Rendering architectural line drawings

Hi all,
I have to make architectural 2D-line drawings from modelled houses and I thought that I might as well write a small tut of it. Maybe it is usefull for someone else too.

So here it is: http://www.opendimension.org/blender3d_en/line_drawings.php

ps. Actually I’m making them for scale models and I add that part later.

Why not post in the tutorial forum?

Sorry for wrong forum, posted to the tutorials.