David Hendley on fri 17 may 02
I took a stab-in-the-dark and add 10%, so for a 5" finished
post I made it 5.5" long, a 6" post was made 6.6" long, etc.
My thinking was that this mixture, with so much pre-shrunk
aggregate (the firebricks), should shrink less than the 13%
you would expect from a stoneware claybody.
As luck would have it, that first guess was spot-on.
David Hendley
Maydelle, Texas
hendley@tyler.net
http://www.farmpots.com
----- Original Message -----
From: "Brian Molanphy"
>
> how do you calculate the shrinkage, in order to stamp the green stilts
with
> their post-fired height?
>
> brian
>
Dannon Rhudy on sat 18 may 02
.......At 10:20 PM 05/17/2002 -0500, you wrote:
>I took a stab-in-the-dark and add 10%, so for a 5" finished
>As luck would have it, that first guess was spot-on.....
And, in any case, what difference does it make? As long
as each set is the SAME height, it doesn't matter if that
height is precisely 6" (or whatever). If your posts turn out
to be 5 3/4", 3 3/4", etc - they still work. Just keep notes of
your mixture and original measurements, so that you can
make the same another time.
regards
Dannon Rhudy
Earl Brunner on sat 18 may 02
And if you wanted them REALLY exact, you could allow a little extra
length and use a masonary blade or tile saw and precision cut them after
firing,
Earl Brunner
mailto:bruec@anv.net
http://coyote.accessnv.com/bruec
-----Original Message-----
From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.CERAMICS.ORG] On
Behalf Of Dannon Rhudy
Sent: Saturday, May 18, 2002 8:52 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: calculating green stilt length
.......At 10:20 PM 05/17/2002 -0500, you wrote:
>I took a stab-in-the-dark and add 10%, so for a 5" finished
>As luck would have it, that first guess was spot-on.....
And, in any case, what difference does it make? As long
as each set is the SAME height, it doesn't matter if that
height is precisely 6" (or whatever). If your posts turn out
to be 5 3/4", 3 3/4", etc - they still work. Just keep notes of
your mixture and original measurements, so that you can
make the same another time.
regards
Dannon Rhudy
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