BlenderCAM

Blender CAM is an FREE open source solution for artistic, personal, commercial or industrial CAM - Computer aided machining - a g-code generation tool.

Blender CAM is an add-on for the free open-source Blender 3d package.

It has been used for many milling projects, and is actively developed. If you are a developer who would like to help, don't hesitate to fork the project and start generating pull requests.

Download blenderCAM add-on on www.blendercam.com