Soon after, he began musing about how the dynamic effect he wished to obtain for the handle could be expressed by slicing off the two extremities. Seeing that they weren’t symmetrical, the cuts needed to have different inclinations.

— Vico Magistretti
“Try to make a sample along the lines of these sketches,” he said to me. “Let’s see if you succeed in expressing my idea.” By the third prototype, he was satisfied. Sibilla was born.