Ben on tue 7 sep 04
I'm looking for suggestions for a liner glaze for copper reds. My =
normal liner glaze is very grey in reduction, and I'm looking for =
something a little warmer color wise. I'm thinking of more like what =
you'd get out of 1/2 to 1% red iron oxide on oxidation over buff, but =
I'm not convinced that will work color wise either. I'm not necessarily =
looking for a recipe but maybe a glaze type and additions I can detail, =
or even just your all's personal sense or experience aesthetically with =
copper reds. I working cone ^8-10 with a modified version of Peter =
Pinnel's recipe from Burleson's(Sp?) book. But his is pink and mine is =
deep oxblood. I'm actually not fond of the color, I'd rather have =
something more variegated and lighter tone but this is what I have and =
everyone who comes in the shop goes straight to it so I'm trying to make =
it work aesthetically where I can at least live with it.
Thanks for any ideas,
Ben
Scott Paulding on tue 7 sep 04
Hi Ben (again :),
If you want to really, really set off the color of the copper red, you need a
complimentary color to red. As far as visual light is concerned (ie, not
pigment based), you need a cyan (the sky is cyanish). But I think a more
subtler version than sky blue would work well. Maybe a very subtle blue
celadon? I think the contrast of oxblood and light blue celadon would be great
aesthetically, but that's just me. Or, perhaps a very subtle oribe?
I use a liner called Chun White (you may have heard me asking questions about
this one in past posts). It is white, semi-opaque, has real depth (one friend
described it as bottomless). Very, very subtle blue hues. Especially under
tungsten light. Because of the high calcium content, it has a kind of waxy
texture (think candle wax), but it's glossy too because of the high silica. I
find it really makes the surface glaze pop (unless it's in a teapot or jar :).
If this sounds interesting to you, email me back privately (pldng@yahoo.com)
and I can send you the recipe. I hope this helps,
-scott
in rochester, ny
--- Ben wrote:
> I'm looking for suggestions for a liner glaze for copper reds. My normal
> liner glaze is very grey in reduction, and I'm looking for something a
> little warmer color wise. I'm thinking of more like what you'd get out of
> 1/2 to 1% red iron oxide on oxidation over buff, but I'm not convinced that
> will work color wise either. I'm not necessarily looking for a recipe but
> maybe a glaze type and additions I can detail, or even just your all's
> personal sense or experience aesthetically with copper reds. I working cone
> ^8-10 with a modified version of Peter Pinnel's recipe from Burleson's(Sp?)
> book. But his is pink and mine is deep oxblood. I'm actually not fond of the
> color, I'd rather have something more variegated and lighter tone but this is
> what I have and everyone who comes in the shop goes straight to it so I'm
> trying to make it work aesthetically where I can at least live with it.
> Thanks for any ideas,
> Ben
>
>
______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
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>
=====
"I should have been a plumber."
-Albert Einstein
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Ann Brink on tue 7 sep 04
Hi Ben, have you thought of adding more opacifier to your liner glaze?
Ann Brink in Lompoc CA
----- Original Message -----
From: "Ben"
To:
Sent: Tuesday, September 07, 2004 11:09 AM
Subject: Liner Glaze For Copper Red
I'm looking for suggestions for a liner glaze for copper reds. My normal
liner glaze is very grey in reduction, and I'm looking for something a
little warmer color wise. I'm thinking of more like what you'd get out of
1/2 to 1% red iron oxide on oxidation over buff, but I'm not convinced that
will work color wise either. I'm not necessarily looking for a recipe but
maybe a glaze type and additions I can detail, or even just your all's
personal sense or experience aesthetically with copper reds. I working cone
^8-10 with a modified version of Peter Pinnel's recipe from Burleson's(Sp?)
book. But his is pink and mine is deep oxblood. I'm actually not fond of
the color, I'd rather have something more variegated and lighter tone but
this is what I have and everyone who comes in the shop goes straight to it
so I'm trying to make it work aesthetically where I can at least live with
it.
Thanks for any ideas,
Ben
____________________________________________________________________________
__
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.
John Britt on tue 7 sep 04
Is this the same Chun White you are talking about? It is a nice glaze!
CHUN WHITE cone 10
F-4 Feldspar 34.06
Wollastonite 32.96
Silica 16.48
Grolleg Kaolin 10.98
Dolomite 5.49
Tin Oxide 2.20
Titanium Dioxide 7.69
John Britt
www.johnbrittpottery.com
Scott Paulding on tue 7 sep 04
Close, here's mine:
kona f4 31.0
wollastonite 30.0
silica 15.0
grolleg 10.0
dolomite 5.0
zircopax 7.0
tin o2 2.0
I would have guessed that with a name like Chun White, there would be many
drastically different variations. This one has zircopax instead of titanium,
and all 7 ingredients here add up to 100, where yours is the first five add up
to 100 and we add the other two as colorants. I think they would multiply out
to be the same though.
-scott
--- John Britt wrote:
> Is this the same Chun White you are talking about? It is a nice glaze!
>
> CHUN WHITE cone 10
>
>
> F-4 Feldspar 34.06
> Wollastonite 32.96
> Silica 16.48
> Grolleg Kaolin 10.98
> Dolomite 5.49
> Tin Oxide 2.20
> Titanium Dioxide 7.69
>
> John Britt
> www.johnbrittpottery.com
>
>
______________________________________________________________________________
> 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.
>
=====
"I should have been a plumber."
-Albert Einstein
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Ron Roy on thu 9 sep 04
I would advise against using an oribe type glaze as a liner glaze - they
usually call for 5 or 6 % copper oxide and copper is hard to hold in a
glaze.
Better to have it tested to see if it is stable enough to be next to food.
RR
>If you want to really, really set off the color of the copper red, you need a
>complimentary color to red. As far as visual light is concerned (ie, not
>pigment based), you need a cyan (the sky is cyanish). But I think a more
>subtler version than sky blue would work well. Maybe a very subtle blue
>celadon? I think the contrast of oxblood and light blue celadon would be great
>aesthetically, but that's just me. Or, perhaps a very subtle oribe?
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
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