lili krakowski on thu 22 jan 04
IMO a potter starting out in a new studio, or having changed suppliers =
should try every body that meets work and firing needs. Bodies vary a =
lot. One cannot predict or deduce from what others have said. I also =
think it essential to keep a variety of clay samples around so that =
when one is testing received glazes with poor results one can discover =
whether it is the body or not that is causing the problem. On a regular =
work basis, depending on what one does, two or three bodies are fine, =
though one will do. (I buy ungrogged bodies, add grog at need.
In an article I wrote for PMI called Twice-Fired Glazes there was a =
whole gaggle of iron rich glazes that fired to c.6 and turned red or =
redder at c.04. What made me happy about these glazes was that they =
were beautiful at c.6 and just as beautiful at 04.
Noah
Red Art 60
Neph. Sy 20
Dolomite 10
Frit 3185 20
Fe203 5
Cassie
Red Art 60
Bone Ash 6
NephSY 10
Frit 3185 10
Frit 3134 10
Talc 10
Fe203 7
Hannah
This is not red, but the loveliest caramel, apple butter color
Red Art 78
Washed wood ash 15
Talc 13
For those who cannot get Red Art any red earthenware clay should work.
PYROPHYLLITE is Al203 4 SiO2 H2O
Clay is Al203 2 Sio2 2H2O
Which means that p. is used to reduce crazing, both in glazes and slips. =
There also are p. bodies about which I know zip, except I think they =
are used in ovenware. =20
Two p. slips (probably from CM)
Borax 5
Spar 20
Frit 3134 5
Ball Clay 15
Kaolin 5
Flint 15
Pyrophyllite 25
Zirconium opacifier 5
P slip #2
Ferro Frit 3110 12
Bentonite 18
Flint 12
Pyrophyllite 58
As I seem to recall p. is unplastic. It is however a very useful =
material, and I think it is used too little, and I think that is =
because it is hard to spell.
Talc 10
Lili Krakowski
Be of good courage
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