To mirror an object across the two non-principal planes:
- Select the object to mirror.
- Click Edit tab > Transform panel > Mirror.
- Click
Create multiple copies of the same item
on the
Mirror toolbar.
The object is copied three times and mirrored across the two non-principal planes.
A preview of the copied objects, together with the mirror planes, is displayed:
- Click
Apply
to accept the changes or
Cancel
.