Concept 4

With this concept I decided to continue experimenting with the centre joint and start abstracting the look from the original model.

 

While keeping the layering effect I decided to try and see what it would look like more block than circular. I still used side connections but only sketched them rather than actually render them in one of my computer concepts. the only connection I experimented with in the computer model was the centre one (I still separated the parts that were to be joined by other means though in order to get a feeling of the look)

I must admit that this dose look rather unique but I don't really like it, it's too far from the look of the origional model and I'd rather not use a centre connection in my model if I can help it (I like the look of a open circle in the centre)