pdp1@EARTHLINK.NET on sat 10 nov 07
Hi Lili, all,
You mention -
> I read once that the "ancients" used blood in their glazes for
> better adhesion, and speculated that celadons may have originated there.
> I
> wanted someone to try it
Probably yes...if not definitely yes...
Blood, and, Milk, as well as various Plant or Seed derived Saps, epressed
Oils or juices... were the Historical bases for adhesives, agglutinants, and
Paints.
These then, as well as likely other things, could allow Glazes to adhere
better, I am sure.
Are there any known occasions or references of Oil Base Glazes anyone knows
of?
Phil
l v
----- Original Message -----
From: "Lili Krakowski"
> It is someplace in Leach's book, and Frans Wildenhain used to mention it a
> lot. We are overrefined and oversophisticated.
> For instance we add stuff to our cobalt to make it look more like the
> original cobalt whose effects we so admire on ancient pots.
> Yes cobalt costs a lot, so does everything these days, and but in the
> Cardew
> recipe I sent it is only a tidge under 20%.
>
> Also: SO many flush the cobalt down the drain! NO! STOP! Have one or two
> rinse jars for each color you use. When you have done your breathtaking
> brush work with the cobalt, rinse the brush and the cup etc into a rinse
> jar. Let the stuff dry and reuse.
> Use a rinse jar for the pan etc as well....When you scrape glaze off a
> foot,
> save it. Do not return to mother-jar but keep, dry, test.
> Save the first rinse water from your glaze pans...Again save, dry, test,
> use.
>
> As to reduction: I always have been told that NO ONE in the ancient past
> PLANNED to reduce! (Not their weight, you sillies, their kilns. Famine,
> drought, flood, disease took care of their avoirdupois!) Reduction is a
> natural byproduct of wood firing...They did not sit there and say: "Oh,
> wow,
> having hauled that wood off the mountain and cut and split and stacked and
> dried and lugged and heaved and like that, we now are going to waste it!"
> Reduction comes with stoking--as Mr Hendley told us this a.m.
>
> Some time ago I asked for help in testing something I had long speculated
> about. I read once that the "ancients" used blood in their glazes for
> better adhesion, and speculated that celadons may have originated there.
> I
> wanted someone to try it....Anyway, Ron Roy offered and turned out little
> samples that sit on my treasure shelf now.And yes: blood turned a
> colorless
> glaze celadon. You do not need heroics to test this. Get some chicken
> livers at the butcher's, and use the liquid...I suppose you could use the
> livers themselves if you blenderized them, but why not eat them, or feed
> to
> cat?
>
> And yes. I also think some gorgeous copper reds came from storing glazes
> in
> bronze or copper vessels. But that is for
> someone else to try.
>
> Lili Krakowski
> Be of good courage
Lili Krakowski on sat 10 nov 07
It is someplace in Leach's book, and Frans Wildenhain used to mention it a
lot. We are overrefined and oversophisticated.
For instance we add stuff to our cobalt to make it look more like the
original cobalt whose effects we so admire on ancient pots.
Yes cobalt costs a lot, so does everything these days, and but in the Cardew
recipe I sent it is only a tidge under 20%.
Also: SO many flush the cobalt down the drain! NO! STOP! Have one or two
rinse jars for each color you use. When you have done your breathtaking
brush work with the cobalt, rinse the brush and the cup etc into a rinse
jar. Let the stuff dry and reuse.
Use a rinse jar for the pan etc as well....When you scrape glaze off a foot,
save it. Do not return to mother-jar but keep, dry, test.
Save the first rinse water from your glaze pans...Again save, dry, test,
use.
As to reduction: I always have been told that NO ONE in the ancient past
PLANNED to reduce! (Not their weight, you sillies, their kilns. Famine,
drought, flood, disease took care of their avoirdupois!) Reduction is a
natural byproduct of wood firing...They did not sit there and say: "Oh, wow,
having hauled that wood off the mountain and cut and split and stacked and
dried and lugged and heaved and like that, we now are going to waste it!"
Reduction comes with stoking--as Mr Hendley told us this a.m.
Some time ago I asked for help in testing something I had long speculated
about. I read once that the "ancients" used blood in their glazes for
better adhesion, and speculated that celadons may have originated there. I
wanted someone to try it....Anyway, Ron Roy offered and turned out little
samples that sit on my treasure shelf now.And yes: blood turned a colorless
glaze celadon. You do not need heroics to test this. Get some chicken
livers at the butcher's, and use the liquid...I suppose you could use the
livers themselves if you blenderized them, but why not eat them, or feed to
cat?
And yes. I also think some gorgeous copper reds came from storing glazes in
bronze or copper vessels. But that is for
someone else to try.
Lili Krakowski
Be of good courage
Linda White on sun 11 nov 07
>
>> I read once that the "ancients" used blood in their glazes for
>> better adhesion, and speculated that celadons may have originated
>> there.
>> I
>> wanted someone to try it
>
>
> Probably yes...if not definitely yes...
>
> Blood, and, Milk, as well as various Plant or Seed derived Saps,
> epressed
> Oils or juices... were the Historical bases for adhesives,
> agglutinants, and
> Paints.
As well as flour (makes a great white glue with water even now) and
eggs (egg tempera anyone?)
Linda White
LickHaven Pottery
Dushore PA
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