"Rafael Molina-Rodriguez (Rafael Molina-Rodriguez)" on tue 18 mar 97
Clayarters :
The following is the best Oribe I've found. It's one of my class glazes
here at Cedar Valley.
Oribe ^ 10 Reduction (from Peg Udall)
Potash Feldspar 29.3 (Peg says K-200 I use Custer)
Flint 24.0
Whiting 21.2
Talc 7.4
EPK 11.9
Bone Ash 1.0
Copper Carbonate 6.2
A beautiful translucent green. Works best on whire stonewares or
porcelains.
Good luck!
Rafael
rmr3431@dcccd.edu
Dave and Pat Eitel on mon 24 mar 97
>----------------------------Original message----------------------------
>Clayarters :
>
>The following is the best Oribe I've found. It's one of my class glazes
>here at Cedar Valley.
>
>Oribe ^ 10 Reduction (from Peg Udall)
>
>Potash Feldspar 29.3 (Peg says K-200 I use Custer)
>Flint 24.0
>Whiting 21.2
>Talc 7.4
>EPK 11.9
>Bone Ash 1.0
>Copper Carbonate 6.2
>
>A beautiful translucent green. Works best on whire stonewares or
>porcelains.
Interestingly, this formula is almost identical to a formula I've used and
put on Clayart as one I got as "Shaner Oribe"--mine calls for 5.2 copper
carb instead of 6.2.
This is also the formula that was found to be leaching copper when someone
noticed some of their Thanksgiving leftovers lightened the color! I've
soaked it in vinegar overnight and noticed a clear
difference--lightening--of the color.
Ron Roy suggested the following revision to eliminate the copper leaching
problem, but I have not yet tested it, unfortunately. I have, however,
avoided putting it on food surfaces since I read about the problem. Ron's
revision:
Custer 34
Silica 29
Whiting 19
Talc 5
EPK 12
Bone ash 1
Bentonite 1
I'd like to hear from you if you test this and it turns out well.
Later...Dave
Dave Eitel
Cedar Creek Pottery
Cedarburg, WI
pots@cedarcreekpottery.com
http://www.cedarcreekpottery.com
"Rafael Molina-Rodriguez (Rafael Molina-Rodriguez)" on tue 25 mar 97
Dave :
Thanks for info on Oribe leaching. I'll try Roy's revision.
Regarding the similarities to your Shaner Oribe, all I can say is I found this
Oribe in The Studio Potter June 1994 Volume 22 Number 2 in the article
"A Small Woodburning Kiln" by Peg Udall. This is why I attributed it to her.
Rafael
>>> Dave and Pat Eitel 03/24/97
07:52am >>>
----------------------------Original message----------------------------
>----------------------------Original message----------------------------
>Clayarters :
>
>The following is the best Oribe I've found. It's one of my class glazes
>here at Cedar Valley.
>
>Oribe ^ 10 Reduction (from Peg Udall)
>
>Potash Feldspar 29.3 (Peg says K-200 I use Custer)
>Flint 24.0
>Whiting 21.2
>Talc 7.4
>EPK 11.9
>Bone Ash 1.0
>Copper Carbonate 6.2
>
>A beautiful translucent green. Works best on whire stonewares or
>porcelains.
Interestingly, this formula is almost identical to a formula I've used and
put on Clayart as one I got as "Shaner Oribe"--mine calls for 5.2 copper
carb instead of 6.2.
This is also the formula that was found to be leaching copper when
someone
noticed some of their Thanksgiving leftovers lightened the color! I've
soaked it in vinegar overnight and noticed a clear
difference--lightening--of the color.
Ron Roy suggested the following revision to eliminate the copper
leaching
problem, but I have not yet tested it, unfortunately. I have, however,
avoided putting it on food surfaces since I read about the problem. Ron's
revision:
Custer 34
Silica 29
Whiting 19
Talc 5
EPK 12
Bone ash 1
Bentonite 1
I'd like to hear from you if you test this and it turns out well.
Later...Dave
Dave Eitel
Cedar Creek Pottery
Cedarburg, WI
pots@cedarcreekpottery.com
http://www.cedarcreekpottery.com
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