Blender CAM drives computer aided machining equipment like mills. You can now export your designs and have them milled in wood, for example!
Blender CAM writes:
Blender CAM is an open source solution for artistic CAM - Computer aided machining needs.
Blender CAM is an extension for the free open-source Blender 3d package.
It has already been used for some milling projects, and is actively developed. If you are a developer who would like to help, don't hesistate to contact me.
This extension is free of charge, however you can donate to support the development and appreciate the work which has already been done.