Calibration: Use OrcaSlicer's built-in retraction calibration test to find optimal settings for your specific printer and filament combination.
Extruder Settings
Configure nozzle, retraction, and extruder-specific parameters.
Nozzle Diameter
- Parameter
nozzle_diameter- Unit
- Millimeters (mm)
- Common Values
- 0.2, 0.4, 0.6, 0.8, 1.0
- Default
- 0.4mm
- Description
- The diameter of your nozzle orifice. This affects line width limits and layer height maximums.
Retraction Length
- Parameter
retraction_length- Unit
- Millimeters (mm)
- Default
- 0.8mm (Direct Drive), 4-6mm (Bowden)
- Description
- How far filament is pulled back during travel moves to prevent oozing and stringing.
| Extruder Type | Recommended Length |
|---|---|
| Direct Drive | 0.5 - 2.0 mm |
| Short Bowden | 2.0 - 4.0 mm |
| Long Bowden | 4.0 - 8.0 mm |
Retraction Speed
- Parameter
retraction_speed- Unit
- mm/s
- Default
- 30 mm/s
- Range
- 20 - 70 mm/s
- Description
- Speed at which filament is retracted. Higher speeds can reduce stringing but may grind filament.
Deretraction Speed
- Parameter
deretraction_speed- Unit
- mm/s
- Default
- 0 (same as retraction speed)
- Description
- Speed at which filament is pushed back after retraction. Set to 0 to use same as retraction speed.
Z Hop When Retracted
- Parameter
retract_lift- Unit
- Millimeters (mm)
- Default
- 0.4mm
- Description
- Lifts the nozzle during travel moves to avoid hitting printed parts.
Retract on Layer Change
- Parameter
retract_before_travel- Type
- Boolean
- Default
- Enabled
- Description
- Whether to retract before Z moves during layer changes.
Minimum Travel After Retraction
- Parameter
retract_before_travel- Unit
- Millimeters (mm)
- Default
- 1mm
- Description
- Minimum travel distance to trigger a retraction. Short moves don't need retraction.
Wipe While Retracting
- Parameter
wipe- Type
- Boolean
- Default
- Disabled
- Description
- Move nozzle while retracting to wipe the nozzle and reduce blobs.
Extruder Offset (Multi-extruder)
For multi-extruder setups, configure the physical offset of each extruder:
- Parameter
extruder_offset- Description
- X and Y offset of this extruder relative to the first extruder.