For some reason I can't seem to select a sword that I duplicated from a previous one. The previous sword is still selectable but the duplicated one is not. For some reason blender selects whatever is behind the object. However I dragged a box over it about 20 times and found that it worked once, but it selected everything with it.
There are some possible reasons:
- You duplicated the mesh in edit mode, but the object is still the same. See if your swords appear as separate objects in the Outliner.
- Your duplicated object was somehow marked as unselectable. See if the pointer icon is active in the Outliner.
- There's one or more objects in front of the one you're tying to select. Try to move your view port around and select your object from a different angle.
If you have backface culling checked off in the object's Shading menu, you may need to flip the normals.
Change your viewport to the solid rendering mode and see if the object disappears from your viewing angle but is visible from the opposite side.
If this is the case, you'll need to flip the normals in edit mode.
In the outliner if you accidentally type while renaming (without having renaming properly started) you can mess up the selection enabled flags.
Type 'a' to 'select all' (in the outliner) and then 's' to re-enable the selection enabled icons (arrows between eye and camera).