CREALITY CR-10 V3 3D Printer E3D Direct Drive Precise Extrusion 300*300*400mm US Direct Titan extruder: The direct extruder is right above the hot end with little space in between, which enables the extruder to push the filament directly into the nozzle. Since it minimizes the distance for filament traveling to the hot end, the direct extruder is more helpful and reliable when producing 3D prints with flexible soft filaments like TPU and ABS. Furthermore, the biggest benefit for using direct extruder is easier filament retraction thus avoiding filament stringing and oozing during printing. .