Hi Tony,
Here's a quick example of going from model to code:
You'll see me model a part in MoI then save it to an STL. I load the STL into my CAM package (for you, cut3d) Then generate a toolpath. Towards the end you will see me "POST" code (I dont know what it's called in cut3d, maybe something like generate). The gcode is the text you see at the end, where i load it in a backplot simulator and simulate the machine cutting with the gcode.