As I've answered some time ago, blueprints for CNC machines are quite different, from what You would expect. One can either write gcodes directly, or take pains for convert cad/cam projects to gcodes (which is necessary for complicated project like this). If You're experienced with cad/cam projects, let me know via PM - I already got info from some helpful ones, that are willing to participate in this side.

Unfortunately, "generic" modelers - like for 3D objects You see normally in everyday life - are of little use here, sadly.

/Estel