It's a 3-D printer, but not as we know it

3-D printing techniques have quickly become some of the most widely used tools to rapidly design and build new components. A team of engineers has developed a new type of 3-D printing that can print composite materials, which are used in many high performance products such as tennis rackets, golf clubs and airplanes. This technology will soon enable a much greater range of things to be 3-D printed at home and at low cost.