Back massager attachment

As per the photographs, the original component that attached the ball to the spring had worn away over a prolonged use. I was asked whether I could fashion a new part so it could continue to be used. After a few hours of familiarising myself with Blender and exporting the .stl file to Bambu Studio and faffing about creating a negative part cylinder because I was getting non-manifold errors on the exported file, I managed to create this which secures the ball end. Two strips of parcel tape around