Hi again

I've been working on an addin that reads in hundreds of STEP models and runs tens of motion studies per model to determine in which positions these oddly shaped parts would lie on a table. The tool spits out re-oriented models and DXF files.

Right now the DXF files look similar to this section. It includes radii and all other edges. I only need the outline of the part, because that's what a camera would see.

Does anybody know how I can only export the outline of this model to DXF? I've been searching but haven't found anything useful yet. Changing the display state to Shaded didn't help.