An apparatus for forming a smoke filter comprising: a forming nozzle through which a fibrous bundle material passes, the forming nozzle comprising a converging passage, at least one first internal cavity in fluid connection with a first working fluid source, and a plurality of first holes fluidly connecting the at least one first internal cavity with a working surface of the forming nozzle, the plurality of first holes further positioned and directed such that in passing through the plurality of first holes, the first working fluid conveys the fibrous bundle material through the forming nozzle in a transport direction; a guide pin disposed along a central axis of the converging passage, the guide pin comprising an elongated body which tapers in the transport direction, wherein the guide pin further comprises an excitation device, wherein the excitation device preferably is a vibration generator linked vibrationally to the guide pin, wherein the excitation device further preferably is a motor non-rotationally connected to the guide pin, wherein the excitation device even further preferably is a pneumatic self-alignment system; and a bobbin disposed downstream of the forming nozzle, the bobbin comprising a first passage through which the fibrous bundle material is conveyed, at least one second internal cavity in fluid connection with a second working fluid source, and a plurality of second holes fluidly connecting the at least one second internal cavity with the first passage, the plurality of second holes positioned such that in passing through the plurality of second holes, the second working fluid infuses the fibrous bundle material. a forming nozzle through which a fibrous bundle material passes, the forming nozzle comprising a converging passage, at least one first internal cavity in fluid connection with a first working fluid source, and a plurality of first holes fluidly connecting the at least one first internal cavity with a working surface of the forming nozzle, the plurality of first holes further positioned and directed such that in passing through the plurality of first holes, the first working fluid conveys the fibrous bundle material through the forming nozzle in a transport direction; a guide pin disposed along a central axis of the converging passage, the guide pin comprising an elongated body which tapers in the transport direction, wherein the guide pin further comprises an excitation device, wherein the excitation device preferably is a vibration generator linked vibrationally to the guide pin, wherein the excitation device further preferably is a motor non-rotationally connected to the guide pin, wherein the excitation device even further preferably is a pneumatic self-alignment system; and a bobbin disposed downstream of the forming nozzle, the bobbin comprising a first passage through which the fibrous bundle material is conveyed, at least one second internal cavity in fluid connection with a second working fluid source, and a plurality of second holes fluidly connecting the at least one second internal cavity with the first passage, the plurality of second holes positioned such that in passing through the plurality of second holes, the second working fluid infuses the fibrous bundle material.