Blender for simple profile diagrams...? My company has asked me to try to find a good program that can assist in our producing diagrams for patent applications. 

More specifically, we need to be able to open a STEP file, then manipulate (deleting/hiding lines) into a simplified view of the object in black-and-white profile, with just the edges and maybe some tangent lines, no shading, no hidden lines. (Something like the link below), and then export as a 2D  .dwg file for final touch-ups in Corel.



Should I invest my time (and money) in Blender? Can it do this kind of thing simply?
(If so, or if you have any tutorials to share for this, I would be interested to start immediately.)
You can render the outline if you enable Freestyle.



In the controls for freestyle enable Silhouette and border.

The outline can then be exported in SVG Format by enabling the  Frrestyle SVG Exporter

The exported SVG can then be edited in any vector graphics program like Inkscape, Illustrator, etc.