Print not starting in center



  • Hey guys,
    I am using Duetwifi with a Hyper Cube. My printer is homing x,y,z successfully and the heaters heating up to the printing temp.
    It shows that the printing is in progress, but when the print is about to start there is shake and pinch and the belt skips. After a fiew seconds it starts to print. But only at the left rear corner and not in the center. The left rear corner is my homing for X and Y. Endstops on top of the printer.My Z is on the right top.I did the Configuring RepRapFirmware for a CoreXY printer. Every thing was fine after that.The bed is 300 x 300 x 300

    ; Configuration file for Duet WiFi (firmware version 1.21)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool v2 on Fri Feb 08 2019 17:55:59 GMT+0100 (Mitteleuropäische Normalzeit)

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

    M667 S1 ; Select CoreXY mode

    ; Network
    M550 P"HyperCubeHMS" ; Set machine name
    M552 S1 ; Enable network
    ;*** Access point is configured manually via M587
    M586 P0 S1 ; Enable HTTP
    M586 P1 S1 ; Disable FTP
    M586 P2 S0 ; Disable Telnet

    ; Drives
    M569 P0 S1 ; Drive 0=X goes forwards
    M569 P1 S0 ; Drive 1=Y goes forwards
    M569 P2 S0 ; Drive 2=Z goes backwards
    M569 P3 S1 ; Drive 3=Extruder goes forwards
    M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
    M92 X80.00 Y80.00 Z400.00 E420.00 ; Set steps per mm
    M566 X900.00 Y900.00 Z12.00 E600.00 ; Set maximum instantaneous speed changes (mm/min)
    M203 X9000.00 Y9000.00 Z600.00 E6000.00 ; Set maximum speeds (mm/min)
    M201 X800.00 Y800.00 Z250.00 E800.00 ; Set accelerations (mm/s^2)
    M906 X1000.00 Y1000.00 Z1000.00 E1000.00 I30 ; Set motor currents (mA) and motor idle factor in per cent
    M84 S120 ; Set idle timeout

    ; Axis Limits
    M208 X-8 Y-28 Z0 S1 ; Set axis minima
    M208 X300 Y300 Z300 S0 ; Set axis maxima

    ; Endstops
    M574 X1 Y2 S0 ; Set active high endstops
    M574 Z1 S0

    ; Z-Probe
    ;M558 P5 H5 F120 T6000 ; Set Z probe type to switch and the dive height + speeds
    ;G31 P500 X0 Y0 Z0 ; Set Z probe trigger value, offset and trigger height
    ;M557 X15:195 Y15:195 S20 ; Define mesh grid

    ; Heaters
    M305 P0 T100000 B3950 R4700 ; Set thermistor + ADC parameters for heater 0 BED
    M143 H0 S120 ; Set temperature limit for heater 0 to 120C
    ;M307 H0 B0
    M305 P1 T100000 B3950 R4700 ; Set thermistor + ADC parameters for heater 1 Nozzle
    M143 H1 S260 ; Set temperature limit for heater 1 to 260C
    M307 H1 A611.9 C99.9 D6.0 S0.5 B0

    ; Fans
    M106 P0 S0.3 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
    M106 P2 S1 I0 F500 H1 T45 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

    ; Tools
    M563 P0 D0 H1 ; 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

    ; Custom settings are not configured

    thanks in advance
    Harry



  • Looks to me as slicer config problem, not duet config problem. What slicer are you using? Can you post beginning, lets say first 50 lines of sliced gcode file?



  • How do you have your slicer configured for your bed?

    Where is your 0,0 origin located? It should be the front left corner, regardless of where the print head homes to.

    This may help:
    https://drmrehorst.blogspot.com/2017/08/setting-up-3d-printers-origin.html

    https://duet3d.dozuki.com/Wiki/Centering_the_bed_or_setting_the_bed_origin



  • @dirtytwos said in Print not starting in center:

    It shows that the printing is in progress, but when the print is about to start there is shake and pinch and the belt skips. After a fiew seconds it starts to print. But only at the left rear corner and not in the center.

    You may need to reduce your accelerations for X and Y. On my corexy using makerslide, I have them set to 500. Also, make sure your belts are evenly tensioned.


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