Rick the trick is to import the 3D model then extract the edges, dump the model and the lines not required and use these for the toolpaths. . .. . . . Simplizzz

Edit: This happens all the time. Folks ask me to make stuff and send me 3D models taking ages over making them only for me to just explode them for the 2D lines/arcs.!! . . . . .If they just asked in first place could have saved them hours. . Lol