situated below the arriving strand piece 1 is switched into synchronized travel mode by the help of a position indicator i e a light barrier and travels with the drive while the piston body 7 turns up simultaneously and the deburring pistons 6 are pressed in by the lower surface of the strand piece 1 after a higher speed is switched on the deburring pistons 6 overtake the forward end of the strand piece 1 deburr jump up and thereby strike off horizontal burr rests and are turned away in the other final position in a cleaning way and opening the passage for the strand piece 1 before travelling over the back end of the strand piece 1 the starting of the deburrer is initiated again correspondingly the deburrer turns the piston body 7 upwards presses against the lower surfaces with the deburring piston 6 tilts into the small deburring angle and deburrs the cutting burr 2 at the backward end of the strand piece 1 which can be either stationnary or running in opposite direction thereafter the deburrer returns to the starting position to rotate away and to wait for the following strand piece 1 with u2018 counter deburring u2019 u2014 strand piece 1 and deburring carriage 5 run against one another u2014 the energy required for deburring or knocking off of the cutting burr 2 is the sum of the respective kinetic energy whereby the strand piece 1 also has a very big portion of the disposable total energy because of its weight m 1 u00b7 v 1 2 2 m 5 u00b7 v.