the invention will be described in details with reference to accompanying drawings fig3 a e show schematically the processing steps of the invention the method comprises extruding of a billet 8 from a vertical channel 2 into a horizontal channel 3 fig3 a of identical cross section areas the vertical channel 2 is formed in a die 1 a horizontal channel 3 is formed between die 1 and slider 5 the die is fixed into a base 4 which is mounted on a bottom plate 9 the slider 5 includes a protrusion or upstanding wall 10 the slider 5 can be moved relative to a base plate 9 by a hydraulic cylinder 7 and moveable position extruding is performed by a punch 6 attached to a press traverse the punch 6 is moveable vertically into the vertical die cavity originally fig3 a the cylinder 7 moves the slider 5 via the piston into a limit right position in which the protrusion 10 aligns with a vertical wall of the die to close the vertical channel 2 the punch 6 is in a retracted position above the vertical channel 2 and a well lubricated billet 8 is inserted into the channel 2 during a working stroke the punch 6 moves downwardly and into the vertical channel 2 acting on the billet 8 and extrudes it into a horizontal channel 3 that is formed between the vertical wall of the die 1 and the slider 5 simultaneously the billet 8 acts on or pushes against the protrusion 10 and moves the slider 5 in the extrusion direction to the.