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primus & f4 questions

updated wed 1 aug 12

 

Maxine Peace Potter on mon 30 jul 12


The Tucson Clay Co-op is wondering what other potters are=3D0Ausing as subs=
ti=3D
tutes for primus and F4 feldspar and also what=3D0Aratios.=3DA0 If you are =
usin=3D
g Minspar as a substitute for=3D0AF4, let us know the ratio.=3D0A=3D0Amany =
thanks=3D
for your kind help=3D0A=3D0AMaxine

Steve Slatin on mon 30 jul 12


I have found Minspar to be a one-for-one substitute for=3D0AKona F-4.=3DA0 =
I ha=3D
ve never had Primus, so I can't speak to=3D0Ait.=3D0A=3D0ASteve Slatin -- =
=3D0A=3D0A=3D
=3D0AN48.0886450=3D0AW123.1420482=3D0A=3D0A=3D0A___________________________=
_____=3D0A=3D
=3DA0=3DA0=3D0A=3DA0 =3D0AThe Tucson Clay Co-op is wondering what other po=
tters are=3D
=3D0Ausing as substitutes for primus and F4 feldspar and also what=3D0Arati=
os.=3D
=3DA0 If you are using Minspar as a substitute for=3D0AF4, let us know the =
rati=3D
o.=3D0A=3D0Amany thanks for your kind help=3D0A=3D0AMaxine

James Freeman on mon 30 jul 12


Maxine...

I have been using NC4 feldspar from Zemex as a 1-1 substitute for F-4 for
about 5 or 6 years now, with no problems.

All the best.

...James

James Freeman

"Talk sense to a fool, and he calls you foolish."
-Euripides

http://www.jamesfreemanstudio.com
http://www.flickr.com/photos/jamesfreemanstudio/
http://www.jamesfreemanstudio.com/resources



On Mon, Jul 30, 2012 at 1:05 PM, Maxine Peace Potter <
maxinepeacepotter@yahoo.com> wrote:

> The Tucson Clay Co-op is wondering what other potters are
> using as substitutes for primus and F4 feldspar and also what
> ratios. If you are using Minspar as a substitute for
> F4, let us know the ratio.
>
> many thanks for your kind help
>
> Maxine
>

Julie Brooks on tue 31 jul 12


Hi All,
Got some info from production staff here
To sub for Primas P in glaze formulas use=3D20
50% G-200HP
50% Minspar=3D20=3D20

To sub for Primas S
100% Minspar

By the way, spelled Primas.
Thanks,
Julie Brooks
Creative Director, Laguna Clay Company