A filament feeding assembly for a fused filament fabrication system, the filament feeding assembly comprising: a plurality of filament feeders arranged next to each other in a row, wherein each filament feeder comprises an outlet and wherein the respective outlets of the filament feeders are aligned on a straight line; a first guide rail and a second guide rail, both being arranged parallel to the straight line; a first connector (410, 1010) movably coupled to the first guide rail and comprising a first filament entrance for selectively receiving a filament from one of the outlets; a second connector (424, 1024) movably coupled to the second guide rail and comprising a second filament entrance for selectively receiving a filament from one of the outlets; two actuators (224, 226), each being arranged to move one of the connectors (410, 424, 1010, 1024) in front of the respective outlets of the filament feeders; a first suspension (414, 1014) arranged to adjustably couple the first connector (410, 1010) to the first guide rail, so that a distance between the first guide rail and the first connector (410, 1010) is adjustable; and a second suspension (428, 1028) arranged to adjustably couple the second connector (424, 1024) to the second guide rail, so that a distance between the second guide rail and the second connector (424, 1024) is adjustable; wherein the first and second connectors (410, 424; 1010, 1024) are arranged to pass each other by way of adjusting the distance between the first connector (410, 1010) and the first guide rail and/or adjusting the distance between the second connector (424, 1024) and the second guide rail. a plurality of filament feeders arranged next to each other in a row, wherein each filament feeder comprises an outlet and wherein the respective outlets of the filament feeders are aligned on a straight line; a first guide rail and a second guide rail, both being arranged parallel to the straight line; a first connector (410, 1010) movably coupled to the first guide rail and comprising a first filament entrance for selectively receiving a filament from one of the outlets; a second connector (424, 1024) movably coupled to the second guide rail and comprising a second filament entrance for selectively receiving a filament from one of the outlets; two actuators (224, 226), each being arranged to move one of the connectors (410, 424, 1010, 1024) in front of the respective outlets of the filament feeders; a first suspension (414, 1014) arranged to adjustably couple the first connector (410, 1010) to the first guide rail, so that a distance between the first guide rail and the first connector (410, 1010) is adjustable; and a second suspension (428, 1028) arranged to adjustably couple the second connector (424, 1024) to the second guide rail, so that a distance between the second guide rail and the second connector (424, 1024) is adjustable; wherein the first and second connectors (410, 424; 1010, 1024) are arranged to pass each other by way of adjusting the distance between the first connector (410, 1010) and the first guide rail and/or adjusting the distance between the second connector (424, 1024) and the second guide rail.