Michael A. Terrell wrote:
Now, arranging to "borrow' a pizza place's oven, *that's* a whole
nuther level of complexity. grin

Similarly, it'd take a *really* big ceramics kiln to fit that tire
in.

nah, that's a pretty average one. mine will take a 21" round with about 1/2"
to spare on the sides.

you might call around to some ceramic or glass artists, a ceramic supply
store, or one of those paint on ceramics mall places, to 'borrow' some heat
for a while. the charge for a firing would be only a few dollars.

regards,
charlie
http://www.glassartists.org/ChaniArts