The Computer-Aided Design ('CAD') files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Each CAD and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or real-world item, product, or good it may purport to portray. It seems there's no direct way to import.3DM files. However, according to this tutorial you can export from Rhino as.LWO (Lightwave) or.3DS (3D Studio). Both can be imported to Blender.STL export is also an option, I suppose. Importing to Rhino from Blender should be easier using same formats. 1,050,081 3D models, available for download in MAX, OBJ, FBX, MB and other file formats, ready for VR / AR, animation, games and other 3D projects. The 3dm file extension is associated with 3DML (Three Dimensional Markup Language). 3DML is a simple markup language similar to HTML, the language used to build pages on the Web. 3DML creates, or “describes”, Internet-ready, three-dimensional environments called spots.
3dm File Format
3dm File Viewer
| Name | 3DM | STL |
| Full name | Rhino 3D Model | Stereolithography File Format |
| File extension | .3dm | .stl |
| MIME type | ||
| Developed by | Robert McNeel & Associates | 3D Systems |
| Type of format | ||
| Description | The Rhinoceros file format (.3DM) is useful for the exchange of NURBS geometry. The Rhino developers started the openNURBS Initiative to provide computer graphics software developers the tools to accurately transfer 3-D geometry between applications. An open-source toolkit, openNURBS includes the 3DM file format specification, documentation, C++ source code libraries and .NET 2.0 assemblies to read and write the file format, on supported platforms (Windows, Windows x64, Mac, and Linux). | STL is a file format native to the stereolithography CAD software created by 3D Systems. This file format is supported by many other software packages. It is widely used for rapid prototyping, 3D printing and computer-aided manufacturing. STL files describe only the surface geometry of a three-dimensional object without any representation of color, texture or other common CAD model attributes. The STL format specifies both ASCII and binary representations. Binary files are more common, since they are more compact. |
| Technical details | An STL file describes a raw, unstructured triangulated surface by the unit normal and vertices (ordered by the right-hand rule) of the triangles using a three-dimensional Cartesian coordinate system. In the original specification, all STL coordinates were required to be positive numbers, but this restriction is no longer enforced and negative coordinates are commonly encountered in STL files today. STL files contain no scale information, and the units are arbitrary. | |
| File conversion | 3DM conversion | STL conversion |
| Associated programs | Autodesk Inventor Fusion, McNeel Rhino | TurboCAD, GOM Inspect, STL Viewer, Geomagic Explorer, Parametric Technology Creo, Dassault Systemes CATIA, KeyCreator, MeshLab, SolidWorks, Pro/Engineer, CloudCompare, Blender, AutoCAD, 3D Studio Max, Autodesk Inventor, Mechanical Desktop |
| Wiki | https://en.wikipedia.org/wiki/Rhinoceros_3D | https://en.wikipedia.org/wiki/STL_(file_format) |