After news spread that the Italian innovation firm Isinnova successfully saved lives by 3D printing ventilator valves for its local hospital, CEO Cristian Fracassi and engineer Alessandro Romaioli fielded all sorts of calls from around the world. Many 3D-printing companies wanted to join in and help. Several countries wanted to use similar technology for their populations. But, one call started a whole new project for Isinnova’s staff in Brescia, in northern Italy. Renato Favero, a retired physician, got in touch with Fracassi and Romaioli by contacting a doctor at the Chiari hospital where the ventilator valves were used.