I have prepared this page for drying tile.
http://www.goshen.edu/~marvinpb/dryingslabs.html
I successfully make lots of tile by drying it between pieces of unpainted drywall. The edges of the tile need protection. The web site gives several ways to do this.
Marvin Bartel
Dr. Marvin Bartel, Ed.D., Professor of Art Emeritus
Goshen College, 1700 South Main, Goshen IN 46526
studio phone: 574-533-0171
http://www.bartelart.com http://www.goshen.edu/art/ed/art-ed-links.html
"You can't never know how to do it before you never did it before." ... a kindergarten boy working with clay for the first time.