To Mirror an Assembly
1. Click File > Save As > Save a Mirror Assembly. The Mirror Assembly dialog box opens.
2. To change the name of the mirrored assembly, type a new name in the box.
3. Clear the Geometry dependent check box to make the geometry of the mirrored assembly independent of the original assembly.
4. To perform symmetry analysis, click the Perform symmetry analysis check box. The options be come available.
5. Expand Options to do the following:
To prevent the automatic reuse of symmetric components, clear the Reuse symmetric components check box.
To select other elements to include in the symmetry analysis, click the check box for Quilts, Datums, and Curves.
6. To see a preview of the mirrored assembly in the graphics window, click Preview. Click again to remove the preview.
7. To create a mirrored assembly, follow one of the procedures below.
Using System Defaults to Mirror an Assembly
You can mirror an assembly quickly, using the system defaults when you click OK in the Mirror Assembly dialog box. Follow the steps below to perform symmetry analysis before the mirror operation.
1. Make sure the Perform symmetry analysis check box is selected. Include additional elements when required.
2. To create a mirror assembly reusing symmetric components, make sure the Reuse symmetric components check box is selected. Click OK.
A new mirrored assembly appears in the graphics window.
3. Resolve regeneration and component placement issues as necessary.
Manipulating Components to Mirror
To manipulate components in the mirror assembly, use the Advanced command.
1. To select components for the mirror operation, click Advanced. The Mirror Assembly Components component chooser opens. When you perform a symmetry analysis, symmetric components are reused by default. Anti-symmetric components are reused as twin components.
2. To exclude a component from the mirror assembly or reuse a component without mirroring it, click in the Action column and choose Exclude or Reuse from the list. Non-symmetrical components are mirrored by default.
3. To rename dependent children of the mirrored assembly, perform one of the following operations:
Rename individual children
Select the component name in the New Name column and type a new name.
Rename all children
1. Click . All components in the tree are selected.
2. Click Generate New File Names. New names are automatically generated according to the option in the File Name Generation area.
4. To change the default File Name Generation option click or clear one of the following check boxes:
Click Use Template to change text in selected original names to new text. Type the original text in the first box and the new text in the second box.
Click Use Prefix to add a prefix to the selected names. Use the default prefix or type a new one.
Click Use Suffix to add a suffix to the selected names. Use the default suffix or type a new one.
5. Click Generate New File Names.
* 
Reused symmetrical components are not given new names.
6. To change dependencies click or clear the component check box in the Dep. Placement or Dep. Geometry columns.
7. Click OK.