3dm File

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)

3DM (Rhino) file format for Rhinoceros software allows to store your 3D model as smooth NURBS surfaces, triangular meshes, points or just curves. Rhino 3D models for download, files in 3dm with low poly, animated, rigged, game, and VR options.

File TypeRhino 3D Model

Developer	Robert McNeel & Associates
Popularity
Category	3D Image Files
Format	Binary

What is a 3DM file?

A 3DM file is an open-source 3D model format and native file format for Rhinoceros. It contains a 3D model which includes surface, points, and curve information. 3DM files allow CAD, CAM, CAE, and computer graphics software to accurately save and exchange 3D geometry using both NURBS and polygon mesh representations.

The 3DM open-source library is available at www.opennurbs.org/.

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