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screening local clay for throwing

updated tue 25 nov 03

 

Paul on sun 23 nov 03


What size screen do you have to run locally-dug clay through before using
for throwing? I have an 80-mesh talisman and i found it surprisingly easy to
pass the slip through it after dumping all the hard chunks into a glaze
mixer i use, letting it sit overnight and then blending again. Would there
be any advantage to running it through a more course screen? thanks,
Paul

Stephen on sun 23 nov 03


I just run the slurry through screen wire. That is usually enough. Of
coures, if there is too high a percentage of sand, then that is not enough.
Stephen

John Rodgers on sun 23 nov 03


Not if it already passes through a finer screen.

Regards,

John Rodgers
Chelsea, AL

Paul wrote:

> Would there
>be any advantage to running it through a more course screen? thanks,
>Paul
>
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masta@UMICH.EDU on mon 24 nov 03


With my local clay, a coarse screen gave a
lovely texture (for hand-building, which is what
I do) by keeping in the "natural grog".
Unfortunately, a lot of that was bits of lime that
caused lime pops after bisque firing. So if your
clay is like mine, you may want to keep screening
at 80 mesh to keep lime chunks out, and add something
else back in if you want more tooth.


Robert Masta
dqatech@daqarta.com

D A Q A R T A
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