David Berg on wed 10 jan 07
I have switched to the wire wedging method and you
can actually see the layers piling up in the first few
cyclings until they get too close together. The proof
of over 1 billion layers with 30 cut and slams is this:
2 to the 30th power = 1,073,741,824
David Berg
dberg2@comcast.net
http://bergstoneware.com/
David
On Jan 10, 2007, at 1:57 AM, Ivor and Olive Lewis wrote:
> Dear Michael Wendt,
>
> You say <> billion layers >>
>
> Prove it, given that the average size of a particle of clay is one
> micron across and one tenth of a micron thick, that other minerals
> are 25 micron or larger blocks and that grog may be 500 micron blocks.
>
> Rather than a perfect lamella structure that, way of treating clay
> gives a completely randomised structure which is highly resistant
> to crack propagation. Laminated structures split easily, think
> about Shale and Slate which start out ass compressed clay.
>
> Best regards,
>
> Ivor Lewis.
> Redhill,
> South Australia.
>
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Taylor Hendrix on fri 12 jan 07
Dearest Captain Obfuscator (a.k.a. Ivor the Smartypants),
You know good and well that wire wedging layers is just an analogy for
good ol' fashioned mixing. Assuming a traditional technique, one is at
the most handling two pieces of clay. The end result is hopefully a
nearly homogenized quantity of clay free from any meaningful layers.
Please define your notion of "wire-wedged layers." How does a potter,
for example, examine the boundry between two layers? Certainly we are
not talking about the discoloration seen at the edges of wire-wedged
clay as layers, are we? That would be a most unfortunate assumption.
As an aside, I do not feel that wire-wedging contributes much in the
way of clay crystal breaking. Just a gut feeling here.
teeheehee
Taylor, in Rockport TX
On 1/11/07, Ivor and Olive Lewis wrote:
> Dear David Berg ,
>
...
Now, are you telling me that repeated further wire wedging ten times
will split each crystal along a cleavage plane until those crystals
are one thousandth of a tenth of a micron in thickness ? Astounding !
So What happens to the other minerals and grog in a clay body? Are
these also reduced to infinitesimal dimensions ? Incredible Fractal
Clay !
...
Ivor and Olive Lewis on fri 12 jan 07
Dear David Berg ,
Amazing. My calculator also churned out 1073741824. But that factor is =
dimensionless.
Take a block of clay treated to the procedure you describe and consider =
it in this way. If that block of wire wedged clay is 100 millimetres =
deep (I only use this value by way of illustration) it can be shared =
into 100,000 units, so that each unit measure is one micron, which is =
about the average breadth of a clay crystal. So every clay crystals may =
be (for illustration purposes only) one tenth of a micron thick. When =
such crystals, each being one tenth of micron thick, are stacked to give =
a pile 100 millimetres deep will contain one million crystals. In your =
terms, One Million Layers.
Now, are you telling me that repeated further wire wedging ten times =
will split each crystal along a cleavage plane until those crystals are =
one thousandth of a tenth of a micron in thickness ? Astounding ! So =
What happens to the other minerals and grog in a clay body? Are these =
also reduced to infinitesimal dimensions ? Incredible Fractal Clay !
Ivor Lewis.
Redhill,
South Australia.
dwichman@frontiernet.net on sat 13 jan 07
This is an interesting thought... but it sounded to me more like
instead of splitting crystals it will provide a great degree of
homogenization to the clay. I don't know how you would word the
degree....
Debi Wichman
Cookeville, Tn.
http://www.elementterra.com
"Now, are you telling me that repeated further wire wedging ten times =
will split each crystal along a cleavage plane until those crystals are =
one thousandth of a tenth of a micron in thickness ? Astounding ! So =
What happens to the other minerals and grog in a clay body? Are these =
also reduced to infinitesimal dimensions ? Incredible Fractal Clay !"
David Berg on sat 13 jan 07
OK, then how's about we revise the statement to:
... over 1 billion layers with 30 cut and slams IN THEORY.
The dimensions of the factor is therefore: "layers IN THEORY"
dtb
David Berg
dberg2@comcast.net
http://bergstoneware.com/
On Jan 11, 2007, at 11:59 PM, Ivor and Olive Lewis wrote:
> Dear David Berg ,
>
> Amazing. My calculator also churned out 1073741824. But that factor
> is dimensionless.
>
> Take a block of clay treated to the procedure you describe and
> consider it in this way. If that block of wire wedged clay is 100
> millimetres deep (I only use this value by way of illustration) it
> can be shared into 100,000 units, so that each unit measure is one
> micron, which is about the average breadth of a clay crystal. So
> every clay crystals may be (for illustration purposes only) one
> tenth of a micron thick. When such crystals, each being one tenth
> of micron thick, are stacked to give a pile 100 millimetres deep
> will contain one million crystals. In your terms, One Million Layers.
>
> Now, are you telling me that repeated further wire wedging ten
> times will split each crystal along a cleavage plane until those
> crystals are one thousandth of a tenth of a micron in thickness ?
> Astounding ! So What happens to the other minerals and grog in a
> clay body? Are these also reduced to infinitesimal dimensions ?
> Incredible Fractal Clay !
>
> Ivor Lewis.
> Redhill,
> South Australia.
>
> ______________________________________________________________________
> ________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
> melpots@pclink.com.
Ivor and Olive Lewis on wed 17 jan 07
Dear Michael,
Yes, the purpose is to get uniform distribution of the contents of the =
clay. Yes, I wedge. and follow through with kneading which guarantees a =
maximum degree of homogenisation. And yes, the objective is maximisation =
of productivity and profitability.
As an aside, do you know the composition of the exhaust from you new =
high vacuum pug mill ?
Best regards.
Ivor
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