Lori Leary on wed 26 jun 96
Hi All.
I've been following the tile thread with much interest. I'd like to
make some tiles for a fireplace and I've got a few questions:
1. Does anyone know how those commercial tile firing racks do
in a raku firing? I'm concerned that they may not hold up to the
thermal shock if I place them (along with the tiles) in the reduction
chamber.
2. Has anyone used those pre-bisqued tiles available at
pottery supply shops for raku? How do they hold up? I plan to
handbuild, but it might be fun to fool around with them.
BTW, I'd like to recommend Frank Giorgini's "Handmade Tiles". It's a
great resource. (Usual disclaimer)
Thanks for your help.
Lori in Charleston, S.C.
where 95 real degrees and 60% humidity = 107 sticky degrees
(can't believe I'm even THINKING about fireplaces!)
Eric Lindgren on thu 27 jun 96
> 1. Does anyone know how those commercial tile firing racks do
>in a raku firing? I'm concerned that they may not hold up to the
>thermal shock if I place them (along with the tiles) in the reduction
>chamber.
>
> 2. Has anyone used those pre-bisqued tiles available at
>pottery supply shops for raku? How do they hold up? I plan to
>handbuild, but it might be fun to fool around with them.
>
Lori,
1. I've fired individual 6" codierite setters with no problem in raku. I
wouldn't use a multiple tile span setter - they're too big and a tile
failure would wreck the next tile down.
2. Yes. Poorly: significant failure rate from dunting: if not on the way
up, then on the way down...
Good Luck,
Eric Lindgren
lindgren@muskoka.com
____________________
Dave Spangenberg on wed 10 jul 96
on 27 June Lori wrote --
>1. ....how those commercial tile firing racks do in a raku firing. ....
>2. ....used those pre-bisqued tiles ..... for raku
I have a student that has been raku firing commercial bisque tiles in raku on a
commercial spanning type tile rack holding maybe 20 tiles in the rack. The tile
rack has the supporting sides joined at top and bottom and therefore can be
picked up as a single unit. We bent some re-bar to use as rack lifters to move
the rack from the kiln to a reduction can. The results have been quite good and
fairly consistent between tiles by keeping them all together on the rack in post
fire reduction.
The first rack broke at the joints after about 10 firings from thermal stress, a
second rack is still going after 15 firings. The tiles take the raku treatment
quite well.
Dave Spangenberg 75463.1027@compuserve.com
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