As a final exercise of this tutorial, let's create a pair of dumbells. Go back to the unchamfered cube and select all edges that form squares parallel to the front view. You can do that by selecting all edges and then deselect all vertical edges in the Top View and all angled edges in the Front View.
Go to MeshSmooth level of our object. You have just created a dumbell. Press "W" to go to the Move Tool, then Shift + Drag our object to create a clone. There you have it: a pair of dumbells!