ImportExport 3DM

Add Import/Export of 3DM files to FreeCAD

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Some coded added lots more to do.

Please report any problems as Issues - Thanks

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Requirements

• rhino3dm - Open Python Rhino 3dm library

You need to use the same version and level of Python that FreeCAD is using to install rhino3dm.

You can find out the version FreeCAD is using by using

FreeCAD | About freecad | Libraries 

or Looking at the heading in FreeCAD python console

Installation - Add on Manager

• The workbench is available via the FreeCAD AddonManager
• However users may have to install rhino3dm depending on OS.
• One suggestion

  • Start FreeCAD

  • In python console

    • import sys
    • print(sys.path)

  • Select one the the directories listed

    If FreeCAD 1.0.0 is using Python 3.11

    python3.11 -m pip install rhino3dm --no-cache -t [directory path]

  • restart FreeCAD

Installing for FreeCAD 1.0.0 on MacOS

• FreeCAD 1.0.0 on Mac uses Python 3.11

  Make sure Mac is also 3.11 using homebrew

  brew instal python@3.11

• install rhino3dm in FreeCAD path

• Start FreeCAD

  • In python console
    • import sys
    • print(sys.path)

• python3.11 -m pip install rhino3dm --no-cache -t '/Applications/FreeCAD 1.0.0.app/Contents/Resources/lib/python3.11/site-packages'

Alternate Installation ( Linux )

• sudo apt install python3-pip
• pip3 install --user rhino3dm
• Change directory to .FreeCAD/Mod
  i.e. with a dot
• git clone https://github.com/KeithSloan/ImportNURBS.git
• start or restart FreeCAD

Rhino - API h

https://developer.rhino3d.com/api/rhinocommon/

Sample Rhino files

Can be downloaded from https://www.rhino3d.com/download/opennurbs/6/opennurbs6samples

Note on testing exports with Blender 3dm Importer

Acknowledgements

• Icon design by Freepik
• 3dm testCases kindly supplied by
  • Jonne Neva (cheezebreeze)
  • EdWilliams
  • Sven

Developers

• Chris Grellier
• Keith Sloan