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Process › Strength› Advanceddetect_narrow_internal_solid_infill

Detect narrow internal solid infill

In very narrow solid areas, instead of short lines going back and forth, it prints rings that follow the outline. Faster and cleaner.

How it works

Regular internal solid infill runs in parallel lines. In a narrow strip that turns into dozens of two-millimeter lines with a turn at each end: slow, with lots of starts and stops. With this option the slicer spots those strips and fills them by following their outline, with rings that go around them in one pass.

It only affects internal solid infill, the part you can't see. It comes turned on from the factory.

When to change it

  • Almost always: leave it on. On parts with narrow solid strips, like a picture frame or the arms of a bracket, it saves time without showing on the outside.
  • Turn it off only if, on a specific part, the rings leave a tiny gap in the middle of the strip and you'd rather have lines.

Typical values

ValueWhat for
YesDefault; rings in narrow areasdefault
NoAlways parallel lines

Watch out for

  • It changes nothing on visible surfaces; if you see rings on a top surface, that's decided by “Top surface pattern”, not this option.

Goes well with

What Bambu Studio saysits help card, quoted

What Bambu Studio says

This option will auto detect narrow internal solid infill area. If enabled, concentric pattern will be used for the area to speed printing up. Otherwise, rectilinear pattern is used defaultly.

Bambu Studio tooltip for this setting · AGPL-3.0

Read more at the official source

In your profile0.20mm Standard @BBL A1 · Yes

In Bambu Studio, the profile 0.20mm Standard @BBL A1 sets it toYes

In other slicers

Orca Slicer
Detect narrow internal solid infillsStrength › Advanced
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