Importing/Open a 3D file from 3ds Max Not As A Mesh?

[spinecad]

I open a 3D file imported from the 3ds Max in the AutoCAD but when it opened in the AutoCAD, it full of meshes.

 

How to open/import a 3D file from 3ds Max to the AutoCAD so that it not as a mesh and it's a solid?

[JD Mather]

does 3ds max have an option to export (or save) as NURBS solid (or surfaces)?

As far as I know 3ds files are of little use other than for visualization.

[spinecad]

does 3ds max have an option to export (or save) as NURBS solid (or surfaces)?

As far as I know 3ds files are of little use other than for visualization.

 

Below is the list of file extensions of the 3ds Max able to exports:

 

.fbx (autodesk)

.3ds (3d studio)

.ai (adobe illustrator)

.ase (ascii scene export)

.atr (lightscape material)

.blk (lightscape blocks)

.dae (autodesk collada)

.df (lightscape parameter)

.dwf (publish to dwf)

.dwg (autocad)

.dxf (autocad)

.flt (flight studio openflight)

.htr (motion analysis htr file)

.igs (iges)

.lay (lightscape layers)

.lp (lightscape preparation)

.m3g (jsr-184)

.obj (gw:: obj-exporter)

.stl (stereolitho)

.vw (lightscape view)

.wrl (vrml97)

[JD Mather]

dwg is your only hope, but I think 3ds uses faceted traingular planar surface - not smooth NURBS.