Apparatus and associated methods relate to dynamically generating commands to manage the flow rate of a powder as a function of time in response to arbitrarily shaped target parts traveling along a conveyor. In an illustrative example, a controller may receive shape information about each target part as the part travels along the conveyor. The controller may dynamically generate commands to a pump to control the flow rate of powder to a reciprocating nozzle. In some embodiments, the controller may generate motion trajectory commands to the reciprocating nozzle to deliver a predetermined amount of powder to the target part as the target part travels along the conveyor.
