Mike Gordon on wed 2 may 12
Jeff Lawrence........I found this in my files, Mike Gordon
Begin forwarded message:
> From: John Britt
> Date: February 20, 2011 6:06:22 AM PST
> To: Clayart@LSV.CERAMICS.ORG
> Subject: Re: ^6 oil spot with ^10 3D Black base glaze
> Reply-To: John Britt
>
> Soak at peak temp for a while to heal the craters or refire or slow=3D20
> the firing
> from 6 - 7. Try these:
>
>
> ****Cone 6 Oil Spots
> Candace Black cone 6
> 65g. =3D96 NC-4 feldspar (soda feldspar)
> 20 g. =3D96 Silica
> 5g.- Whiting
> 5g. =3D96 EPK
> 5g. =3D96 Dolomite
> 5g. =3D96 Frit 3110
>
> 8.0 % Red Iron Oxide
> 2.0% Cobalt Carbonate
> =3D09
>
> Oil Spot Combo #1 Cone 6
> 47.83 g.- G-200
> 23.91g. - Silica
> 17.39 g. =3D96 Whiting
> 10.87 g. =3D96 EPK
> 9.78 g =3D96 Red Iron Oxide
>
> Oil Spot Combo #2 Cover Glaze (apply over #1) Cone 6
> 30g. =3D96Custer Feldspar
> 30g. =3D96 Gerstley Borate
> 25g.- Silica
> 5g. =3D96 EPK
> 10g. Zircopax. (Mason stains can be substituted for yellow, blue, =3D
etc.)
>
> www.johnbrittpottery.com
>
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