Among the faded black-and-white pictures and newspaper stories there is Ray, about age 16, standing in front of his West Livingston Street home, built by his stepfather. He stands at attention.

HOCKESSIN, Del. (WPVI) -- A 16 year old Eagle Scout from New Castle County, Delaware is using 3D printing technology to help kids who need prosthetic hands. It started out as a service project for ...