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Process › Quality› Advancedonly_one_wall_first_layer

Only one wall on first layer

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

The first layer gets a single wall and the rest is solid infill. It's for bases with fine details, where a second wall would eat into the design.

How it works

On the first layer, walls are printed with wide lines (0.5 mm). If the base has letters, holes or thin shapes, two wall loops take up a millimeter and the detail disappears. With a single wall, the bottom surface pattern reaches further and the detail is kept.

It only affects the first layer; all the others keep their normal walls.

When to change it

  • A sign or a stamp with text on the face that touches the plate: turn it on.
  • A normal part, like a bracket or a box: leave it off; two walls give a firmer edge.

Typical values

ValueWhat for
OffDefaultdefault
OnOne wall on the first layer

Watch out for

  • With a single wall, the outline of the first layer is a bit weaker: on tall, narrow parts it may not stick to the plate as well.

Goes well with

What Bambu Studio says

Use only one wall on the first layer of model

Bambu Studio tooltip for this setting · AGPL-3.0

Read more at the official source