Will,
I came across this post when I was looking for a python library that went from VTK to 3MF. Still not there and since I got my management lobotomy, I’m not up to writing something myself.
But good news. You can save as VRML (*.wrl) and Stratasys GrabCAD can read that format. We are a Stratasys reseller and also an Ansys reseller, so my tool converts simulation results through VTK to VRML and we 3D Print color objects that way.
I just use the following in Python:
myplt = pyvista.Plotter()
#add what I want to plot
myplt.export_vrml(“myfile.wrl”)
You can save as VTK in your program then test in Paraview as well.
Hope this helps.
Eric
Principal & Co-Owner
PADT, Inc