Retraction Optimizer

How it works

Configure your printer and filament settings and generate a test pattern to print. Choose the setting with the least amount of stringing and also the least amount of gaps within the extrusions.

Use [hotend_temperature] and [bed_temperature] placeholders in your start G-code to automatically insert the configured temperatures.

⚠️ IMPORTANT DISCLAIMER

USE AT YOUR OWN RISK!

You are solely responsible for monitoring your 3D printer during the entire test print.
The author is NOT liable for any damages to your machine, injuries, or other losses.
Never leave your printer unattended while running this test.
Always verify the generated G-code is safe for your specific printer before starting.

Printer Preset

Select Printer:

Or upload JSON:

Printer & Material

Bed X (mm):

Bed Y (mm):

Bed Temp (°C):

Hotend Temp (°C):

Layer Height (mm):

Extrusion Width (mm):

Pressure Advance (PA): Leave empty for none

First Layer Fan Speed (%):

Fan Speed (%):

Print Speed (mm/s):

Travel Speed (mm/s):

Print Accel (mm/s^2):

Retraction Accel (mm/s^2):

Travel Accel (mm/s^2):

First Layer Speed (mm/s):

First Layer Print Accel (mm/s^2):

Z-Hop (mm): Vertical lift during travel moves (0 = disabled)

Flow Factor (mult): Multiply extrusion by this factor (default 1.00)

Retraction Test Settings

Retraction distance (min, mm):

Retraction distance (max, mm):

Retraction speed (min, mm/s):

Retraction speed (max, mm/s):

Distance Increment 0.2 mm | Speed Increment 19 mm/s | i Realistic max. Retraction Speed (w.o. Jerk) 0 mm/s

Advanced Settings

Distance Tests:

Speed Tests:

Lines per Cell:

Segment length (mm):

Travel length (mm):

Number of Layers:

Row Font Size (mm):

Speed Font Size (mm):

Text Print Speed (mm/s):

Custom G-Code

Start G-Code:

End G-Code:

Export Settings

Preset Name:

Material: