David Brown on wed 7 aug 96
Hi, I'm David. Does anyone know about firing slabs on edge? I am told it is
a widely used technique in Europe. If that technique is feasible the kiln I
plan to purchase could be smaller, lighter and less expensive.
I'm nearly finished building my pottery studio (8 yrs in the waiting, 2 yrs
in the making), need equipment: Wheel (powerful), extruder, wide slab
roller, blunger shafts (for 55 gal.), doll kiln (test kiln) glaze sprayer,
front loading electric kiln and customers! Look forward to hearing from you
..
Thanks
David
Paula Coleman on wed 7 aug 96
>Hi, I'm David. Does anyone know about firing slabs on edge?
David,
I used to work at a tile factory where we fired unglazed tiles on edge. We
used two different methods for doing this. For tiles 6" and under, we would
balance 6-8 tiles together in the middle of the shelf like this: ///\\Then we'd just keep leaning more tiles against the center stack until the
shelf was full. For larger tiles, we'd stack them like books on a
bookshelf, using a hard brick at either end as bookends. The larger tiles
had more of a tendency to crack, especially if they were packed in too
tight. Make sure you leave a tiny space between each tile as you place them
to account for expansion/contraction. Good luck.
--------------------------------------------------------------------
Paula L. Coleman Email: potter@comcat.com
Ceramic Artist Web: http://www.comcat.com/~potter/
Bucks County, PA, USA
Joanna deFelice on thu 8 aug 96
>----------------------------Original message----------------------------
>>Hi, I'm David. Does anyone know about firing slabs on edge?
>
>
>David,
>
>I used to work at a tile factory where we fired unglazed tiles on edge. We
>used two different methods for doing this. For tiles 6" and under, we would
>balance 6-8 tiles together in the middle of the shelf like this: ///\\>Then we'd just keep leaning more tiles against the center stack until the
>shelf was full. For larger tiles, we'd stack them like books on a
>bookshelf, using a hard brick at either end as bookends. The larger tiles
>had more of a tendency to crack, especially if they were packed in too
>tight. Make sure you leave a tiny space between each tile as you place them
>to account for expansion/contraction. Good luck.
>
>--------------------------------------------------------------------
>Paula L. Coleman Email: potter@comcat.com
>Ceramic Artist Web: http://www.comcat.com/~potter/
>Bucks County, PA, USA
Hi David, I'm Joanna and I fire slabs up to 23" diameter; i either put my
clay thru a slab roller or by roll it or 'sling' it by hand, so they tend
to have minds of their own. However, I have fired some to 10 and have had
rare and minimal cracking and warping. I tend to lie them flat, stacking
for bisque and then alone or alongside another when space allows, on
shelves of narrow height in an electric kiln. Great fun.
Let us know how it goes!
joanna deFelice in eugene, oregon, usa
prepress@cyberhighway.net
June Perry on fri 9 aug 96
Dear David:
I bisque fire large platters on their edge and they are fine. I don't know
about high temperature glaze firing. I imagine it would be fine if you have
unglazed edges.
Regards,
June Perry
EMail:juneperry2wave.net
Suvira McDonald on mon 19 aug 96
>----------------------------Original message----------------------------
>
>Hi, I'm David. Does anyone know about firing slabs on edge? I am told it is
>a widely used technique in Europe. If that technique is feasible the kiln I
>plan to purchase could be smaller, lighter and less expensive.
>
>I'm nearly finished building my pottery studio (8 yrs in the waiting, 2 yrs
>in the making), need equipment: Wheel (powerful), extruder, wide slab
>roller, blunger shafts (for 55 gal.), doll kiln (test kiln) glaze sprayer,
>front loading electric kiln and customers! Look forward to hearing from you
>.
>
>Thanks
>Davidi
David,
I recently test fired some panels approx 30"x14"x1.5". They were in the
firebox of the anagama for five days on their edges, against the side wall,
wadded apart. On the occasion cone 12 was thoroughly melted.Two of the
three showed no sign of warpage, however one cracked into two pieces. It
was the first test of the clay body I'm working on from locally-dug clays
which also included 30% sawdust and 15% grog. Hope thar helps.
Suvira McDonald
Ceramics Department
Southern Cross University
Lismore, N.S.W. Australia
Email: smcdon12@scu.edu.au
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