You have 100 year-old classic cars and hand-built custom cars... how do you make spare parts? Jay Leno and his Chief Engineer, Jim Hall, utilize a combination of 3D Scanning and 3D Printing to improve on his classic and customized one-of-a-kind car collection. Recently, Jay's team used a digital workflow to reverse engineer a new and improved valve cover before sending the part to 3D Systems On Demand Manufacturing for a 3D printed investment casting pattern. Jay has been fix