Travel Speed

Parameter: travel_speed
Unit: mm/s
Default: 200 mm/s
Description: Speed when moving from one print location to another without extruding. Can be very fast since no material is being deposited.

Travel Speed by Printer Type

Printer Type	Typical Travel Speed	Maximum Safe
Bedslinger (Ender 3)	150-200 mm/s	250 mm/s
CoreXY (Voron)	300-400 mm/s	500+ mm/s
Bambu Lab	400-500 mm/s	500 mm/s
Delta	200-300 mm/s	400 mm/s

Z Travel Speed

Parameter: z_travel_speed
Unit: mm/s
Default: 12 mm/s
Description: Speed for Z-axis movements (layer changes, Z-hop). Usually limited by Z axis mechanics.

Why Travel Speed Matters

Print time: Faster travel significantly reduces total print time
Stringing: Fast travel with proper retraction reduces stringing
Oozing: Less time in transit means less oozing
Vibration: Very high speeds may cause ringing on nearby walls

Avoid Crossing Perimeters

Parameter: avoid_crossing_perimeters
Type: Boolean
Default: Disabled
Description: Try to keep travel moves within the print area to avoid leaving marks on outer surfaces.

Avoid Crossing Perimeters Max Detour

Parameter: avoid_crossing_perimeters_max_detour
Unit: mm or %
Description: Maximum additional travel distance allowed when avoiding perimeter crossings.

Travel Optimization Tips

Enable retraction: Always use retraction during travel moves
Z-hop: Use Z-hop to lift nozzle during travel, avoiding collisions
Combing: Keep travel within infill areas when possible
Acceleration: High travel speed needs high acceleration to be effective

Troubleshooting

Problem	Cause	Solution
Stringing	Slow travel	Increase travel speed
Blobs at travel end	Oozing during travel	Enable retraction, faster travel
Marks on surface	Nozzle dragging	Enable Z-hop during travel
Layer shifts	Travel too fast	Reduce travel speed, check belt tension
Ringing artifacts	High travel acceleration	Reduce travel acceleration

Pro Tip: Fast travel speeds are only effective with matching high acceleration. If your printer can't accelerate quickly, it will never reach the target travel speed on short moves.