Macro MeshToPart

import FreeCAD,FreeCADGui,Mesh,Part,MeshPart for obj in FreeCADGui.Selection.getSelection: if "Mesh" in obj.PropertiesList: faces = [] mesh = obj.Mesh segments = mesh.getPlanes(0.01) # use rather strict tolerance here for i in segments: if len(i) > 0: # a segment can have inner holes wires = MeshPart.wireFromSegment(mesh, i) 		    # we assume that the exterior boundary is that one with the biggest bounding box if len(wires) > 0: ext = None max_length = 0 for i in wires: if i.BoundBox.DiagonalLength > max_length: max_length = i.BoundBox.DiagonalLength ext = i 	       	wires.remove(ext) # all interior wires mark a hole and must reverse their orientation, otherwise Part.Face fails for i in wires: i.reverse # make sure that the exterior wires comes as first in the lsit wires.insert(0, ext) faces.append(Part.Face(wires)) shell=Part.Compound(faces) solid = Part.Solid(Part.Shell(faces)) name = obj.Name FreeCAD.ActiveDocument.removeObject(name) FreeCAD.ActiveDocument.addObject("Part::Feature",name).Shape = solid