The basic logic in this tutorial is to create a tower which has geometry too complex to build in Revit. We then pass it through AutoCAD to export a closed solid .dwg with layers. As of now Rhino only exports .dwg files as meshes,
Andrew Heumann on It’s coming…. AutoCAD on a Mac!?!?!:
It's easy to get the beta, too; just go to autodesks beta website and register as having a Mac - the[+]
Revit Video Tutorial - Exporting DWG - Solids http://ow.ly/2xkbs - Old video, settings are still relevant. I'll post an updated version soon 2 days ago
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