I am stumped. I cannot figure out how to get this thing to work. I saw one answer here that said something about moving the mesh off the object's center point, but it looks to me like the mesh is nowhere near the object's origin when I try to use the Mirror function.
Steps: (1) Open new general file, with basic cube already formed. (2) Tab into Edit mode. (3) Use the Move/Grab tool to shift the cube's mesh off the global origin in X and Y directions. It looks to me like the object's origin (orange dot) remains at the global origin. (3) Select Mesh -- Mirror -- X Global (or Y Global or X Local or Interactive Mode or ANY of the possible subselections for the Mirror function). Result: Nothing. Nothing. And more nothing. Nothing happens. How does this thing work?
I read the online manual. No help there, as usual.
Oh, and when I change the pivot point to 3D cursor and then try the Mirror command, instead of creating a duplicate or copy of the cube mesh in the mirror position, it simply MOVES the cube mesh to the mirror position.
I don't get it.