Have you ever wanted to create Grids from a linked DWG in Revit? Isolate the grids in your dwg and link it into Revit. Then add the nodes below shown in the image. It only requires 5 nodes... Yes Really...
New to Dynamo? Download it for free at www.dynamobim.org and get started.
Want to learn more about working with dwg?
Attend my lecture on "Dynamo for Contractors" At Autodesk University 2015