We're doing a production of young Frankenstein and I'm stumped when it comes to the spinning bookcase. The scene in the musical greatly resembles This scene from the movie. As you see it is imperative that the door be able to spin 360 Degrees from a center pivot point. Another point that makes this harder for me is that the bookcase will only be on stage for one scene which means that the whole unit needs to be on wheels, so there it has to be able to spin independent of the movement of the unit and can't be fixed to the ground. Last wrinkle is that the floor underneath the actor should move at the same time so that they travel along with the door. Any tips? I'd rather keep it less complicated, but obviously it won't be too easy. Thanks!