iandol on sat 12 jul 03
Dear Carole,
Your comment about the work of Ron Roy <helps his (glazes)melt is therefore valid >> Of course it is! I have =
made the same observation. Before me is a 6*6 tile which shows without a =
shadow of doubt that as Calcia increases while Alumina and Silica =
diminish the samples change from stiff, opaque lumpy stuff to having =
well round menisci and transparency. Another tile show that as Calcia =
increases and Potassia decreases the same effect occurs, which surely is =
an anomalous result because K2O has a much lower melting point than CaO!
I have no arguments with your philosophy or your approach to the main =
business of making pottery. <the pot -2.Experiment with glaze and firing regime -3.Observe and assess =
result - 4.Go back to 1.>>Its the way most of us rub along. But I would =
add one more step to your rubric.=20
I suggest that in assessing your results you may understand them a =
little better and get more alternative pathways to follow if you check =
that the ways you, or the people who you admire, are thinking in =
consonance with the General Principles of Physics and Chemistry. So add =
5. Ask, and try to solve the puzzle of "Where does this result fit into =
the general picture of things."
Good to get your mail.
Best regards,
Ivor Lewis. Redhill, South Australia.
Had a Pal who worked for a Macclesfield engineering company. Did his =
apprenticeship in Tideswell.
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