Skeleton infill density
With the “Locked Zag” pattern: how much plastic goes into the skeleton, the central zone of the infill. It can almost always be lighter than the skin.
How it works
The skeleton supports the layers above and adds some overall stiffness, but it doesn't touch the walls. Lowering it saves plastic and time with almost no loss of strength, as long as the skin is strong enough.
When to change it
- A large planter or a storage box with a reinforced skin: lower it to 5–10%.
- A stool or a door stop that gets squashed under weight: raise it to 30%.
- The usual: same as the infill.
Typical values
| Value | What for |
|---|---|
| 15% | Defaultdefault |
| 8% | Light skeleton |
| 30% | Parts that get squashed |
Watch out for
- With a very low skeleton, the top needs more solid layers so it doesn't sag.
- It only shows up with the “Locked Zag” infill pattern.
Goes well with
What Bambu Studio saysits help card, quoted
What Bambu Studio says
The remaining part of the model contour after removing a certain depth from the surface is called the skeleton. This parameter is used to adjust the density of this section.When two regions have the same sparse infill settings but different skeleton densities, their skeleton areas will develop overlapping sections.default is as same as infill density.
Bambu Studio tooltip for this setting · AGPL-3.0
Read more at the official source
In your profile0.20mm Standard @BBL A1 · 15% · changes with the profile
In Bambu Studio, the profile 0.20mm Standard @BBL A1 sets it to15%
In other slicers
- Orca Slicer
- Skeleton infill densityStrength › Infill
- 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