This is a polar zonohedron, with 12 zones (6 clockwise, 6 counterclockwise), each 1/8th of the total circle of 48 zones. The top and bottom rings are there to eliminate the very thin top and bottom parts of the zones. The thinckness of the 'wires has been increased to 1.5 mm to print in the steel materials. I've made a gazebo like this in stainless steel, but with 8 zones in each direction (and only the top half), which is reminiscent of Elrond's gazebo in the Lord of the Rings movies.