mel jacobson on tue 6 aug 96
this is a very nice cone ten, easy to make temmoku style glaze.
felspar 1700
whiting 300
china clay 200
silica 400
iron 200
this glaze was found written on the side of plastic pail i bought at an
auction 31 years ago. as with all mirror blacks the thickness of the
glaze, the quality of the reduction, and the care in cooling the kiln will
play a dramatic influence on the final product. breaking to rust is the
result of thin areas. and if you wish to use this as iron red just apply a
thin coat.
as most veteran potters will verify.....make 2,000 pots, apply mirror black
glaze, and fire the kiln 73 times...you will learn to use it... mel
jacobson, minnesota
Martin Shapiro on sat 2 aug 97
I'm looking for a good mirror black glaze formula. I would like it to be a
cone 10 nontoxic glossy black glaze. I remember such a glaze from my
University days, but now can only find gun-metal black recipes. I use
propane and tend to fire in high reduction -- I love the copper reds. I
would sure appreciate any suggestions.
With much thanks,
Martin Shapiro,
WJJJ Art Studio, Waimanalo, Hawaii.
Michelle H. Lowe on sun 3 aug 97
> ----------------------------Original message----------------------------
>
>
> I'm looking for a good mirror black glaze formula. I would like it to be a
> cone 10 nontoxic glossy black glaze. I remember such a glaze from my
> University days, but now can only find gun-metal black recipes. I use
> propane and tend to fire in high reduction -- I love the copper reds. I
> would sure appreciate any suggestions.
>
Here is a Mirror Black recipe but with barium, manganese
and chrome I don't think you'd call it non-toxic...Strontium
might sub for Barium okay (.75/1) but not sure what
about the chrome and manganese...
sorry I'm not much help I guess...
Mirror Black
640 Barnard
3360 Custer
1040 Whiting
160 Barium
1574 Flint
160 mang diox
240 cobalt ox
80 chrome ox
320 RIO
240 bentonite
Mishy
Michelle Lowe, potter in the Phoenix desert \|/ |
mishlowe@indirect.com -O- | |
mishlowe@aztec.asu.edu /|\ | | |
|_|_|
http://www.amug.org/~mishlowe ____ |
-\ /-----|-----
( )
<__>
Leona Stonebridge Arthen on tue 5 aug 97
At 9:53 AM 8/2/97, Martin Shapiro wrote:
>----------------------------Original message----------------------------
>
>
>I'm looking for a good mirror black glaze formula. I would like it to be a
>cone 10 nontoxic glossy black glaze. I remember such a glaze from my
>University days, but now can only find gun-metal black recipes. I use
>propane and tend to fire in high reduction -- I love the copper reds. I
>would sure appreciate any suggestions.
I make a shiny black from Albany slip substitute (Sheffield's) and 5%
cobalt oxide. Very dependable glaze.
Leona
---
Leona Stonebridge Arthen
leona@javanet.com
Worthington, Massachusetts/USA
| |
|
