Another possibility is wax paper around (and the bottom) of an
"armature" type form. I used this with success when doing slab work in clay
over a can.
PS to Joan: thank you for reposting the art books website address!
Ann-on-y-mouse in Columbus
Art Teacher, K-5, retired
> The other method I have used is a slab cylinder.
If you wrap the can
> in enough newspapers that should help to dry out the
> clay enough to remove the can the next day. Another
> option that works is to use a piece of cardboard
> rolled as a separater around the can - then the clay
> slides off easily and you still have the cardboard to
> help support the clay.