You just want something to rotate around something else? Sorry hardly understood you... again.
create your first func_rotating, tie it to an entity, with an origin of course, and set all the flags and attributes that you want. Now make a second origin and make sure it's axis is over the other origin's origin. Tie it with the other xen platform. The origin is the place the entity rotates around and it doesn't have to actually touch the entity.
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