Failed Z axis calibration after mk4s -> Core One upgrade
 
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Failed Z axis calibration after mk4s -> Core One upgrade  

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jhawk28
(@jhawk28)
Member
Failed Z axis calibration after mk4s -> Core One upgrade

What sort of things should I look into for troubleshooting why the Z axis fails calibration? It seems to make a grinding sound. It is able to move the bed up to the top.

Posted : 05/07/2025 10:55 pm
Tinker
(@tinker)
Member
RE: Failed Z axis calibration after mk4s -> Core One upgrade

Check if the nozzle is actually hitting the build plate. I had to lower the nozzle a bit to pass the Z axis calibration. 

Posted : 07/07/2025 9:10 am
jhawk28
(@jhawk28)
Member
Topic starter answered:
RE: Failed Z axis calibration after mk4s -> Core One upgrade

Yes, that was the problem.

Posted : 11/07/2025 1:18 am
Lance Luther
(@lance-luther)
Active Member
RE: Failed Z axis calibration after mk4s -> Core One upgrade

Going to piggyback on here as I am having the same issues and tried to lower the nozzle but no luck. I have tried adjusting the trapezoidal nuts and even have a level to check the true of the bed and everything looks good but just will not pass. Any ideas on what else it could be? 

 

Posted : 19/07/2025 11:55 pm
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