Ron Roy on tue 21 aug 07
Thanks for catching that John - exactly right.
RR
>"The alumina in this glaze [Reitz Green] is way up there at .86 -
>the upper limits for a cone 10 glaze are commonly 5.5 so I am
>thinking this is going to be very hard to melt."
>
>I assume Ron meant .55, not 5.5
>
>Its expansion is also very high at 7.0; most stonewares are lower
>than this - mine for example is 6.6, so I would think crazing is
>probable except on high-expansion porcelains or if applied very thin.
>
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Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
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