Part Modeling > Part Modeling > Edit Features > Mirror > To Mirror Geometry
To Mirror Geometry
1. In the selection filter at the bottom right of the Creo window, select Geometry, Surface, Datums, Curve, Quilt, or Body.
2. In the Model Tree or graphics window, select the geometry, datums, curves, quilts, bodies, or surfaces to mirror.
3. Click Model > Mirror. The Mirror tab opens.
4. Select a planar reference to mirror across. You can select a datum plane, intent datum plane, or planar surface.
* 
You can redefine the mirror plane by clicking any other planar reference in the graphics window.
5. To hide the original mirror geometry, click the Options tab, and select the Hide original geometry check box. This is not available when you mirror bodies.
6. Click OK.
* 
When you mirror bodies in a part, a new body is created for each source body. Each new body is associative with the geometry of the source body, but is not associative with the other properties of the source body.