Doc, I use Cut 3D.

First of all, create your 3D model in MOI. Save it as the standard NURBS 3DM file type. Then "save as" a .STL file. You'll be given the opportunity to adjust how accurately the STL file mirrors the MOI model by playing around with the polygon count and the "divide larger than" input. I generally cut small projects and use .125 as my divide number. Now just open CUT 3D and click on "Load 3D file". Find the .stl file you just saved and you should be good to go. The tutorials on Vectric's website will help you figure out what machining options are best for your project.

Good luck.

Bob