Q3D Q3D Raptor Filament Drive Gear ( Optimized for ABS / Nylon ) 5mm Bore
This is the custom extruded and machined spur gear used to drive the filament in a 3D printer's extruder. The Raptor is optimized for ABS and Nylon printing. The 20 teeth of the spur gear have a groove machined into them to help align the filament during extrusion. The positive displacement of the gear allows the filament to resist slipping and allows extremely fast retractions. It is CNC machined from a brass alloy. There is a 4-40 set screw used to secure it to a 5mm shaft (most NEMA 17 steppers use this size shaft). A perfect upgrade for the Makerbot MK7 and MK8 extruders or for your own custom extruder design!