Here you can find the link to some web pages containing images you can print, cut, fold and glue,
in order to create you replica of a Roman Dodecahedron.
Carnuntum and Tongres:
http://stretchingtheboundaries.blogspot.it/2012/12/dimensions-for-making-replica-roman.html
Vienne (France)
http://stretchingtheboundaries.blogspot.it/2012/12/let-us-suppose-somebody-wants-to-make.html
Jublain (France)
http://stretchingtheboundaries.blogspot.it/2012/12/dimensions-for-making-replica-roman_10.html
Jublian (France)
http://stretchingtheboundaries.blogspot.it/2012/12/roman-dodecahedron-replica.html