Bread-Bakers v102.n031.3

Pat,

Commercial baking stones are very expensive, but need not be.  I and others 
have successfully used kiln shelves.  Find a pottery supply store and get a 
round shelf that fits your oven.  It is designed to fire in a kiln to 1250 
deg C or higher and will certainly withstand cleaning.  I clean mine in the 
kiln when firing some pots.  They are much cheaper than stones sold for 
oven use, and probably more durable.

Good luck,

Ian