The original curve was created while spinning a pen in one's own hand. The two end points of the pen were followed in space. Since the finger-trick can be repeated without interruption, two loops inside each other were created.

Once the final definition of the curves had been made, they were connected across the entire surface. This resulted in intriguing intersections. In order to do justice to the general dynamics of the form, intersections were formed using rounded openings in the surface. At first problems arose with the volume of the surface model. As the, quasi free-standing, upper segment increased in weight due to the constant addition of material, the object buckled at the fragile intersections. In order to prevent this, and to reflect the ease of movement, the object was provided with hollow bodies.