Mirror Bodies
Use the Mirror Bodies tool to mirror PolyNURBS bodies across a symmetry plane.
- 
                 On the PolyNURBS ribbon, select the Mirror
                        Bodies tool. 

 - Optional: Click Bodies on the guide bar, then select one or more PolyNURBS bodies in the modeling window.
 - 
                Click Plane on the guide bar, then select a face or a
                    reference plane to position the mirror plane.
                A preview of the mirror plane appears when you hover over a face or reference plane. Once a plane is selected, a preview of the mirrored body is shown.
 - 
                Optional: By default, both the original and the mirrored bodies will be
                    retained in the model. To retain only the mirrored bodies, click
                        Mirror Options
                    
 on the guide bar, then clear the Keep
                        Original checkbox.
             - 
                Click Apply
                    
                    on the guide bar or microdialog.
             - 
                Right-click and mouse through the check mark to exit, or double-right-click.
                Tip:
- You can use a global or user-defined reference plane as your mirror plane.
 - To reposition the mirror plane using the Move tool, click the 
 icon. - To align the mirrored object to the X-, Y-, or Z-axis, click the 
 icons.