorel-tracy.qc.ca/~edouardb/
----- Message d'origine -----
De : Bill and Sylvia Shirley
=C0 :
Envoy=E9 : 15 f=E9vrier, 2001 11:20
Objet : Non-emergency...Wood ash glaze cone 6 OX
> Please forgive this intrusion into your busy lives. I
> really hesitate to post this, due to it's lack of urgency,
> and the fact that the ultimate future of the craft of
> ceramics does not depend on it, but here goes:
>
> Last week, I fired some cone 04 glaze samples. One of those
> was called "Drabble", formulated by our friend Edouard
> Bastarache, which I got from the Ceramics Web GlazeBase.
> (Of course, I made a couple of substitutions.) It was
> severely underfired at 04. Ugly brown, not melted much at
> all, and felt like a cat's tongue.
>
> Yesterday, I fired a load of cone 6, and decided to see how
> Drabble looked at that temperature. It's on a red clay
> (Flint Hills Clay) test tile. Well, it's beautiful. It's a
> medium toasty brown with streaks like an honest to goodness
> wood-fired wood ash glaze. Nicest where dipped twice. It
> has a good feel, and shows carving well. It looks the most
> "reduced" of any I've ever fired in my lowly electric kilns.
>
> As I prepare to retest it, to make sure I didn't screw up
> the recipe and to see if this result is repeatable, I
> wondered:
>
> A: If anyone else had tried this recipe, and what your
> results were.
> B: What "mistakes" could I have made which would have
> caused these results? On my test record sheet, everything
> is checked off correctly, so I don't think I forgot
> anything. Could it be the difference between washed and
> unwashed ash?
>
> Here's the recipe:
> ----------------------------------
> Drabble, cone 04 Oxidation
> ----------------------------------
> Washed Hardwood Ash...50%
> (I used unwashed, unidentified fireplace ash)
> Custer Feldspar...15%
> Ferro Frit 3134...20%
> EPK...15%
> Total...100%
>
> Add:
> Bentonite...2%
> Ultrox...18% (I used Zircopax)
> Red Iron Oxide...8%
> ----------------------------------
>
> I appreciate any input, but please reply off list.
>
> Thank you.
>
> Sylvia Shirley
> Pittsburg, Kansas
>
>
_________________________________________________________________________=
___
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
Anita Rickenberg on thu 15 feb 01
Sylvia Shirley asked:
"A: If anyone else had tried this recipe, and what your
results were.
B: What "mistakes" could I have made which would have
caused these results? On my test record sheet, everything
is checked off correctly, so I don't think I forgot
anything. Could it be the difference between washed and
unwashed ash?
I appreciate any input, but please reply off list."
Speaking for myself, of course, I'd be interested in reading the =
responses.
Anita
| |
|
