3D Printing

3D printing or Additive Manufacturing is a process of making a three-dimensional solid object of virtually any shape from a digital model. 3D printing is achieved using an additive process, where successive layers of material are laid down in different shapes. 3D printing is considered distinct from traditional machining techniques, which mostly rely on the removal of material by methods such as cutting, milling or drilling (subtractive processes).

For more information see http://en.wikipedia.org/wiki/3D_printing