the present invention includes a method of electroplating an object , where the objects are stacked in at least one sleeve and the objects have an interior surface , that upon stacking , form a stack conduit . the sleeves are then racked to provide fluid communication between a plating solution reservoir and the stack conduit . plating of the inner surfaces of the objects occurs by flowing an electroplating solution from the reservoir through the stack conduit in the presence of a current . the present invention also includes systems for carrying out the above method .