please help me blv setting

[A Former User]

@sgk
do you know why the time of each layer is not the same while the cube is the same everywhere

[A Former User]

@sgk this is my cube

[martin7404]

@sgk If you are sure Your bed is level and there is no wobble in the Z axis
then it is extrusion calibration and temperatures

[A Former User]

@martin7404
I do before each print g29

[martin7404]

@sgk ok can you share your bed graph

[martin7404]

@sgk p.s speed, accel , jerk ?

[A Former User]

@martin7404
I can't find where the graphics are

[martin7404]

@sgk On DWC heightmap

[A Former User]

@martin7404 RepRapFirmware height map file v2 generated at 2021-12-17 13:36, min error -0.140, max error 0.223, mean 0.055, deviation 0.129
axis0,axis1,min0,max0,min1,max1,radius,spacing0,spacing1,num0,num1
X,Y,20.00,270.00,20.00,270.00,-1.00,240.00,240.00,2,2
0.076, 0.223
0.062, -0.140

[A Former User]

@sgk

[martin7404]

@sgk it is ok, but I will suggest you do at least 16 points map

[A Former User]

@martin7404 ok 16

[A Former User]

@martin7404 how do you manage to put in 16?

[A Former User]

@sgk ; bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool on Tue Oct 09 2018 13:27:56 GMT+0300
M291 P"Probing mesh grid process started" R"Probing.." S1 T2
M561 ; clear any bed transform
G28 ; home all axis bb
M671 X-30.0:364.0 Y175.0:175.0 S5.0 ;bed compensation
G30 P1 X5 Y150 Z-99999
G30 P0 X300 Y150 Z-99999 S2
G90 ; absolute positioning bb
M557 X20:270 Y20:270 S240 ; Define mesh grid
G29 S0 ; Probe the bed and save height map to file
M374 ; Save calibration data. Default is sys/heightmap.csv
M291 P"Probing mesh grid process finished !" R"Probing.." S1 T2
; Probe the bed at 4 points
;G30 P0 X10 Y10 H0 Z-99999

[A Former User]

This post is deleted!

[A Former User]

This post is deleted!

[A Former User]

@sgk Hey friends after changing the thermistor probe for a Semitec 104GT-2 the lines are now straight horizontally but the vertical lines are shifted and lack of filament as we see in the photos? Any ideas folks?

[engikeneer]

@sgk to me, that looks like either z banding or a bed that doesn't have great PID control (so the bed temperatures fluctuate through the print).

If it is z banding, I.e. some issue with the z axis motion, things to look for would be:

• is there room for the ball screw to float a bit in case there is any misalignment?
• are the ball screws straight?
• do they wobble at all as the z axis moves?
• are the z guides giving the bed enough support (I.e. can the bed move in x and y at all)

For the PID issue, watch your bed temp during a print - it should be pretty stable. Also double check you are using it in PID mode, not bang bang

[A Former User]

@engikeneer
hello thank you very much for your help. This has to say that I am an average novice there are things that I do not understand, excuse me
but how do I know and how can I verify all this?I put a new thermistor for the hotend I must also do for the bed?

the z rods are mounted on sfu1204 I imagine they are straight.
i have this the z

[A Former User]

@sgk i have this for z

https://youtube.com/shorts/-nA3WhPwsdA?feature=share