@ Stephano

I don't know if that interest you but the free DesignSparkMechanical 5.0 has a DXF 2D export!
(and a PDF 3D export! ;)

Here from a Moi Solid (exported to DSM in Step format then Exported from DSM in 2D DXF ) :)



and here your Moi Solid in your 3D PDF favorite! :)