Cosmetic Issue

How to Fix Visible Layer Lines

Step-by-step fix for visible layer lines on Bambu Lab printers including X1C, H2D, P1S, and A1.

How do I fix visible layer lines?

1
Reduce layer height. Switch from 0.2mm to 0.12mm or even 0.08mm. Smaller layers blend together more and dramatically reduce visibility.
Setting: quality.layerHeight
2
Enable ironing (Quality > Ironing > Top surface only). The nozzle re-passes over top surfaces with minimal extrusion, creating a polished finish.
Setting: quality.ironing.type
3
Calibrate flow rate — over-extrusion creates uneven ridges between layers. Print a single-wall cube and measure wall thickness vs. expected.
Setting: Flow ratio

Pro tip: Select "High Print Resolution" above to automatically switch to finer layer heights and Arachne wall generator for smoother surfaces.

Related Print Issues

Uneven First Layer Stringing / Oozing Elephant Foot (First Layer Bulge)Warping / Curling / Lifting Visible Z-Seam

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Uneven First Layer Stringing / Oozing Elephant Foot (First Layer Bulge)Warping / Curling / Lifting Visible Z-Seam Rough / Droopy Overhangs Blobs / Zits on Surface Ghosting / Ringing Weak Layer Adhesion / Delamination Part Breaking Along Layer Lines Poor Dimensional Accuracy Part Too Flexible / Not Stiff Enough Bed Adhesion Failure / Part Detaching Support Removal Damage / Scars Infill Showing Through Walls Heat Creep / Clogging Mid-Print Thin Walls Breaking / Gaps in Thin Features Part Deforms in Heat / Sun Spaghetti / Print Detached Mid-Print Under-Extrusion (Sparse Lines / Missing Material)Over-Extrusion (Blobby / Too Much Material)Nozzle Clog (Blocked / No Extrusion)Extruder Clog (Filament Stuck in Gears)Filament Sticking to Nozzle (PETG)Bad Bridging Quality (Sag or Snap)Belt Pattern / VFA (Vertical Fine Artifacts)Gaps / Holes in Top Layer Different Gloss / Sheen on Different Areas Interlayer Cracking (ABS/ASA/PC/PA)Model Collapsing / Nozzle Hitting Print Wet / Damp Filament (Popping, Bubbles)Layer Shifting (Layers Offset Mid-Print)AMS Filament Tangled / Spool Stuck AMS Filament Ran Out Mid-Print AMS Cutter Stuck / Failed to Cut Filament Pile-Up in Waste Chute Build Plate Not Detected / Marker Missing Power Loss / Print Resume After Outage Hotend Fan Speed Abnormal / Stopped Homing Failed (X/Y/Z Axis)AMS Filament Change Failed / Purge Timeout Chamber Temperature Too High (PLA/PETG Softening)Print Paused — Door / Cover Open Printing CF Material with Wrong Nozzle CR Touch / BLTouch Leveling Failure Sprite Extruder Clicking / Grinding Filament X/Y Belt Tension Issues (Loose or Over-tight)Klipper Input Shaper / Pressure Advance Tuning Thermal Runaway Protection Triggered Bed Leveling Springs Losing Tension Creality Print / Slicer Compatibility Issues PTFE / Bowden Tube Wear or Gap IDEX Dual Extruder Calibration Offset Luban Connection / WiFi Transfer Issues Module Switching Problems (3D Print / CNC / Laser)Heated Bed Temperature Uniformity (Large Bed)