Tom Buck on mon 7 jun 04
Bill (William Schran):
Dr Carty didn't focus on forming methods but I assume he was
chiefly concerned with ram-press forming, which would bypass the
"slop" method of body preparation. why do an extra step (filtration of a
slip) if slip-casting is not dominant nowadays at many whiteware plants.
as his paper will say: standard clay mixers (eg, the Soldner),
fail to "unclump" certain ingredients, and it is the clumps that lead to
cracking and warping at high cones. when he used a clay muller
(high-shear) the body had much fewer clumps, and pyroplastic deformation
was dramatically reduced.
in the case of studio potters who mix their own bodies, perhaps
the slop method should be de riguer; this would minimize clumps. then
ageing would yield a more plastic body for wheel-work.
btw, Bill, your ISP is not accepting posts.
til later. peace Tom.
Tom Buck ) -- primary address.
"alias" or secondary address.
tel: 905-389-2339 (westend Lake Ontario, province of Ontario, Canada).
mailing address: 373 East 43rd Street, Hamilton ON L8T 3E1 Canada
william schran on tue 8 jun 04
Tom wrote:>btw, Bill, your ISP is not accepting posts.<
The morning after I sent my reply to the clay mixing issue, I switched ISP.
Old: wschran@erols.com
New: wschran@cox.net
Bill
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