If you need a book with a curved spine on the hard cover, just add an FFD deformer as a child of the Cover Base object and deform it. Don’t forget to increase the number of X Segments of the Cover Base object.
If you need a book with a curved spine on the hard cover, just add an FFD deformer as a child of the Cover Base object and deform it. Don’t forget to increase the number of X Segments of the Cover Base object.