The OpenNURBS Initiative was founded by Robert McNeel & Associates in January 2000, with the sole purpose of providing CAD, CAM, CAE and computer graphics software users reliable methods for transferring 3D geometry between applications via the 3DM file format. The 3DM (3D Model) file format is the native file format of Rhinoceros, the NURBS modeling software from Robert McNeel & Associates. The '3DMImport' submenu consists of the following commands: Import-Imports an 3DM file Help-Displays the 3DM Import for Inventor help file Register-Registers your copy of 3DM Import for Inventor About-Displays the 3DM Import for Inventor About box. Once installed, it automatically loads itself into Inventor and adds a new submenu called '3DMImport' to the Inventor menu. 3DM Import for Inventor is very easy to use. it does not contain boundary edges) then 3DM Import for Inventor will create a closed body feature, otherwise an open surface will be created. 3DM Import for Inventor creates trimmed planar surfaces for each triangle/quad and knits them together to create a body. A polygon mesh in a 3DM file is comprised of a set of triangular and/or quad faces. 3DM Import for Inventor reads polygon mesh data stored in 3DM files and imports it into Inventor. This add-in gives Inventor the ability to import geometric data from 3DM files. 3DM Import for Inventor is a Rhinoceros 3DM file import add-in for Inventor.

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