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Filament › Filament› Volumetric speed limitationfilament_adaptive_volumetric_speed

Adaptive volumetric speed

With this on, the plastic-per-second cap adapts to each line by its width and the layer height, never exceeding the maximum.

How it works

Without this option, every line uses the same cap: the “Max volumetric speed”. With it on, the program also works out a cap for each line from its width and the layer height, using a curve Bambu measured for that filament, and uses the lower of the two.

When to change it

  • PLA Basic: off.
  • It only has an effect if the profile includes that measured curve; in the tab it's grayed out when it doesn't.

Typical values

ValueWhat for
OffPLA Basicdefault

Watch out for

  • It doesn't replace the volumetric speed test: the maximum still rules.

Goes well with

Max volumetric speed
What Bambu Studio saysits help card, quoted

What Bambu Studio says

When enabled, the extrusion flow is limited by the smaller of the fitted value (calculated from line width and layer height) and the user-defined maximum flow. When disabled, only the user-defined maximum flow is applied.

Bambu Studio tooltip for this setting · AGPL-3.0

Read more at the official source

Bambu Lab wiki (index)
In your profileBambu PLA Basic @BBL A1 · No

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

In other slicers

Orca Slicer
Adaptive volumetric speedFilament › Volumetric speed limitationOrca marks it as an experimental, incomplete feature brought over from Bambu.
PrusaSlicer
No clear equivalent.
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