ccpottery@BELLSOUTH.NET on wed 27 aug 03
David H says - ( Thanks for the answer by the way )
'So, if you want to work with true porcelain, it will slump and there
is nothing you can do to stop it. Your porcelain artist friends are
correct: either plan for the slumping or make stable shapes. You
can also make props to support wide rims during firing, but of course
that means the bottoms of the rims cannot be glazed.'
OK - I have heard people say you can support a form on a bed of ? sand ? during firing
and this would avoid slumping .... this sounded weird to me as I thought the sand would
melt so I might have the wrong information. Also, I always use a kiln vent and all I could
picture was fine grains of it floating onto fluid glazes on everything else.
I suppose I could support the form during high firing leaving the bottom unglazed, then
low fire a glaze on the bottom? It's all just clear glaze and the end result should look the
same.
Thanks for any help
Chris Campbell - in North Carolina - darn, I just can't stop pushing the envelope !!
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