The G29 Mesh does not load well



  • Good afternoon,

    I have a core XY (Voron 2.1) with a bed of 350x350 mm, and when I print before, I make a G29, but it seems that it does not carry the mesh well, because the nozzle does not stick well throughout the bed. Photo command I am using an original BlTouch.

    The first thing I do is a Macro to start printing.

    I send the files, let's see if there is something wrong.

    The M566 (Which has nothing to do with the error, is it correct, for a good operation or E, should it be faster?)

    Thank you very much in advance.

    CONFIG.G

    ; Configuration file for Duet WiFi (firmware version 1.21)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool v2 on Sun Mar 10 2019 17:30:42 GMT+0100 (hora estándar de Europa central)

    ; General preferences
    G90 ; Send absolute coordinates...
    M83 ; ...but relative extruder moves

    M667 S1 ; Select CoreXY mode
    M555 P2 ; Set firmware compatibility to look like Marlin

    ; Network
    M550 P"Margarita" ; Set machine name
    M552 S1 ; Enable network
    M587 S"i" P"mi***" ; Configure access point. You can delete this line once connected
    M586 P0 S1 ; Enable HTTP
    M586 P1 S0 ; Disable FTP
    M586 P2 S0 ; Disable Telnet

    ; Drives
    M584 X0 Y1 Z5:6:7:8 E3:4:2 ; motor bindings
    M671 X400:400:-50:-50 Y355:-85:-85:355 S5 ; Z drive positions

    M569 P0 S1 ; X motor direction
    M569 P1 S1 ; Y motor direction
    M569 P5 S0 ; Z-- motor direction
    M569 P6 S1 ; Z-+ motor direction
    M569 P7 S0 ; Z++ motor direction
    M569 P8 S1 ; Z+- motor direction
    M569 P3 S1 ; E0 motor direction
    ;M569 P4 S1 ; E1 motor direction
    ;M569 P2 S1 ; E2 motor direction

    M350 X256 Y256 Z256 I0 ; Configure microstepping without interpolation
    M350 E16 I0 ; Configure microstepping with interpolation
    M92 X1280.00 Y1280.00 Z6400.00 E549.00 ; Set steps per mm
    M566 X900.00 Y900.00 Z150.00 E120.00 ; Set maximum instantaneous speed changes (mm/min)
    M203 X24000.00 Y24000.00 Z1800.00 E6000.00 ; Set maximum speeds (mm/min)
    M201 X3600.00 Y3600.00 Z500.00 E3600.00 ; Set accelerations (mm/s^2)
    M906 X900.00 Y900.00 Z900.00 E900.00 I30 ; Set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout

    ; Axis Limits

    M208 X0 Y0 Z0 S1 ; Set axis minima
    M208 X350 Y350 Z350 S0 ; Set axis maxima

    ; Endstops
    ;M574 X1 Y1 Z1 S0 ; Set active low and disabled endstops
    M574 X1 Y1 S0
    ;M574 Z1 S0 ; Set active low and disabled endstops

    M98 P"/macros/Zprobe BlTouch"

    ; Heaters
    M305 P0 T100000 B3950 R4700 ; Set thermistor + ADC parameters for heater 0
    M143 H0 S150 ; Set temperature limit for heater 0 to 120C
    M305 P1 T100000 B4725 C7.060000e-8 R4700
    M143 H1 S280 ; Set temperature limit for heater 1 to 280C

    ; Fans
    M106 P2 C"CAPA" ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P1 T45 H1 C"HOTEND" ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on

    ; Tools
    M563 P0 D0 H1 F2 ; Define tool 0
    G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
    G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C

    ; Automatic power saving
    M911 S22 R23 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; Set voltage thresholds and actions to run on power loss

    ;Registro de eventos
    M929 P"registro.txt" S1 ; iniciar el registro en el archivo eventlog.txt

    ; Calibracion de la Temperatura

    M912 P0 S-10

    M572 D0 S0.15

    ; Automatic saving after power loss is not enabled

    M501

    ; Custom settings are not configured

    MACRO BLTOUCH:

    ; Z-Probe con BLTouch
    M98 P"/macros/Activar EndStop"
    M574 Z1 S2 ; Set endstops controlled by probe
    M307 H7 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch
    M558 P9 F400 H5 R0.2 T6000 A5 S0.03 ;B1 ; Set Z probe type to bltouch and the dive height + speeds
    G31 P25 X0 Y-26.30 Z1.40 ; Set Z probe trigger value, offset and trigger height
    M557 X50:300 Y50:300 S20 ; Define mesh grid

    MACRO INICIAR IMPRESION:

    ;M98 P"/macros/Iniciar Impresion" ; Cargar Parametros de la malla

    M561
    G29 S2
    M280 P7 S160; Liberación de alarma BLTouch
    G4 P100; retraso para BLTouch
    M98 P"/sys/homeall.g"
    G1 X175 Y175 F12000
    G30
    G32
    G1 X175 Y175 F12000
    G30
    G1 Z10 F36000
    G29

    photo_2019-09-17_19-32-14.jpg

    Thank you.


  • Moderator

    @juanmena said in The G29 Mesh does not load well:

    M561
    G29 S2
    M280 P7 S160; Liberación de alarma BLTouch
    G4 P100; retraso para BLTouch
    M98 P"/sys/homeall.g"
    G1 X175 Y175 F12000
    G30
    G32
    G1 X175 Y175 F12000
    G30
    G1 Z10 F36000
    G29

    This is really confusing.

    You're loading a saved mesh, but then later you're doing another probe routine.
    You're doing a homeall and then a G32, and then another G30.
    What is in your homeall.g? What is in bed.g?


  • Moderator

    @juanmena said in The G29 Mesh does not load well:

    M558 P9 F400

    The dive speed of the probing is quite fast. The BLTouch works best with a slower probe speed for best repeatability. Try F120.



  • bed.g

    ; bed.g
    ; called to perform automatic bed compensation via G32
    ;
    ; generated by RepRapFirmware Configuration Tool v2 on Tue Apr 23 2019 16:30:59 GMT+0200 (hora de verano de Europa central)

    M561 ; clear any bed transform

    M401

    G30 P0 X25 Y35 H0 Z-99999
    G30 P1 X25 Y310 H0 Z-99999
    G30 P2 X325 Y310 H0 Z-99999
    G30 P3 X325 Y35 H0 Z-99999 S4

    G30 P0 X25 Y35 H0 Z-99999
    G30 P1 X25 Y310 H0 Z-99999
    G30 P2 X325 Y310 H0 Z-99999
    G30 P3 X325 Y35 H0 Z-99999 S4

    ; Homez.g

    M98 P"0:/macros/Zprobe BlTouch"

    G91
    G1 Z10 F6000 S2 ; lift Z relative to current position
    G90
    G1 X175 Y175 F12000 ;Posiciona en el centro
    M280 P7 S10
    G30 ; Do a single probe to home our Z axis
    G90 ; Make sure we are in absolute mode
    G1 Z10 F6000 ; Rapidly move the Z axis to Z=10.



  • This post is deleted!

  • Moderator

    @juanmena said in The G29 Mesh does not load well:

    M280 P7 S10

    You don't need to manually control the BLTouch pin. It will deploy as needed. So you can remove those M280 commands from your files.

    The bed.g you have configured is using the old plane for of bed compensation. It is redundant since you are using G29 for mesh bed compensation already. So I think you can just remove the G32 or alter the bed.g to use the independent Z motor leveling.

    So before a print all you have to do is

    G28 ; home all axis
    G29 ; mesh compensation probe routine if you want to probe before every print

    Or G29 S1 ; load previously saved mesh map



  • Thank you.

    I will try it and tomorrow I comment the results.

    Thank you


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