Nozzle Retraction Nozzle retraction is the process of pulling filament back into the extruder to reduce oozing and stringing during travel movements. It improves print quality by preventing filament from leaking out when the nozzle moves between parts. Retraction settings include distance and speed, which must be optimized based on filament type and print speed. Improper retraction can cause under-extrusion or clogging. Direct drive extruders require shorter retraction distances, while Bowden setups need longer retraction due to filament slack.
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