Abstract: A blade assembly is disclosed herein that avoids the issues associated with aligning mating parts formed on blades with the shell during assembly. The blade assembly disclosed herein eliminates the need for embossments or pierced slots on the shell, and the need for mating tabs on the blades. In one embodiment, the blade assembly includes a shell defining an inner surface, and a plurality of blades arranged around the inner surface of the shell. The plurality of blades each include at least one axially extending leg adapted to contact the inner surface of the shell, and the plurality of blades are attached to the shell via brazing.