Florence Cazenave on fri 26 jul 96
I found great red/orange pots that were glazed with a very old Chinese glaze
called "sang de boeuf", French for "buffalo or cow blood".
Does anyone have its recipe as well as some hints on how to use it -- as I
think the result is not always guaranteed! I use high firing - cone 10.
Thank you to send the responses to my e-mail address: fcazenav@ix.netcom.com
Thanks a lot!
Flo
Susan Maguire on mon 29 jul 96
"sang de boeuf", French for "buffalo or cow blood".
Does anyone have its recipe as well as some hints on how to use it -- as I
think the result is not always guaranteed! I use high firing - cone 10.
Hi Florence..
The good 'ol Chinese Stoneware Glazes book by Grebanier has allot
about copper reds and peach blooms. The one formula that is for cone 10
(most should be fired to no more that cone 9) is below. It is a deep, semi-
mat red; (when fired to cone 9, it produces a peach bloom, somewhat more
mat.) Where thick it develops a slight bluish opalescence. Best results
are achieved with a white slip under the glaze.
Also note the Godfrey or Maine feldspar: I have looked everywhere
and know now that it is no longer available. The best substitute, as I
know it, is neph syenite.
.2503 Na2O .4593 Al2O3 3.4404 SiO2
.1406 K2O .2812 B2O3
.6090 CaO
Godfrey (or Maine) feldspar 301.7
Colemanite 41.2
Whiting 45.0
Copper oxide (0.3% of batch) 1.16
Tin oxide (1.0% of batch) 3.87
Also note it's a very runny glaze! If you decide on some Cone 9 fireings,
let me
know, or try to get your hands on a copy of Grebanier. Good luck..
In way too sunny south Florida where we need rain ....
Susan Maguire
smaguire@bcfreenet.seflin.lib.fl.us
| |
|
