Create a Reference Plane

Reference planes can be used with the Sketch, Slice, and Mirror tools to create or modify geometry, or to create section cuts.

On the Geometry ribbon, select the Reference Plane tool.
In the guide bar, choose a plane creation method from the drop-down menu.

Previews for planes based on the selected option will appear as you move your cursor in the modeling window.

Follow the directions in the workflow help text underneath the guide bar to define the plane.

What you need to select in the modeling window varies based on the plane creation method you chose in the previous step.

Method	What to Select
Three Points	Select three points to preview the plane.
Offset	Select a plane and enter the offset value.
Midplane	Select two planes and enter a ratio.
Normal to Edge	Select an edge and enter a ratio.
At an Angle	Select a plane and an axis on the plane.
Normal to Edge at Point	Select an edge and a point.
Cylinder Tangent	Select a cylindrical face and a point.
Parallel to Screen	Select a point.
Unreferenced	Select a plane or planar face.

Click Apply on the guide bar or microdialog.

The plane is created in the modeling window and is also available in the Model Browser’s References directory.
Right-click and mouse through the check mark to exit, or double-right-click.
Tip:
- Double-click a reference plane to edit it. Resize a reference plane by selecting a corner point or an edge and dragging it with the Move tool. Other options for editing a reference plane will vary based on how the plane was created.
- Any referenced plane can be converted to an unreferenced plane by clicking the icon in its microdialog or by right-clicking the name of the plane in the History browser and selecting Break Reference in the context menu. Once a plane's reference is broken, it becomes an unreferenced plane and cannot be re-referenced to the model’s geometry. Unreferenced planes can be repositioned with the Move tool option in the microdialog.

Video: Reference Planes