leonid kotlyar , Nov 22, 2002; 11:07 a.m.
I have had good experience using liquid emulsion to print on large objects. You cover the object with the emulsion paste under a red light, and than stick it under an enlarger. Developing, of course, takes a bit of creativity to cover the dimensions you need. Maybe you can contact the people at Photographers' Formulary to find out if it can stand the heat. http://www.photoformulary.com/