Yesterday with the kind expertise of Rdyson I was able to create a 3D intersection path and extrude a circular profile along it as per image 1.
I then created a circular pattern as per image 2.
Does anyone know how to control the start radii in helical coils / equation curves so that a blended radii is generated as per the shape of my dotted red lines rather than the lumpy radii Inventor automatically generates?