Convert 3DM to OBJ

The 3DM file extension, standing for "3D Model", is associated with the openNURBS initiative, which facilitates the exchange of 3D geometry across CAD, CAM, CAE, and computer graphics software. Developed by Robert McNeel & Associates, it serves as the native format for Rhinoceros (Rhino) software. Introduced to address interoperability challenges, 3DM files store precise 3D models using NURBS (Non-Uniform Rational B-Splines) and polygon mesh representations. This format is widely adopted due to its open-source nature, enabling developers to read and write 3DM files without proprietary restrictions, thus promoting seamless data sharing in 3D modeling workflows.

The OBJ (Object) file extension, related to Wavefront 3D Object, is a standard 3D image format developed by Wavefront Technologies. It is widely used for representing 3D geometry, including the position of vertices, texture coordinates, and normals. OBJ files are versatile and commonly employed in various CAD, 3D printing, and computer graphics applications due to their simplicity and compatibility with numerous 3D modeling programs. Introduced in the 1980s, the OBJ format has become a cornerstone in the industry, facilitating easy exchange and rendering of 3D models across different platforms.