I stumbled upon some beautiful cakes and would like to re-create one. Specifically the 4th down on the left that looks like a hexagon made from several "panels". Does anyone know how I would be able to do this or how long it would take?
I will have to disagree with Bakers Crush. The cake is a round cake covered in marbled fondant. The decorations are advanced Royal Icing techniques called run-outs and collars. These take a great deal of practice and learning to get the royal icing just right.
I'm sure there are many books out there but the one I have by Eddie Spence shows all these techniques. I know there are CC members that do this type of work with great skill and I hope one of them will chime in to give you further guidance.
I have an old fashioned book that is full of RI cakes and I too would have to say that they are decorated using various RI techniques. They are very impressive!
I was referring to the "panels are fondant dried". This sounded like you were referring to a paneling technique which this cake does not use. As far as the other, I thought it would be good to use the terms Marbled fondant, RI Run-outs and Collars in case myobsession wanted to look up how to do the techniques. It would be easier for her to know the terms for the techniques and I didn't see those terms used in your original post.
The Eddie Spence book: The Art of Royal Icing
I suggest finding a used one in good condition as the new ones have sky-rocked in price unless you can find a better source.
I am sure there are other good books and tutorials out there but I am no expert in RI which is why I am still hoping someone who has done this type of work will chime in. I'm sorry I'm not more help.
I also found this video on a making a collar. Not the same design as the pretty cakes you posted but a good starting point