You can view the meshed objects in plan, or elevation view and then use the Autocad command "Flatshot" and it will create 2D a block of what is visible on your screen. Then you can explode the block and delete out any little bits that you don't want. It's still a bit of work, but it's way faster than exploding an entire 3D object and sorting through the garbage that happens when you do that.
JP. Bernier
Draw! Studio

@carrye said:

The .dwg I have received are not good at all. They are wire mesh and not only do they have to be gutted but smoothed out. I can only smooth them so far or I end up losing too much detail so I go in and hide lines manually after a certain point. Can 20/20 models be exported as smoothly-curved AutoCAD solids instead of meshes? Is it better to export to .dxf than to .dwg?