attached is the programmed part file. As you said, I only programmed one slot, because I guess you do the instances and rotation on the machine and calling the program again.
I would wish you had NX12.0.2, because than you could utilize our new Area Mill Spiral, which is the choice to go for such a symmetric geometry (see picture below).
I attached both, an NX11 and NX12 version.
Let me know if this fits for you.
Yes of course. The program I made is just 3-Axis Toolpaths.
I think you can just do the rotation on your machine and call the programm again.