Deborah Bouchette on fri 6 aug 99
------------------
With a rubber or wood rib, scrape the slurry off one or both sides of the =
pot
wall after each throw. Even keeping one side completely clean of slurry =
keeps
the wall stiffer.
---------------------
now 15 years in Oregon
Deborah Bouchette
principal=40aleatoric-art.com
http://www.aleatoric-art.com
-----Original Message-----
From: Jeff Lawrence =5BSMTP:jml=40sundagger.com=5D
Sent: Tuesday, August 03, 1999 11:01 AM
Subject: thixotropical blues
----------------------------Original message----------------------------
Hello all,
I recently found time to do some throwing and was trying for tall (for me)
pitchers. I started with pugmill pugs that had not been wedged in advance,
which seemed stiffish at first. Several times, I got cylinders up to about
20 inches on maybe three pulls, and then on the fourth pull they shrank on
me. The cylinders lost inches in height as they settled into an
ever-thickening base. Subsequent pulls just made matters worse. The bottom
wall, though it became twice as thick, was much softer and flabbier than
originally.
My conclusion was the throwing stimulated the clay thixotropically to relax
and liquify on me.
If that is the case, what solutions other than changing clay bodies (or
learning to throw better) might maintain the clay's rigidity?
If any other accounts suggest themselves, what are they and what does one
do about them?
TIA,
Jeff
Jeff Lawrence Sun Dagger Design
jml=40sundagger.com Rt. 3 Box 220
www.sundagger.com Espanola, NM 87532
vox 505-753-5913 fax 505-753-8074
| |
|
