I have tried STLOUT and the convert to solid features but nothing happens. It says select solids or water tight meshes. I highlight the whole surface and says " 1 found (1 duplicate)" and then nothing happens!
I am starting to think my surface is not quite a surface or something? Though I did create it Using the surface tool.
Civil3D is not very intuitive (must be a plus for C3D trainers).
You would need to turn on triangles in your surface style (settings tab
of toolspace), then use 'Extract Objects from Surface' on the Surfaces,
Utilities flyout of the menu (don't even ask about the ribbon, I don't
use it) or the AeccSurfaceExtractObjects command.
Never start any job without the right tools!
AutoCAD Add-on Tools at http://www.dotsoft.com
Thanks so much for all the help but there has been nothing that I can do to put a surface on it
It appears to have triangles already on the surface. I just need to put a solid face on it I guess in order to then export it to Rhino (as at the moment it does not export - its unrecognized dwg file).
If any of you have time I have attached the file in question. I have been working on this for about 1.5 weeks and no progress at all. I have come quite far so I don't want to give up.
Tried to open your drawing in 2010, and it said "block cuba references itself".
I'm thinking what you need to do is turn on the triangles with a surface style, and then explode the surface, maybe twice to get it to a "native" dumb set of acad 3d faces. These could then be wblocked out.
In Civil 3D, have your surface displayed as "faces". This will occur by default (I think) if you look at it from a 3D view other than Plan.
Use File > Export > Export to AutoCAD > AutoCAD format.
It will write a file of your model as regular AutoCAD entities.
It's always worked well for me.
I'd like to be able to export or convert my surface into a polyface mesh.... I haven't figured that one out yet.
The File>Export must be done with the regular pulldown menus. Not in the ribbon or from the Big Red C3D in the corner.