Notifications
Clear all

Prusa Mini+ failing Z-Axis Calibration  

  RSS
Win J.
(@win-j)
Member
Prusa Mini+ failing Z-Axis Calibration

Alright, my Prusa Mini Revo hot end ate itself requiring a total rebuild of the hot end.  Completed the rebuild today and decided I wanted to re-run the calibration and it's failing the Z-Calibration.   at completion of the calibration the display states Z 185.  I believe that's the correct build volume. I'm on Firmware 6.2.4.  For mods I have the aforementioned Revo Hotend, and I have the Bondtech IFS Extruder.  I've had the machine since 2020.  It's a good little workhorse.  Z Offset is -0.9.  

 

Ideas?

Best Answer by ssmith:

It's been a while since I did the Revo mod to my mini, but I remember that it changed the travel of the z axis, extending it a bit. I changed the z-axis length to 195 in the settings/hardware/experimental menu.

Opublikowany : 15/09/2025 5:50 pm
ssmith
(@ssmith)
Estimable Member
RE: Prusa Mini+ failing Z-Axis Calibration

It's been a while since I did the Revo mod to my mini, but I remember that it changed the travel of the z axis, extending it a bit. I changed the z-axis length to 195 in the settings/hardware/experimental menu.

Opublikowany : 16/09/2025 5:06 pm
Win J.
(@win-j)
Member
Topic starter answered:
RE: Prusa Mini+ failing Z-Axis Calibration

I ran the calibration again with logging on and it spat out the following in the log.txt file:

107.175s [ERROR - Selftest:10] Z-Axis measured length = 192.175003mm out of range <181.000000,191.000000>

So, I'm reading that 191 is the upper limit.  I updated to 193 and the test passed.

Opublikowany : 16/09/2025 10:13 pm
Win J.
(@win-j)
Member
Topic starter answered:
RE: Prusa Mini+ failing Z-Axis Calibration

Thank you!

Opublikowany : 16/09/2025 10:16 pm
Share: