Here’s a demo of a script we’re using to create section boxes in Grasshopper similar to those in Revit. This doesn’t split geometry but helps with animating or managing a large file in your viewport.
The section box script is similar to Luis Fraguada’s clipping plane script, except this script’s input is a closed brep and uses Python.
Rhino will limit the number of clipping planes in a viewport to 10. The script will work on any closed brep with 10 or fewer faces. It can also be quickly edited to work with planes. Enjoy!