Students use 3D printers to make prosthetic hands for children who need them. DURHAM, North Carolina (WTVD) -- The Helping Hands Project has spread to universities and colleges across the Triangle.

App-based 3D-printing services are being used to streamline the design process so anyone can transform ideas into real-world designs. A prime example: The all-new 3DPCase, an app from French 3D ...