Another method would be to create the zigzag shape as a straight section with a lot of edges and then use a FFD or some kind of bend deformer to make it go in a circle
High resolution versions here: (entry is all EVE) https://www.artstation.com/artwork/98LNlO This is a lighting version with lights / shadows and wireframes. This is the beauty (for now since i didn't get to posing a dynamic pose and such, but if i can i will upload one before the time, if i did not then i will work on this…