Infill direction
The angle of the infill lines relative to the bed. 45° spreads the strength evenly; 0° or 90° lines them up with the sides of the part.
How it works
Every infill pattern starts from a main direction, and this is its angle. The slicer rotates it on its own from layer to layer (for example, the rectilinear pattern alternates 45° and 135°), so this value sets the starting point, not an angle kept on every layer.
It also applies to the solid layers: the top surface, the bottom surface and the internal solid infill follow the same angle. External bridges don't: they have their own direction.
When to change it
- Almost never. 45° splits the strength between the two bed axes and doesn't favor either side.
- A ruler or a long, narrow strip that bends in one direction: lining the infill up with that direction (0° or 90°) makes it stiffer.
- A coaster or a name plate where you want the top-surface lines to run parallel to an edge for looks: use the angle that lines them up.
Typical values
| Value | What for |
|---|---|
| 45 | Default; balanceddefault |
| 0 | Parallel to the bed's X axis |
| 90 | Parallel to the Y axis |
Watch out for
- At 0° or 90° the top-surface lines run parallel to straight walls, and any unevenness shows more.
- Changing the direction doesn't change the amount of plastic or the print time; only the orientation.
Goes well with
What Bambu Studio saysits help card, quoted
What Bambu Studio says
Angle for sparse infill pattern, which controls the start or main direction of line
Bambu Studio tooltip for this setting · AGPL-3.0
Read more at the official source
In your profile0.20mm Standard @BBL A1 · 45°
In Bambu Studio, the profile 0.20mm Standard @BBL A1 sets it to45°
In other slicers
- Orca Slicer
- Sparse infill directionStrength › Infill
- PrusaSlicer
- Fill angleInfill › Advanced
- Cura
- Infill Line DirectionsInfillIt's a list of angles used in turn, layer by layer.
Names taken from each program's code (Orca Slicer 2.4.2, PrusaSlicer 2.9.6, Cura 5.13.0). Credits