Split with Nodes
Use the Split: Nodes tool to split surfaces using ordered (node list/path) and non-ordered node selections.
- 
                From the Geometry ribbon, click the Split > Nodes tool.
                 
 Figure 1.
- Optional: 
                Select surfaces to split.
                Note: Target surface selection on the guide bar is optional if only two nodes are selected. If selecting a node list or node path with two or more nodes, you should select the target on the guide bar before selecting nodes.
- 
                Activate the Nodes selector on the guide bar then make your node selection according to the
                    following table.
                Option Description Nodes Left-click on 2 nodes. Node List Left-click on individual nodes to create the desired path. Node Path - Click  on the guide bar to launch the advance selection menu
                                    and select by path. on the guide bar to launch the advance selection menu
                                    and select by path.
- Left-click to create the path's start and end points. A preview of the path will be displayed.
 
- Click 
- Click Split on the guide bar.