Klipper: Bed mesh issues

[andremariz]

Wich one is better and whats the difference?

[aeropic]

Bed tilt just performs a rotation of a plane. It's good enough if your bed is flat.
Bed mesh computes a map of the bed distortion (which can come from a combination of several factors such as bed flatness and bent rods)...
==> I use bed mesh with success !

[andremariz]

Thank you, im glad i change to bed mesh then 😁. Still some tweeks to make. I had to change z min to - 1 becouse out of bounds erro. An becouse of this when it starts printing the nozzle is to close to the bed and i have to change it on z offset on the printer.
Whats your advice so i can fix this?

[aeropic]

My config is as follows :
[stepper_z]
step_pin: PB3
dir_pin: !PB2
enable_pin: !PA5
step_distance: .0025
endstop_pin: probe:z_virtual_endstop
position_min: -1
position_max: 240
homing_speed: 10

[probe]
pin: ^PC4
x_offset: -13
Y_offset: 22
z_offset: 2.30

[andremariz]

I guess they are similar.
What could i do for the nozzle being to low after bed mesh?
when the print starts i go to the printer menu and z_offset it by 0.400

[stepper_z]
step_pin: PB3
dir_pin: !PB2
enable_pin: !PA5
step_distance: .0025
endstop_pin: probe:z_virtual_endstop
position_min: -1
position_max: 250
homing_speed: 150

[probe]
pin: ^!PC4
x_offset: 44
y_offset: 12
z_offset: 1.0
speed: 2

[ghost]

Sorry for offtopic but I really think this is not an issue.
This is more suitable for a Klipper support group (like on facebook).
Putting this into the github issues section makes the issue section confusing.

[aeropic]

Just decrease the z offset value

[andremariz]

It is an issue as i stated before, when mesh bed level finishes and it starts printing the nozzle is scrsping the bed. On the other hand, i had to set z min to - 1 becouse i was having an out of bounds error. So, if you can help me figure this out fine, if this is not an issue for you cool, its for someone else. Maybe the title is not the best i give you that. At the time i wasnt having this issue.

[Arksine]

If the nozzle is touching the bed after calibration, then z_offset in the [probe] section is too large. You need to decrease it.

Also, it is normal to have to set position_min for the z axis to a negative value when using bed_mesh. If there are parts of your bed lower than the homed spot then bed_mesh will need to adjust z in the negative direction.

[andremariz]

Ok, i can print a line on the left side of the bed and then when it moves to the center to print the actual part its scrapin the bed! I can Z-offset in the printer menu but:

1- Why isn´t it compensating if it did the mesh leveling

2- why can´t i sabe the offset that i set in the printer menu?

[KevinOConnor]

If you are experience an issue then you'll need to attach the Klipper log file from the event - see: https://github.com/KevinOConnor/klipper/blob/master/docs/Contact.md