Hi marco, if you have Rhino that can work well for putting drafting elements on MoI generated 3D models.

Also some other software you can try is the very inexpensive ViaCAD 2D: http://www.punchcad.com/p-7-viacad-2d-v7.aspx

And there are also some various 2D drafting programs out there like:

http://www.doublecad.com/
http://www.progesoft.com/
http://www.3ds.com/products/draftsight/overview/

and a lot of others too.

- Michael