(from Autodesk Exchange) With
the Autodesk® Revit® Extension for Autodesk® Fabrication, Autodesk®
Revit® 2016 software users can save models that have been produced in
Revit 2016 or Revit MEP 2016 using Fabrication Parts to a file
compatible with Autodesk® Fabrication 2016 software products
(Fabrication CADmep, Fabrication ESTmep, Fabrication CAMduct). This
interoperability allows users to utilize fabrication model data authored
in Revit for use in Fabrication workflows. Additionally, supported
parts in models created in the Fabrication software products can be
opened for continued modelling in Revit, or Revit hand-off at the end of
the project.
The add-in can be found here.