Andrew Karp on sat 10 jul 99
Hey everybody,
I'm writing for a friend who doesn't have access to this list but would
appreciate help.
Here's her dilemma, in her own words:
Recipe for Marie Woo Blue cone 10, reduction (possibly from Hyper Glaze llX =
or
Val Cushing's book)
Potash feldspar 166.4
Silica 106.8
OM4 Ball clay 51.6
Whiting 71.2
Bentonite 4.00
FE0 16.
Rutile 16
(note: not the Woo Blue of the 1970s)
This glaze used to be shiny, dark blue, flashes of yellow and red where =
thick.
Nice depth. Have used Custer feldspar consistently. Updraft kiln, reduction.
Now the glaze is not shiny, has greyed surface, no red/yellow highlights.
Can anyone suggest modifications or point out something that might cause the
above.
Please reply to Connie mailto:DONOS1=40aol.com
or this list, and I will forward replies to her.
Thanks,
Andy Karp
claypots=40earthlink.net
Ben Shelton on tue 13 jul 99
I've used a similar glaze a lot and the most variable factor in the finish
is the firing. Poor reduction can leave this glaze (and other rutile types )
opaque and tanish..... Try that for a start, Ben
-----Original Message-----
From: Andrew Karp
To: CLAYART@LSV.UKY.EDU
Date: Saturday, July 10, 1999 10:34 AM
Subject: Blues over Woo Blue
----------------------------Original message----------------------------
Hey everybody,
I'm writing for a friend who doesn't have access to this list but would
appreciate help.
Here's her dilemma, in her own words:
Recipe for Marie Woo Blue cone 10, reduction (possibly from Hyper Glaze llX
or
Val Cushing's book)
Potash feldspar 166.4
Silica 106.8
OM4 Ball clay 51.6
Whiting 71.2
Bentonite 4.00
FE0 16.
Rutile 16
(note: not the Woo Blue of the 1970s)
This glaze used to be shiny, dark blue, flashes of yellow and red where
thick.
Nice depth. Have used Custer feldspar consistently. Updraft kiln, reduction.
Now the glaze is not shiny, has greyed surface, no red/yellow highlights.
Can anyone suggest modifications or point out something that might cause the
above.
Please reply to Connie mailto:DONOS1@aol.com
or this list, and I will forward replies to her.
Thanks,
Andy Karp
claypots@earthlink.net
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