Revit Polyface Mesh to AutoCAD 3D Solid

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06-13-2018
03:16 AM
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I am having trouble converting a .dwg file which contains Polyface Mesh into a .stl file. I believe the reason I cannot do this is because I can't convert the Polyface Mesh into a solid (when exporting to .stl file, I'm asked to "Select solids or watertight meshes", and when I attempt to select anything, I receive the message "Selected objects must be solids or watertight meshes").
I have attached an example case with a small number of Polyface Mesh objects. I'd like to be able to convert a .dwg file containing many more Polyface Mesh objects to .stl. Thank you.