Dr. Judy Van Middendorp on fri 28 apr 00
Does anyone have a matt black glaze recipe for cone 10 - 11 that they
wouldn't mind sharing? I do reduction firing in a gas kiln. Thanks. Judy
Gregory D Lamont on sat 29 apr 00
At 05:51 PM 4/28/00 -0400, you wrote:
>----------------------------Original message----------------------------
>Does anyone have a matt black glaze recipe for cone 10 - 11 that they
>wouldn't mind sharing? I do reduction firing in a gas kiln. Thanks. Judy
Hi Judy,
Here's one we use at Iowa State University. Very reliable, but too low in
silica to be food-safe:
Black Velvet Matte (cone 9-10 reduction)
49 Nepheline syenite
20 EPK
10 Silica
21 Whiting
--------
100
Add:
4 Manganese dioxide
8 Black iron oxide
3 Cobalt carbonate
Greg
E-mail address:
gdlamont@isunet.net
Pottery Web Page:
http://www.ourwebpage.net/greglamont/
Mailing address and Phone:
Greg Lamont
3011 Northwood Drive
Ames, IA 50010-4750
(515) 233-3442
Wade Blocker on sat 29 apr 00
----------
> From: Dr. Judy Van Middendorp
> To: CLAYART@LSV.UKY.EDU
> Subject: Re: Matt Black Glaze
> Date: Friday, April 28, 2000 3:51 PM
>
> ----------------------------Original message----------------------------
> Does anyone have a matt black glaze recipe for cone 10 - 11 that they
> wouldn't mind sharing? I do reduction firing in a gas kiln. Thanks. Judy
Judy,
Just use your favorite matt white glaze with the addition of 7% black
stain.
I do have a number of black glaze recipes which contain Albany slip
glaze, I also have some very nice recipies for temmokus, however they are
not matt, nor completely black. My suggestion would probably be the best
way to go. Mia in ABQ
Dannon Rhudy on sun 30 apr 00
>>----------------------------Original message----------------------------
>>Does anyone have a matt black glaze recipe for cone 10 - 11 that they
>>wouldn't mind sharing? I do reduction firing in a gas kiln. Thanks. Judy
--------------------------------------
Here is Val Cushing's Satin Doll glaze. It's been revised to replace
albany slip, in the original. An opaque satin matt, the same over
dark or light clays. A slight surface frost, which lightens it from
a dead black, but darker than charcoal-greys, to my eye. This
is a good glaze, but difficult to use in my opinion.
A tendency to visually flatten surfaces. Try it, see if you like it.
Satin Doll Black, Revised (cone 9 1/2-10 reduction):
40 Red Art Clay
15 Nepheline Syenite
10 Barium Carbonate
15 Talc
10 Whiting
10 Silica
ADD: Chrome Oxide 1%; Red Iron Oxide 2%; Manganese Dioxide 2%;
Cobalt Carbonate 2%.
regards
Dannon Rhudy
potter@koyote.com
>>
>
Cindy Strnad on mon 1 may 00
Wade,
If you make a black glaze in this way, do you keep the zircopax or other
opacifier? I'm assuming that you would do so, in order to maintain the
opacity, but not sure I'm right.
Cindy Strnad
earthenv@gwtc.net
Earthen Vessels Pottery
RR 1, Box 51
Custer, SD 57730
Wade Blocker on tue 2 may 00
----------
> From: Cindy Strnad
> To: CLAYART@LSV.UKY.EDU
> Subject: Re: Matt Black Glaze
> Date: Monday, May 01, 2000 12:29 PM
>
> ----------------------------Original message----------------------------
> Wade,
>
> If you make a black glaze in this way, do you keep the zircopax or other
> opacifier? I'm assuming that you would do so, in order to maintain the
> opacity, but not sure I'm right.
>
> Cindy Strnad
> earthenv@gwtc.net
> Earthen Vessels Pottery
> RR 1, Box 51
> Custer, SD 57730
Cindy,
I assume that you are referring to my posting about using a tried and
true white matt glaze to which you add a stain to get a black glaze.. You
have raised a good question. I would assume that if you did away with the
opacifier you might end up with a transparent glaze. I would therefore keep
the opacifier and possibly add another percentage of black stain to make
the glaze a true black. I just looked at my collection of matt glazes for
cone 10 and have yet to find one with an opacifier in the recipe.
I can only reply with the old adage of -test and test again to see
what you have to do with your particular glaze to get a true black. I would
caution you to get a black stain that does not contain chrome.
It is so easy to expand your glaze collection by adding various stains to a
glaze that works for you, rather than looking for a new recipe with the
color you want. Mia in ABQ
Cindy Strnad on wed 3 may 00
Hi, Mia.
Sorry for calling you "Wade". Guess I didn't look at the signature. And
thanks for your input on the black glaze. Actually, I fire to ^6, but
figured your advice would work either way, and just as well with glossy as
matte glazes. I've tried black glaze recipes and have yet to find one that
looks safe (chemically speaking), and also really looks black. I kind of
wondered if they might not need an opacifier.
Anyway, thanks again--I'm sure your advice will help.
Cindy Strnad
earthenv@gwtc.net
Earthen Vessels Pottery
RR 1, Box 51
Custer, SD 57730
Wade Blocker on thu 4 may 00
----------
> From: Cindy Strnad
> To: CLAYART@LSV.UKY.EDU
> Subject: Re: Matt Black Glaze
> Date: Wednesday, May 03, 2000 1:50 PM
>
> ----------------------------Original message----------------------------
> Hi, Mia.
>
> Sorry for calling you "Wade". Guess I didn't look at the signature. And
> thanks for your input on the black glaze. Actually, I fire to ^6, but
> figured your advice would work either way, and just as well with glossy
as
> matte glazes. I've tried black glaze recipes and have yet to find one
that
> looks safe (chemically speaking), and also really looks black. I kind of
> wondered if they might not need an opacifier.
>
> Anyway, thanks again--I'm sure your advice will help.
>
> Cindy Strnad
> earthenv@gwtc.net
> Earthen Vessels Pottery
> RR 1, Box 51
> Custer, SD 57730
Cindy,
I have a recipe for a glossy black cone 5-6. What I do is use an engobe
containing black stain applied to dry greenware. Then I cover that with a
transparent glaze. If you would like the engobe recipe I will be more than
happy to send it. Mia in ABQ
Cindy Strnad on fri 5 may 00
Hi, Mia.
Yes, I'd love to have the recipe for your black engobe. Thanks for offering,
and I'll be eagerly awaiting it.
Cindy Strnad
earthenv@gwtc.net
Earthen Vessels Pottery
RR 1, Box 51
Custer, SD 57730
Wade Blocker on sat 6 may 00
----------
> From: Cindy Strnad
> To: CLAYART@LSV.UKY.EDU
> Subject: Re: Matt Black Glaze
> Date: Friday, May 05, 2000 1:47 PM
>
> ----------------------------Original message----------------------------
> Hi, Mia.
>
> Yes, I'd love to have the recipe for your black engobe. Thanks for
offering,
> and I'll be eagerly awaiting it.
>
> Cindy Strnad
> earthenv@gwtc.net
> Earthen Vessels Pottery
> RR 1, Box 51
> Custer, SD 57730
Dear Cindy,
Herewith the recipe which is John W.Conrad's from his book "Ceramic
Formulas:The complete compendium. This book, plus his other books
constitute my glaze bible.
E 10 white engobe, applied on dry greenware or bisque, cone 04 to 6
Flint 25
China Clay 20
KY Ball 20
Potash Felspar l5
Nepheline syenite 10
borax or soda ash 5 (dissolve borax in hot water before adding it, I
Whiting 5 use soda ash)
add 10% black stain which does not contain chrome. Apply three coats on dry
greenware to get an even coat, and bisque. Then cover with a transparent
glaze.
Mia in hot ABQ
Cindy Strnad on mon 8 may 00
Thanks, Mia.
I've been wanting a nice black, so you can be sure I'll give this engobe a
shot.
Cindy Strnad
earthenv@gwtc.net
Earthen Vessels Pottery
RR 1, Box 51
Custer, SD 57730
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