Edit mode - Mirror on every axis I am currently trying to model a Companion Cube from Portal 2. I have started this by modelling the corner of the cube. Now I want to mirror it on every axis to get 8 of these, just like the original cube has them. How do I achieve this? I want the final model to be fully 3d-printable, with no intersecting edges or modifiers when I'm done.
You can use  the Mirror Modifier with an Empty.


Just align the Empty where you want to mirror your Object.
Example:







Add a the Mirror Modifier to your Cube and use the Empty as the Mirror Object:



Enable all Axis



Now your Object is mirrored in every Axis: