How to remove thick outline in 3d model print?

Hi everyone,

I'm trying to pring my 3d model in Autocad 2012 using layout but it creates a thick outline which I don't need. Is there a way to make this outline the same weight as all the rest lines? (The line weight is normal in drawing). Also some broken lines appeares when I plot this drawing which I would like to repair... If it's important: I impoted this model from Revit.

that's the drawing: http://wikisend.com/download/447926/3dakso.dwg

Any chance you can post an image?

There it is... I couldn't post dwg, because I need to wait for moderator's verifying... ;/

oh... didn't work. one more:

Have you checked your layer settings? Is the "outline" on its own layer?

A polyline with a global width perhaps?

all lines are the same width. when I select all lines, I can see it in properties. All lines' lineweights are set "by layer" and all lineweights of all layers are 0.20. I think this problem is not in the line,, because the same line gos not only around the model but also into it. however it becomes thick only when it goes around.

The initial post is now approved. And I deleted some unnecessary posts

Thanks.. I'm new to this forum, so sorry for that mess

P.S. There's my drawing in first post now, any more suggestions?

I solved this problem! the problem was in visual styles, thanks for you help anyway ;]