Dave Finkelnburg on sat 22 jul 06
Jeez I hate it when I do this...calculate and produce
the wrong result! :-( Ron's information below is
correct, there is much less alumina and silica in
this glaze than I showed in my post earlier today. I
used the wrong analysis for soda ash. My thanks to
Ron for pointing out the error. Good work, Ron!
Dave Finkelnburg
--- Ron Roy <> wrote:
> Untitled Recipe 2
> -----------------
> SODA ASH............ 62.00
> WHITING............. 21.00
> G 200 SPAR.......... 111.00
> SILICA.............. 24.00
> ----------
> 218.00
> FORMULA & ANALYSIS
> ------------------
> *CaO........ .22
> *MgO........ .00
> *K2O........ .13
> *Na2O....... .65
> Fe2O3...... .00
> AL2O3...... .20
> SiO2....... 1.66
>
> RATIO 8.16
> EXPAN 1308.78
> WEIGHT 184.97
>
> Copper not included - not stable - and going to
> craze badly.
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