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Process › Speed› Other layers speedgap_infill_speed

Gap infill speed

How fast the little bits of line that fill gaps between walls are printed. They're short stretches of uneven width: lowering it cleans up thin areas.

How it works

When the space left between two walls can't fit another loop, the slicer fills it with bits of line that zigzag. They're short and vary in width, so the amount of plastic coming out changes constantly. At 250 mm/s (the factory value) the printer barely gets up to speed on each one, and in practice they go slower.

When to change it

  • The usual choice: leave it at 250 mm/s.
  • A sign with thin lettering or a raised logo whose narrow areas come out with bumps or strings: lower it to 100 mm/s.

Typical values

ValueWhat for
100Cleaner thin areas
250Defaultdefault

Watch out for

  • With “Wall generator” set to “Arachne” there are far fewer gaps to fill and this speed matters less.

Goes well with

Wall generatorFilter out tiny gapsDetect thin wall
What Bambu Studio saysits help card, quoted

What Bambu Studio says

Speed of gap infill. Gap usually has irregular line width and should be printed more slowly

Bambu Studio tooltip for this setting · AGPL-3.0

Read more at the official source

Bambu Lab wiki (index)
In your profile0.20mm Standard @BBL A1 · 250 mm/s · changes with the profile

In Bambu Studio, the profile 0.20mm Standard @BBL A1 sets it to250 mm/s

It changes with the Bambu Lab A1 factory profile:0.08mm Extra Fine350 mm/s0.08mm High Quality210 mm/s0.12mm Fine350 mm/s0.12mm High Quality230 mm/s0.16mm High Quality250 mm/s0.16mm Optimal300 mm/s0.20mm Standard250 mm/s0.20mm Strength250 mm/s0.24mm Draft230 mm/s0.28mm Extra Draft200 mm/sWhy does it change?

In other slicers

Orca Slicer
Gap infillSpeed › Other layers speed
PrusaSlicer
Gap fillSpeed › Speed for print moves
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