Hi all, I am trying to generate a 3 axis toolpath that is circular or helical to mill the below highlighted surface.

I have tried using Sweeping and although it does generate a toolpath, I can only choose between zig-zag or one way toolpaths, no Helical options.

I tried using Spiral Milling, but the toolpath generated ignores the curvature surface.

Is there a more suitable method to generate a circular/spiral toolpath for this type of surface?

Many thanks in advance.