Convert 3D face to linework

[Anonymous]

I received a 3D drawing but only need linework from it.  I have flattened it out so I am able to export the linework. The problem is when I import the drawing into another software (Trimble Business Center), the lines are still 3D face and am not able to treat it like linework. Is there a way to convert a 3D face into line or polyline in C3D?

[Anonymous]

Did yoy tried to explode it?

[TerryDotson · Accepted solution]

Grab the 3DFTO3DP.LSP from the Free Stuff section of the site below.  It converts a selection set of 3DFACES into 3DPOLY's (which can be exploded).

[antoniovinci]

...or you can use the oldest method to flatten a 3D drawing, i.e. plotting to a .DXB file. 

[Anonymous]

After downloading the file what do I do with lsp?

[Anonymous · Accepted solution]

Just drag 'n drop the lisp file onto your drawing, and your good to go.

Another way to get the linework from the 3d faces is to turn them into regions - enter Region at the commandline. When exploded, regions become lines. You can also get the area of a 3d face by turning it into a region and listing it.

[Anonymous]

Thank you everyone, the lsp worked. I tried using region command also and that worked as well.

[mlb6d9]

The region thing then exploding them worked a treat - Thanks!

[NICKDOW]

Use the FLATTEN command. 

[VRD123]

Extrude the 3D faces (say 1mm deep) and then use the FLATSHOT command to get the polylines.