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Perimeter transition distance

Over the last millimeters of a wall slowed to cool, the speed eases back to normal before moving on to the outer wall.

How it works

With “Consistent surface”, inner walls slow down and the outer one doesn't. The jump from one to the other can leave a mark; this distance makes the speed rise gradually at the end of the slowed section.

When to change it

  • Recommended: 5–10 mm.
  • 0 turns the transition off.

Typical values

ValueWhat for
10 mmDefaultdefault
5–10 mmRecommended

Watch out for

  • Only used with the “Consistent surface” logic.
  • Only shown with Develop mode turned on in Preferences.

Goes well with

What Bambu Studio saysits help card, quoted

What Bambu Studio says

Distance in millimeters before the end of slowed perimeters where the original print speed is gradually restored. This reduces quality issues when transitioning from slowed features to fast external perimeter printing. Only applies when 'Consistent surface' cooling logic is selected. Recommended value: 5-10mm. Set to 0 to disable.

Bambu Studio tooltip for this setting · AGPL-3.0

Read more at the official source

In your profileBambu PLA Basic @BBL A1 · 10 mm

In Bambu Studio, the profile Bambu PLA Basic @BBL A1 sets it to10 mm

In other slicers

Orca Slicer
No clear equivalent.
PrusaSlicer
Perimeter transition distanceCooling › Enable
Cura
No clear equivalent.

Names taken from each program's code (Orca Slicer 2.4.2, PrusaSlicer 2.9.6, Cura 5.13.0). Credits