Mirroring is another Blender process that relies heavily on the Object Origin. That point is going to determine where the invisible mirror is going to be placed. Our newly modeled base is a great illustration. By default, the Object Origin is still right in the middle of our default cube. We put thought into the sizing of our plate. With a mirror placed there, we would be losing some of the length of our base.
Our final dimensions would fall short of the plan:
Blender mirrors according to the Object Origin
However, if the Object Origin was moved to the right edge of our base, then mirroring ...
