Trouble to find the Z axis home position for every print
 
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James He
(@james-he)
Member
Trouble to find the Z axis home position for every print

It always struggles at beginning of the print.

Try to find the z axis home position and keeps trying.

the bed moves up and down and seems got lost.

 

I have to try few times before it can continue to finish the real print job.

even I observed that the bed touches nozzle few times and it got lost after and keep moving the bed up and down until fails.

 

I have firmware version 6.3.2+10364

 

Thanks,

James

Napsal : 24/04/2025 9:24 pm
goldrake
(@goldrake)
Active Member
RE: Trouble to find the Z axis home position for every print

Hi, I have the same problem as you, did you manage to find a solution?

Napsal : 05/05/2025 10:45 pm
Brian
(@brian-12)
Prominent Member
RE: Trouble to find the Z axis home position for every print

Have you tried lubricating the lead screws?

Napsal : 05/05/2025 10:50 pm
James He
(@james-he)
Member
Topic starter answered:
RE: Trouble to find the Z axis home position for every print

Not yet,

My guess now is that I may have a bad loadcell.

Napsal : 05/05/2025 10:54 pm
goldrake
(@goldrake)
Active Member
RE: Trouble to find the Z axis home position for every print

I'll try right away,

Napsal : 05/05/2025 11:00 pm
goldrake
(@goldrake)
Active Member
RE: Trouble to find the Z axis home position for every print

nothing to do, I have already replaced the load cell with the one from the mk4, then I replaced the loveboard with the one from the mk4 but the result is always the same.

Napsal : 05/05/2025 11:12 pm
James He
(@james-he)
Member
Topic starter answered:
RE: Trouble to find the Z axis home position for every print

It must be a firmware bug.

I observed few times that the bed is in the middle, and moving up and down try to find the nozzle.

Does Core One has stop switch on z axis to get home position right on first try?

My 10 years old 3D printer can do it on first try. I can't believe this expansive model can not do the simple thing right.

Napsal : 05/05/2025 11:47 pm
goldrake
(@goldrake)
Active Member
RE:

It seems that the problem has been solved in my case by replacing this in the G code start.

M109 R{((filament_notes[0]=~/.*HT_MBL10.*/) ? (first_layer_temperature[0] - 10) : (filament_type[0] == "PC" or filament_type[0] == "PA") ? (first_layer_temperature[0] - 25) : (filament_type[0] == "FLEX") ? 210 : 170)} ; wait for temp

 

With

 

M104 S100

 

let me know if it solves for you too 

This post was modified před 4 hours by goldrake
Napsal : 06/05/2025 1:39 pm
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