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Process › Others› Prime towerprime_tower_rib_width

Rib width

How thick the prime tower's four ribs are. Wider, they brace it more, but leave less contact between the wall and the infill.

Not always visible. In Bambu Studio this setting only shows up when “Enable” is on and “Rib wall” is on. See Enable, Rib wall.

How it works

Each rib is a diagonal stretch of wall at a corner. Its width adds stiffness, but the wider it is, the less contact there is between the outer wall and the inner infill, which is what holds the tower together.

The slicer keeps it under half the length of the tower's side.

When to change it

  • For almost anything: 8 mm, the default.
  • A tall multicolor figure whose tower shakes: 10–12 mm.
  • A small tower, like the one for a two-color keychain: 5–6 mm.

Typical values

ValueWhat for
8 mmDefaultdefault
10–12 mmStiffer
5–6 mmSmall towers

Watch out for

  • It only exists with “Rib wall” turned on.

Goes well with

Rib wallExtra rib length
What Bambu Studio saysits help card, quoted

What Bambu Studio says

Rib width is always less than half the prime tower side length.

Bambu Studio tooltip for this setting · AGPL-3.0

Read more at the official source

This setting on the Bambu Lab wiki
In your profile0.20mm Standard @BBL A1 · 8 mm

In Bambu Studio, the profile 0.20mm Standard @BBL A1 sets it to8 mm

In other slicers

Orca Slicer
Rib widthMultimaterial › Prime tower
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