To follow up on an email from @pieper from 2017
Transferring models is still a work in progress, but lately I’m looking at glTF  as an interesting option.
I would like to mention that VTK has an improved support for glTF 2.0. It should be possible to create a Slicer extension leveraging the new vtkGLTFReader, vtkGLTFImporter and vtkGLTFExporter classes.
You can read more details about the functionality here:
We’re working on this extension. It should be available soon.
Hi @cpinter - is there news to report on the glTF extension? For context, I understand that the latest Blender supports glTF import and export so it would be great for interoperability.
We added a module that exports a valid glTF file from the Slicer scene at the project week. Here it is:
I’m sure it will need some tweaking, but this works already.