Francis Toms on wed 7 jul 99
------------------
In a message dated 7/6/99 6:16:35 AM, pbwriter=40fwb.gulf.net writes:
=3E=3EThe glaze is contracting more than the clay, and if you look closely =
at
=3Ethe
=3E=3Eglaze, you will see extreme drought type cracks running everywhere, =
leading
=3E=3Eto all sorts of problems for the people who buy your ports. If it is =
really
=3E=3Ebad, the glaze could end up dropping off the pot.
=3E=3E
=3E
=3EI think what you are speaking of here is shivering, the opposite of
=3Ecrazing, and this is a very serious glaze flaw indeed...
=3ERay
Is there a misunderstanding here..?
=22Craz(ing) occur(s) because the glaze contracts more than the body as the =
pot
cools after firing.=22
Hamer, The Potters' Dictionary, P88
With respect, the problem described (glaze contracting more than the clay) =
is
indeed crazing =97 not shivering, which is the opposite.
Francis
Ray Aldridge on fri 9 jul 99
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At 08:55 AM 7/7/99 EDT, you wrote:
=3E----------------------------Original message----------------------------
=3E------------------
=3E
=3EIn a message dated 7/6/99 6:16:35 AM, pbwriter=40fwb.gulf.net writes:
=3E
=3E=3E=3EThe glaze is contracting more than the clay, and if you look =
closely at
=3E=3Ethe
=3E=3E=3Eglaze, you will see extreme drought type cracks running everywhere,=
leading
=3E=3E=3Eto all sorts of problems for the people who buy your ports. If it =
is really
=3E=3E=3Ebad, the glaze could end up dropping off the pot.
=3E=3E=3E
=3E=3E
=3E=3EI think what you are speaking of here is shivering, the opposite of
=3E=3Ecrazing, and this is a very serious glaze flaw indeed...
=3E
=3E=3ERay
=3E
=3E
=3EIs there a misunderstanding here..?
=3E=22Craz(ing) occur(s) because the glaze contracts more than the body as =
the pot
=3Ecools after firing.=22
=3EHamer, The Potters' Dictionary, P88
=3E
=3EWith respect, the problem described (glaze contracting more than the =
clay) is
=3Eindeed crazing =97 not shivering, which is the opposite.
=3E
I was evidently unclear. I was referring to the idea that crazing would
cause the glaze to =22drop off the pot.=22 I don't see how crazing could =
cause
this to happen, but it will happen with shivering, which as you say is the
opposite of crazing.
Ray
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