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Process › Quality› Precisionxy_hole_compensation

X-Y hole compensation

Makes every hole in the part bigger or smaller without touching the outer outline. It helps screws, pins and magnets fit.

How it works

Printed holes almost always come out a little smaller than designed: the plastic shrinks as it cools and the nozzle rounds off the curves on the inside. A 6.0 mm hole usually measures 5.8 or 5.9 mm.

This value moves the edge of each hole outward (positive) or inward (negative). Since it moves the edge all the way around, the diameter changes by twice the value: at 0.15 mm, a 6.0 mm hole becomes 6.3 mm.

It only affects holes that are closed within a layer. Side holes in a box, which leave the outline open on those layers, don't count as holes.

When to change it

  • An M3 screw that won't go into its hole, a pin that's too tight or a magnet you have to force: raise it in steps of 0.05 mm.
  • To get it right the first time: print a test strip with several diameters and see which one fits.
  • You switched filament: calibrate again, because the result depends on each material.

Typical values

ValueWhat for
0No correction (default)default
0.1Typical correction for PLA
0.15Screws that must slide through without cutting a thread
0.3Only if the test calls for it

Watch out for

  • Before compensating, rule out other causes: wet filament, too much plastic (badly calibrated flow), elephant foot on the first layer, or the seam sitting inside the hole.
  • Holes smaller than 1 mm are hard to correct this way.
  • If the model has side openings, there's no “hole” on those layers and this value does nothing; use “X-Y contour compensation”.

Goes well with

X-Y contour compensationElephant foot compensationSeam positionAuto circle contour-hole compensation
What Bambu Studio saysits help card, quoted

What Bambu Studio says

Holes of object will be grown or shrunk in XY plane by the configured value. Positive value makes holes bigger. Negative value makes holes smaller. This function is used to adjust size slightly when the object has assembling issue

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 · 0 mm

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

Helps with

Parts don't fit or holes come out small

In other slicers

Orca Slicer
X-Y hole compensationQuality › Precision
PrusaSlicer
No clear equivalent.
Cura
Hole Horizontal ExpansionWalls

Names taken from each program's code (Orca Slicer 2.4.2, PrusaSlicer 2.9.6, Cura 5.13.0). Credits