Grimmer on sun 7 jun 98
Hi,
Double the amount, half again as much, don't even try it,
direct substitution, try a 50/50 mix. What it really comes
down to, folks, is you gotta TEST, TEST, TEST on your base
glazes. Start with the glaze in question and add, say: 2, 4,
6, 8, 10, 15% and put each on a couple of tiles. Fire them is
a regular glaze fire. Check for glaze fit; it may well have
changed. See what works for you. Maybe zircon is better than
tin for you, maybe it's the same, maybe it stinks. All the
advice in the world will never replace testing.
stepping down from the soapbox.
steve grimmmer
marion illinois
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