Form a cube to create the walls of the mounting base. The tabs at each corner are folded and pasted on the closest side wall. The decorative strip is optional.

The piece with a hole is used to create the mounting base lid.

The smaller piece with a hole is used to form an insert that will be placed inside the mounting base.

The fully assembled mounting base is shown below. When the mounting base is completed, the spindle attached to the bearing hub (described in the next section) is inserted through the hole in the top of the mounting base.