Create a 3D Cutaway in the 3D Window

To cancel the operation: Note that the tabs on all four sides change into garbage cans: if you change your mind while dragging, just drag the Cutting Plane into one of the garbage cans (or press Esc) to cancel the operation.
6.
Click Finalize if you are satisfied with the Cutting Plane.
2.
Choose Create Custom Cutting Plane.
Note: This command is also available from the Standard Toolbar.
4.
Click when the Cutting Plane is in the right place. The Finalize floating command appears. Click Finalize if you are satisfied with the Cutting Plane.