Split with Planes

Use the Split: Planes tool to split lines, surfaces, or solids.

From the Geometry ribbon, click the Split > Plane tool.

Figure 1.
Select Lines, Surfaces, or Solids from the Target selector on the guide bar.
Select a line or surface in the model. If you selected Solids in the previous step, go to Step 4.
1. Click Tool on the guide bar.
2. Left-click to place the plane on the model.
3. Use the Vector tool to adjust the position of the split plane.
4. Click Split on the guide bar.
Select a solid in the model.

Select Plane, Nodes, or Points from the Tool selector on the guide bar.

Selection	Procedure
Plane	Left-click to place the plane on the model. Use the Vector tool to adjust the position of the split plane. Click Split on the guide bar.
Nodes	On a meshed solid, select nodes to define split lines. Click Split on the guide bar.
Points	Select at least three points forming a plane to trim solids. Click Split on the guide bar.

Tip:

Select a splitting plane using reference entities or features that are disconnected from the geometry you want to split, including points in space.
You can modify your surface selection after selecting a splitting plane. Split preview lines will update appropriately.
Use snap points to snap the splitting plane to predefined points on lines and surfaces, such as middle and end points. Clicking a snap point automatically selects attached surfaces/solids.

Note: The .gif shown in the image above is displayed when you select surfaces as the entity selection. You will see a different .gif file depending on which entity and which tool option you select.

Split: Planes Tool

An overview of the Split: Planes tool.

Use the Split: Planes tool to split lines, surfaces, or solids using a plane or a surface.

Access: Go to Geometry > Split > Plane.

Options

Fill cut loops: Create a new surface if the edges being split form a closed loop.
Extend trimmer: Extend the trim beyond the trimmer boundaries.