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Elegoo · Resin (SLA/MSLA) 3D Printers
Z-Axis Layer Inconsistency Detected
Quick Answer
Error code LAYER_SHIFT on your Elegoo Resin (SLA/MSLA) 3D Printers means: Z-Axis Layer Inconsistency Detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Jupiter SEMars 4Mars 4 UltraSaturn 3Saturn 3 UltraSaturn 4 Ultra
Likely Causes
  1. Z lead screw has accumulated cured resin particles causing inconsistent Z movement
  2. Z motor coupler set screws have loosened allowing slippage between the motor shaft and lead screw
  3. Lead screw nut is worn creating backlash in the Z movement
  4. Excessive FEP suction force causing the build plate to flex during peel
How to Fix It
1
Clean the Z lead screw thoroughly with isopropyl alcohol to remove all cured resin particles
2
Apply a thin coat of PTFE dry lubricant to the lead screw after cleaning
3
Check the Z motor coupler set screws and tighten if loose
4
Inspect the lead screw nut for wear by checking for play when the build plate is gently rocked side to side
5
Reduce the lift speed in the slicer settings to decrease peel force and reduce Z-axis stress
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Replacement Z lead screw nut (anti-backlash if available)
PTFE dry lubricant
Z motor coupler with set screws
FEP release spray
Related Error Codes
UV_LED_FAILURESCREEN_DEAD_PIXELZ_AXIS_HOME_FAILZ_MOTOR_ERRORUSB_READ_ERROR
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