How to add a lattice on cube's surface?

Question

I made a single lattice around a cube in the following way:

1. Added a cube on scene.
2. In Edit mode I added loopcut with Ctrl+R.
3. Removed corner vertices.
4. Converted the cube to curve.
5. In Object Data tab I changed geometry properties and received next object:

Now I need to make double lattice like this(left side):

But when I made double lattice by previous way I have got object shown in the right side of previous picture.
How can I get a required object?
May be exists better way to make this objects?

Answer 1

You can either use the wireframe modifier or the skin modifier:

For Wireframe modifier:

• Add Cube
• Subdivide with 2 divisions
• delete edge vertices
• add wireframe modifier

For skin modifier:

• Add Cube
• Subdivide with 2 divisions
• delete edge vertices
• delete all faces (faces only!)
• apply skin modifier
• Scale with ctrla