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Process › Support› Support ironingsupport_ironing_spacing

Support ironing line spacing

The distance between ironing passes over the support interface. Closer together is smoother and slower; if they're spaced wider than the nozzle covers, strips are left unironed.

Not always visible. In Bambu Studio this setting only shows up when “Enable ironing support interface” is on. See Enable ironing support interface.

How it works

The nozzle tip irons a strip about 0.4 mm wide on each pass. With 0.15 mm between passes, every spot gets two or three and the surface comes out even; at 0.4 mm or more, each area is ironed only once and the striping shows.

It's the same as the top surface “Ironing line spacing”, applied to the top face of the support.

When to change it

  • Most parts: the default 0.15 mm.
  • A large interface where time matters more than finish (under a cosplay helmet): 0.25–0.30 mm.

Typical values

ValueWhat for
0.15 mmDefaultdefault
0.10 mmSmoothest, lots of time
0.30 mmFast

Watch out for

  • It only shows up with support interface ironing turned on.
  • Don't confuse it with “Top interface spacing”, which is the gap between the lines of the interface itself (it has to be 0 for ironing to work).

Goes well with

What Bambu Studio saysits help card, quoted

What Bambu Studio says

The distance between the lines of ironing

Bambu Studio tooltip for this setting · AGPL-3.0

Read more at the official source

In your profile0.20mm Standard @BBL A1 · 0.15 mm

In Bambu Studio, the profile 0.20mm Standard @BBL A1 sets it to0.15 mm

In other slicers

Orca Slicer
Support Ironing line spacingSupport › Support ironing
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