Mirror UVs
From Nevercenter 3D Modeling Wiki
Default Shortcut: None
Menu Path: UVs/Materials > Mirror UVs
Description
This command will arrange the selected UVs so that they reflect their mirrored counterparts. The result will be overlapping UVs allowing the mirrored faces to use the same texture space. An object must have Symmetry calculated and enabled for this command to work.
Notes
- If necessary, the selected components will be broken off into a new UV island before moving, so that no unselected UVs are affected.