Barbra Kates on mon 7 sep 98
I'm looking for a clay body recipe for large slabs - at least an inch
thick - that will withstand thermal shock, with no cracking, in
extreme heating and cooling situations. Thanks
John Post on tue 8 sep 98
At 01:05 PM 9/7/98 EDT, you wrote:
>----------------------------Original message----------------------------
>I'm looking for a clay body recipe for large slabs - at least an inch
>thick - that will withstand thermal shock, with no cracking, in
>extreme heating and cooling situations. Thanks
This is my variation of one of Robert Piepenburg's Raku clay bodies.
The kyanite is the magic ingredient that allows it to withstand a lot of
thermal shock.
I use it for raku. Students of mine have made some large thick pieces with
it and they have survived the raku process.
Hawthorn Bond clay 50#
Goldart clay 50#
Ball clay 50#
Virginia Kyanite 48 mesh 30#
John Post
potter@c3net.net
Sterling Heights, MI USA
Brian Crocker on wed 9 sep 98
------------------
From 'The Craft and Art of Clay'
Cone 11, Flameware A
Petalite 30=25
Spodumene 20=25
Fire clay 30=25
Ball clay 20=25
----------------------
Cone 10, Flameware B.
EPK china clay 13=25
Ball clay 35=25
Petalite 45=25
G-200 feldspar 5=25
Bentonite 2=25
---------------------
I have never tried the above if it is OK please let me know,
Kind regards,
Brian Crocker.
4 Erica Street, Tea Tree Gully, S.A. 5091
AUSTRALIA.
=7B e.mail address =7D crocker=40picknowl.com.au
----------
=3E ----------------------------Original message----------------------------
=3E I'm looking for a clay body recipe for large slabs - at least an inch
=3E thick - that will withstand thermal shock, with no cracking, in
=3E extreme heating and cooling situations. Thanks
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