I mention SALOME above - it's a bit of a sister project to FreeCAD, and it has extensive mesh generation facilities as part of its role as a CFD pre-processor.

I mention SALOME above - it's a bit of a sister project to FreeCAD, and it has extensive mesh generation facilities as part of its role as a CFD pre-processor. I've no doubt you could use this to assert fine control over a surface mesh export.