Unlevel or warped bed
22 usi3d guides for “Unlevel or warped bed”, each with the likely causes, how to check which one is yours and the step-by-step fix, with each manufacturer's official sources.
2 apply to any FDM printer and 20 are for Anycubic, Bambu Lab, Creality, Elegoo, Flashforge, Prusa, Qidi, Raise3D, RatRig, Snapmaker, Sovol and Voron printers.
Each guide summarises the official documentation and says whether usi3d has already verified it on a machine.
Any FDM printer (2 guides)
- Uneven first layer: squished in some areas and gappy in others
The first layer isn't the same across the bed: in some areas the lines are squished, almost see-through or ridged, and in others they are round, separated or not…
- Unlevel or warped bed: uneven first layer even with a bed mesh
The first layer is squished in one area and too high or not sticking in another, or one side is very close and the other too far.
Anycubic (2 guides)
- Kobra 2: auto-leveling fails with a module or abnormal leveling warning
During auto-leveling on the Kobra 2, Kobra 2 Pro or Kobra 2 Max, the printer stops with a warning such as «Leveling is abnormal,please check whether the wiring of the…
- Kobra S1 or Kobra 3: errors 10237 (auto levelling), 10108 (nozzle scraping the bed) or 10130 (Z homing)
The Kobra S1 or Kobra 3 stops with «CODE: 10237 Auto leveling error.
Bambu Lab (2 guides)
- A1 and A1 mini: Z homing or bed levelling fails (hotend eddy current sensor)
The A1 or A1 mini reports «Z homing failed» or levelling fails: the toolhead comes down a little and stops without touching the bed, drops quickly and goes back up, taps…
- X1 and P1: homing or bed levelling fails (Z homing failed, plate not placed properly, force sensors)
While preparing a print, the X1 or P1 stops with «Z-axis homing failed» or with alerts such as 0300-0D00-0002-0001 (bulge on the plate or dirty nozzle)…
Creality (4 guides)
- Ender 3 S1 Pro or Ender 5 S1: first layer too high or scraping after levelling (CR Touch and Z offset)
After automatic levelling, the first layer does not stick because the nozzle is too high, or it scrapes the plate because it is too low; sometimes one corner differs…
- Ender 3 V3 SE or KE: leveling fails, CR Touch error or the nozzle scratches the bed
On the Ender 3 V3 SE or KE automatic leveling stops with an error (leveling failure, CR Touch error or height measurement failure), the nozzle keeps probing the lower…
- Ender 3 V3 SE: the Z axis does not move when homing, the gantry is crooked or the nozzle height is wrong
On the Ender 3 V3 SE, when you press «Home» the Z axis does not move up or down, the gantry leans backwards (towards the Z motor side) or, after the height measurement…
- The K1 levels badly: the nozzle scrapes the bed in some areas and the layer is too high in others
On the K1, K1C or K1 Max the first layer is not the same across the plate: in some areas the nozzle scrapes the surface and in others the line is too high or does not…
Elegoo (4 guides)
- Centauri Carbon 2: leveling fails with error 704 or 605 (bed pressure sensors)
During auto leveling, the Centauri Carbon 2 stops with error 704 («Leveling failed») or 605 (pressure sensor data error); sometimes the nozzle probes the same spot again…
- Centauri Carbon: leveling error 502 (leveling sensor data collection error)
During automatic leveling on the Centauri Carbon, the nozzle probes the same spot again and again or keeps pressing down on the plate, and the screen shows code 502…
- Neptune 3 Pro: levelling does not work, the first layer is uneven or the nozzle keeps going down
On the Neptune 3 Pro (and the rest of the Neptune 3 series) the first layer is uneven or does not stick even after levelling, or when homing Z the nozzle keeps going…
- Neptune 4: first layer too far or squashed after leveling, or the print head does not stop going down
On the Neptune 4 or 4 Pro, after automatic leveling the nozzle is too close to or too far from the bed and the first layer comes out wrong; you have to level every time…
Flashforge (1 guide)
- Adventurer 5M or AD5X: nothing comes out on the first layer, the nozzle scratches the plate or the part will not stick
No filament comes out on the first layer because the nozzle is too close, the nozzle scratches the plate after automatic levelling, the part does not stick, or after…
Prusa (1 guide)
- First layer too high, too squished or uneven on MK4, MK4S or CORE One (load cell)
On an MK4, MK4S or CORE One, which calibrate the first layer by themselves with the load cell in the print head, the first layer comes out too high (round lines with…
Qidi (1 guide)
- QIDI Q1 Pro: errors «Probe samples exceed samples_tolerance», «ADC out of range» or «MCU MKS_THR»
The Q1 Pro stops and shows a Klipper message on screen such as «!!Probe samples exceed samples_tolerance, probe failed» when levelling, «Mcu mcu shutdown: Thermocouple…
Raise3D (1 guide)
- E2: in duplication or mirror mode one head does not stick or scrapes, or the two heads are not aligned
On a Raise3D E2 (IDEX), when printing in Duplication or Mirror mode one of the two parts does not stick or its nozzle scrapes the bed; or in two-material prints the…
RatRig (1 guide)
- V-Core: the bed mesh looks tilted or twisted and the first layer is uneven
On a Rat Rig V-Core, the bed mesh shown in Mainsail looks tilted or twisted instead of flat, and the first layer is squished more in some areas than in others or does…
Snapmaker (1 guide)
- J1/J1s: the two print heads do not line up or bed calibration fails
On a Snapmaker J1 or J1s, the layers of the two materials are shifted relative to each other, or calibration fails: the bed keeps rising and the nozzle presses into it…
Sovol (1 guide)
- SV08: the Z probe fails or the bed mesh is very uneven («probe triggered prior to movement», «No trigger on z…»)
On the SV08 the print head hits the bed or does not stop when going down; QGL (gantry leveling) or homing stops with messages such as «probe triggered prior to…
Voron (1 guide)
- Voron 2.4 and Trident: QUAD_GANTRY_LEVEL or Z_TILT_ADJUST fails or does not converge
When levelling the gantry of a 2.4 (QUAD_GANTRY_LEVEL, QGL) or the bed of a Trident (Z_TILT_ADJUST), the process stops with an «out of bounds» error, fails because the…
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