preferably parallel to the overflow surface 30 of the bell cup 22 the deflector 40 is preferably approximately 22 3 millimeters in diameter and preferably approximately u2153 of the diameter of the spray edge 32 more particularly the diameter of the deflector is less than 40 percent and most preferably approximately 34 5 percent the diameter of the spray edge 32 the deflector 40 is shown in more detail in fig4 a passageway 50 leads from the rear surface 42 to a front surface 52 of the deflector 40 and includes four tubular passageways 54 two shown leading from the rear surface 42 the deflector 40 is retained on the bell cup 22 with a plurality preferably 3 press fit barbed connectors 56 having spacers 58 preferably 0 7 millimeters wide the improved bell cup 22 provides a reduced deviation in particle size which in turn facilitates control of the particulates in other words if the size of the atomized paint particles from the spray edge 32 is known the shaping air velocity turbulence and rpm of the bell cup 22 and paint flow can be adjusted to ensure that the particles are forced to lay flat on the painted surface by the shaping.