A multi-set robot is provided that includes a first robot set having a first motor coupled to a first rotatable member that is rotatable about an axis; a second motor coupled to a second rotatable member that is rotatable about the axis; a first plurality of blades vertically spaced from one another; and a first linkage adapted to enable coordinated movement of the blades on rotation of the first and second rotatable members. The robot also includes a second robot set positioned above the first robot set having a third motor coupled to a third rotatable member that is rotatable about the axis; a fourth motor coupled to a fourth rotatable member that is rotatable about the axis; a second plurality of blades vertically spaced from one another; and a second linkage adapted to enable coordinated movement of the blades on rotation of the third and fourth rotatable members. Other aspects are provided.