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Z axis movement problem


New member
Printer Model
Voron 2.4
Hello, I am building my first voron 2.4
I'm having a problem with the z axis: I do the home xyz, in x and y it works perfectly now in z when I tell it to go up 10mm it goes up 20mm when I tell it to go up 50mm it goes up 105mm and if I tell it to go up 75mm it goes up almost 200mm
There are 4 equal 1.8º motors with 16 gears connected to an 80 gear, the typical design of the z axis. I use the recommended values:
rotation_distance: 40
full_steps_per_rotation: 200
gear_ratio: 80:16

I tried changing the rotation_distance but it doesn't give me conclusive results.

Would anyone have any idea where to address the problem?