Mesh compensation problem

General Discussion
1

Basic Information:

Printer Model: ender 3 pro
MCU / Printerboard: btt skr mini v3
klippy.log

Fill out above information and in all cases attach your klippy.log file. Pasting your printer.cfg is not needed

Describe your issue:

My bed mes lokks very like mountains and the firs layer is looks like not compensatede like it must but i can see compensation in mainsail os. My setup of mesh is:
[bed_mesh]
speed: 50
horizontal_move_z: 7
mesh_min: 20, 20
mesh_max: 190, 218
probe_count: 20, 20
#round_probe_count: 5
fade_start: 1
fade_end: 10
fade_target: 0
#split_delta_z: .025
#move_check_distance: 5.0
#mesh_pps: 2,2
algorithm: bicubic
#bicubic_tension: .2
#relative_reference_index:

Mesh
Mesh1102×581 170 KB

IMG_20221024_151728
IMG_20221024_1517284000×1800 959 KB

2

400 points for such a small bed is quite an amount. :astonished:

Is the bead heated during the process?

3

Yes its heated to 60 degrees i use dual z direct extruder bed springs replaced with silocone. Bet calibrated with bed leveling screw.

4

Have you done a bed PID?
If the bed heats not properly (slow pulsing), the expansion can be quite significant.

5

It can be the v wheels if they have high spots/eccentric nuts aren’t tightened right. To not get frame errors into account and mess the mesh, i also recommend sticking to a 3x3 mesh, you really don’t need much more from my experience

6

Pid is calibrated. I try to see how my x axis is there problem with axis wheel.