Fredrick Paget on sat 14 sep 02
After reading this I had a thought -- what would happen if the grog were
treated with a water repellent like the new "Water Warden"?
Since I don't have any, I can't try it. Maybe someone will.
Fred Paget
.............>. Just what are you expecting it to do by adding grog.
Stiffen >the clay? Adsorb excess water from a sticky mixture? Have clay
that >dries quickly?
>Add texture? Give it teeth so that you can feel it as it is thrown?
>Reduce shrinkage? Enhance vitrification? Reduce Pyroplasticity?
>
>Of one thing I am certain. Regardless of the opinions of other authors
>or commentators, increasing the volume of non plastic additives by >a
>significant proportion will decrease the plastic strength of >mouldable
>clay. It will also increase the rate at which clay adsorbs >water as it is
>thrown.
>Ivor Lewis.
From Fred Paget, Marin County, California, USA
iandol on sun 15 sep 02
Dear Fredrick Paget <>
You ask ..."what would happen if the grog were treated with a water =
repellent like the new "Water Warden"?"...
Tell me what the constituents of that material are and I will hazard a =
guess.
Best regards,
Ivor Lewis
Lily Krakowski on sun 15 sep 02
Why do you want to waterproof grog? If you want a waterproof additive to
open the clay for better drying what is wrong with sand?
Fredrick Paget writes:
> After reading this I had a thought -- what would happen if the grog were
> treated with a water repellent like the new "Water Warden"?
>
> Since I don't have any, I can't try it. Maybe someone will.
>
> Fred Paget
>
>
> .............>. Just what are you expecting it to do by adding grog.
> Stiffen >the clay? Adsorb excess water from a sticky mixture? Have clay
> that >dries quickly?
> >Add texture? Give it teeth so that you can feel it as it is thrown?
>>Reduce shrinkage? Enhance vitrification? Reduce Pyroplasticity?
>>
>>Of one thing I am certain. Regardless of the opinions of other authors
>>or commentators, increasing the volume of non plastic additives by >a
>>significant proportion will decrease the plastic strength of >mouldable
>>clay. It will also increase the rate at which clay adsorbs >water as it is
>>thrown.
>>Ivor Lewis.
>
> From Fred Paget, Marin County, California, USA
>
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Lili Krakowski
P.O. Box #1
Constableville, N.Y.
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