mel jacobson on wed 28 sep 11
stephanie, would you tell us about using
fresh made clay for tiles? the old saw was
that old, long clay does not work as well for
tiles as new, fresh, short clay.
this may be true for hand building as well.
we need advice.
david f., add to this if you can.
like the big jt abernathy kiln that kathi has,
mine fires the same every time...it is 45 cubic
feet. about 10 hours. i try to build energy in the
early stages..don't nurse it. then i pull back and
let it do its thing.
i never pre/fire. just turn it on...let her rip.
i think i could fire anyone's pots in the kiln
with most any glaze...if it is cone 10..it will work.
but, i would down fire at 1900f. if i was doing all
shino i would down fire for three hours.
my 18 cubic foot kiln at the farm has a typical
cycle of 5 hours. why should it not...how much
are you heating? why fire that kiln for 30 hours?
i have been building a kitchen table with four woods.
black walnut, ash, red oak and maple.
pine for the skirt and legs.
all from butch at the saw mill. 13 bucks for the
6 boards...5 quarter, 8 in. wide, 8 feet long.
that would be like 200 bucks+ at the lumber yard...if you
could get it.
i used our old planer, jointer at the farm. glued it all together.
used wooden pegs, no nails or screws/bolts.
wood butchers art.
(i will put up pictures later today.)
mel
from: minnetonka, mn
website: http://www.visi.com/~melpots/
clayart link: http://www.visi.com/~melpots/clayart.html
Victoria E. Hamilton on wed 28 sep 11
Whoa! Gorgeous table Mel. Thanks for the photos.
Vicki
Seattle
-----Original Message-----
From: Clayart [mailto:Clayart@LSV.CERAMICS.ORG] On Behalf Of mel jacobson
Sent: Wednesday, September 28, 2011 3:59 PM
To: Clayart@LSV.CERAMICS.ORG
Subject: fresh clay, firing speed,steph s.,dave f.
stephanie, would you tell us about using
fresh made clay for tiles? the old saw was
that old, long clay does not work as well for
tiles as new, fresh, short clay.
this may be true for hand building as well.
we need advice.
david f., add to this if you can.
like the big jt abernathy kiln that kathi has,
mine fires the same every time...it is 45 cubic
feet. about 10 hours. i try to build energy in the
early stages..don't nurse it. then i pull back and
let it do its thing.
i never pre/fire. just turn it on...let her rip.
i think i could fire anyone's pots in the kiln
with most any glaze...if it is cone 10..it will work.
but, i would down fire at 1900f. if i was doing all
shino i would down fire for three hours.
my 18 cubic foot kiln at the farm has a typical
cycle of 5 hours. why should it not...how much
are you heating? why fire that kiln for 30 hours?
i have been building a kitchen table with four woods.
black walnut, ash, red oak and maple.
pine for the skirt and legs.
all from butch at the saw mill. 13 bucks for the
6 boards...5 quarter, 8 in. wide, 8 feet long.
that would be like 200 bucks+ at the lumber yard...if you
could get it.
i used our old planer, jointer at the farm. glued it all together.
used wooden pegs, no nails or screws/bolts.
wood butchers art.
(i will put up pictures later today.)
mel
from: minnetonka, mn
website: http://www.visi.com/~melpots/
clayart link: http://www.visi.com/~melpots/clayart.html
David Finkelnburg on fri 30 sep 11
Mel,
I don't doubt the observations which led to the "old saw" you mention.
However, I know of no reason that fresh clay should work better for tile
than aged clay. Warping, the bane of tile making, is, as you know, a result
of different amounts of shrinkage or different rates of shrinkage. Aging in
dry mixed clay bodies leads to better hydration of the clay in the recipe.
Perhaps this has some effect on shrinkage though I am not sure how or in
what clay recipes. Certainly tile bodies seem to be best with a higher
percentage of non-plastic materials in the recipe. Perhaps the "old saw"
applies to high-clay bodies (a typical stoneware can be 85% clay or higher
versus a porcelain that's usually only 50% clay). Sorry, this is one of th=
e
many, many areas of clay that raises more questions for me than answers.
Good potting!
Dave Finkelnburg
http://www.mattanddavesclays.com
-----Original Message-----
From: Clayart [mailto:Clayart@LSV.CERAMICS.ORG] On Behalf Of mel jacobson
Sent: Wednesday, September 28, 2011 3:59 PM
Subject: fresh clay, firing speed,steph s.,dave f.
stephanie, would you tell us about using
fresh made clay for tiles? the old saw was
that old, long clay does not work as well for
tiles as new, fresh, short clay.
this may be true for hand building as well.
we need advice.
david f., add to this if you can....
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