Open Utilities > Plugin Manager and select import3DM to enable the plugin. The plugin will be listed under Autodesk Exchange Apps.

Please select

• Import3DM_2024_1 if Alias version is 2024.1 or newer.
• Import3DM_2021_3 if Alias version is 2021.3 or newer.
• Import3DM for older versions of Alias.

Select the Auto Load option to automatically load the plugin the next time Alias starts.
The plugin will be installed under the File > Import menu, as Import 3DM

Click on Import 3DM to open a 3dm file to a new stage or the current stage depending upon the option.
The following datasets are translated

The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. OR, simply double-click the downloaded installer to install the app/plugin.

You can unload the plug-in without uninstalling it by unchecking the "Load/Unload" checkbox associated with the plug-in in the Autodesk® Alias® Plug-in Manager. You may have to restart Alias to completely unload the application.

Please ensure the following pre-requisites are met. 
.NET framework 4.6.1 or above. Download the framework from https://www.microsoft.com/en-us/download/details.aspx?id=49981 
Microsoft Visual C++ 2019 Redistributable or above. Download the files from https://aka.ms/vs/16/release/vc_redist.x64.exe

To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. OR, you can uninstall it from 'Control Panel/Programs and Features' (Windows 7/8.1/10/11), just as you would uninstall any other application from your system.

Limitations: Some trim edges might be distorted when importing certain Rhino parametric geometry.

• Work Around 1: If you encounter such distortions, an optional Rhino 6 Plugin and Rhino 5 Plugin are provided to correct those distortions.
  The plugin provides two commands
  1, DS_Optimize: This would optimize the geometry in Rhino for transfer to Alias and other neutral formats.
  2, DS_SplitKinkyEdges: This would split the edges at c1 discontinuities.
• Work Around 2: Save the file in Rhino as v2. The resulting files will not have distortions when imported to Alias