Check out this interesting article comparing the benefits of hand made prototypes vs 3D printing.
“Prototypes serve two essential functions: They turn design ideas into something tangible that clients can touch and hold and they help clients and designers work as a team to refine those ideas cooperatively. To make the best client impression and get the most from client feedback, competent designers use the best tools available to give physical form to their ideas. And the best tools often happen to be our hands.”
Read the full article here.