[CAM Note] Additive Manufacturing.

With Additive Manufacturing parts are built by melting thin layers of powder. Material is added instead of removed, as is the case in traditional machining.

Each layer is melted to the exact geometry defined by a CAD model. Additive Manufacturing allows for building parts with very complex geometries without tooling, fixtures and without producing any waste material.

Choosing Additive Manufacturing for production provides great benefits for the entire production value chain. The geometrical freedom allows you to engineer/design your part as you envision it, without manufacturing constraints. This can be translated to extreme light-weight designs. It is also a fast production route from CAD to a physical part with a very high material utilization and without the need to keep expensive castings or forgings on stock.

http://www.arcam.com/technology/additive-manufacturing/