Richard J.Mahaffey on mon 20 may 96
Please excuse this if it is redundant, as I have been away from my e-mail for
awhile.
The definition I learned for "china" was ware that was buisque fired high,
supported in sand inside saggars (cone 10ish, I think) and glazed with a
thickened glaze at about cone 3. Commonly a lead glaze. No warping in the
glaze fire, a much easier time fitting the glaze to the body, and the ability
to make cantalevered forms ( plates with wide flat rims)that do not sag
because the claybody does not get anywhere near it's slumping temperature.
Well that's what I remember.
So some sort of glaze thickner may help.
The glaze that formerly crazed may craze less or not at all. (F Carlton Ball
used to say that "if the body is underfired the glaze will always craze".)
Rick Mahaffey
Naruto Japan
6 weeks to go till I return to USA
I am not sure if that is good oor not.
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