warm gas at a position adjacent the exit of the filaments from the cabinet in a generally radial outward direction and f means providing a pressure differential between the top and bottom of the cabinet to maintain the flow of gas in a downward direction referring generally to the drawings the method and apparatus according to the present invention is shown in diagram in fig1 the enclosed vertically elongated cabinet 10 is provided with at least one conventional spinnerette 12 three spinnerettes 12 14 and 16 are illustrated in fig3 these spinnerettes are supplied with spinning solution through conduits 18 20 and 22 leading thereto it should be understood that while the term 34 spinning solution 34 is used herein the supply material may also be a molten material each of the conventional spinnerettes 12 14 and 16 have a multiplicity of holes for the solution to emerge the solution emerges from the holes in each spinnerette in the form of filaments in a vertical direction as they progress downward solvent diffuses from within the filaments to the surfaces thereof and is volatilized whereby the filaments begin to individually solidify and strengthen while various inert gases may be used in connection with.