- Ensure
               the model meets the criteria described in 
                        Prepare a model for sculpting.
               For example, to view the UV texture coordinates for a model in 3ds
               Max select Modifiers > UV Texture Coordinates
                  > Unwrap UVW. The Unwrap UVW modifier
               has many tools for correcting UV texture coordinate issues on the
               model. Consult the 3ds Max documentation for further information.
               NoteModifying the layout
                     and distribution of the UVs on a mesh does not affect the layout
                     and distribution of the faces on the 3D polygonal mesh, but it does
                     impact any painting and texture mapping you might want to perform. For
                     more information, see  UVs overview.
                   
 
- Select File > Export,
               or alternately select File > Export Selected to
               export only the currently active selection.
               The Select
                     File To Export window appears.
                
- Enter a file name then set the Save
                  As Type to OBJ and click Save.
               The OBJ Export Options
                  window appears.
                
- From the Presets drop-down
               list, select Mudbox, then click Export.During export, a window
                  showing the progress and names of exported objects appears.
                NoteAlternately, the
                     Autodesk FBX ® file
                     format can be used to export data from 3ds Max to Mudbox. For more
                     information, see  Import using FBX.
                   
 
- When the export is complete, click Done.
            
- In Mudbox, depending on your requirements,
               select File > Open or File
                  > Import, and select the model you exported from 3ds
               Max. For more information on import options, see 
                        Open a model or 
                        Import a model.