Mutli Head Duplication Methods



  • Looking for info on how to run a second or third slave printhead that runs along with my primary Y carriage on a (Duet Wifi) CoreXY machine. Seems this would be a Slicer function to just duplicate the primary extruder gcodes to a second extruder, and also heater control. I have seen this done before, but not sure what its called, so please forgive my ignorance.


  • administrators

    The usual solution is IDEX (independent dual X carriages) which offers dual material prints, duplication mode, and mirror mode. Duplication and mirror modes are handled in firmware, no slicer involvement is needed.



  • Thanks Dave, I just plan on staking extra printheads to the existing drive belt. Im using Zesty Nimbles, and if I could just link the drive cables together on one stepper I would be all set, save for the extra demand on the stepper. So, is there an easy way in firmware to map my selected tool to multiple E steppers?

    The other thing im not sure about is how to run multiple tool heaters simultaneously. I have a Duex 5 with extra heater outputs if I want to put more than two heads on one printer. Probably need to up my power supply depending on how many I run at a time.

    Any thoughts would be greatly appreciated.



  • @henrydara said in Mutli Head Duplication Methods:

    ...................So, is there an easy way in firmware to map my selected tool to multiple E steppers?

    ....................The other thing im not sure about is how to run multiple tool heaters simultaneously.

    Any thoughts would be greatly appreciated.

    M563 is the command you want. https://duet3d.dozuki.com/Wiki/Gcode#Section_M563_Define_or_remove_a_tool

    So e.g, M563 P0 D0:1:2 H1:5:6 would map extruder drives 0,1 and 2 and heaters 1, 5 and 6 to Tool 0.

    Depending on how you have the extruders connected, you would then use M567 to set the mixing ratio. https://duet3d.dozuki.com/Wiki/Gcode#Section_M567_Set_tool_mix_ratios



  • @deckingman Thank You Sir!! Seems so obvious now. Silly me. 🙂



  • No matter what, only E0 extrudes, but I need both to run

    I can operate E0 and E1 on the web interface, and they work predictably, but when I run a print that is set for Tool 1, only the E0 Extruder spins. If I swap D1 for D0 in M563, the other drive runs, but still not both. My extruder motors are connected to E0 and E1. Pretty sure I have something messed up, but just cant see it.

    It all looked pretty straightforward, my config is like this...

    ; Drive/Axis Setup
    M584 X0 Y1 Z5:6:7 E3:4:8:9 ; Drive Mapping

    ;Tool Setup
    M563 P0 S"2 Nozzle Ditto Mode" D1:0 H1:2 ; Ditto printing 2 tools
    ;M563 P0 S"RT Tool" D0 H2 ; Std Printing - Define tool 0
    G10 P0 S0 R0 X-30 Y0 ; Set tool 0 temperatures and offsets
    ;M563 P1 S"LT Tool" D1 H1 ; Std Printing - Define tool 1
    G10 P0 S0 R0 X30 Y0 ; Set tool 1 temperatures and offsets

    Full config...

    ; Configuration file for Duet WiFi (firmware version 1.21)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool v2 on Sat Dec 08 2018 12:14:23 GMT-0500 (Eastern Standard Time)

    ; General preferences

    G90 ; Send absolute coordinates...
    M83 ; ...but relative extruder moves
    M200 D1.75 ; set all extruder filament diameters to 1.75mm
    M667 S1 ; Select CoreXY mode

    ; Z-Probe
    M307 H6 A-1 C-1 D-1 ; Disable the 6th Heater to free up PWM channel 4 on the Duex board. (Special Parameters to chg PWM ch to discreet)
    M307 H7 A-1 C-1 D-1 ; Disable the 7th Heater to free up PWM channel 5 on the Duex board. (Special Parameters to chg PWM ch to discreet)
    M558 P5 H5 F50 T2000 X0 Y0 Z1 ; Set Z probe type/mode 5. H=Dive Height. F=Speed the bed moves T=Travel Speed(From https://betrue3d.dk/bltouch-on-duet-wifi-configuratio-and-usage/#wiring)
    ;G31 P100 X22 Y0 Z1.25 ;Dry print(Z - larger number = smaller gap) Set Z probe trigger value, offset and trigger height
    G31 P100 X-3 Y30 Z.50 ;(Z - larger number = smaller gap) Set Z probe trigger value, offset and trigger height
    ;G29 S1 ; Enable Mesh Bed Compensation (S1 = Load Prev Grid, S0 = New grid probe on pwr up))
    M557 X60:370 Y10:350 S50 ; Define mesh grid for printing compensation
    M376 H10 ; Set Mesh Bed Taper Height.

    ; Network
    M550 P"Venom II" ; Set machine name
    M551 P"ADLLC: ; Set password
    M552 S1 ; Enable network
    ;*** Access point is configured manually via M587
    M586 P0 S1 ; Enable HTTP
    M586 P1 S0 ; Disable FTP
    M586 P2 S0 ; Disable Telnet

    ; Drive Directions
    M569 P0 S0 ; Drive 0 goes forwards
    M569 P1 S1 ; Drive 1 goes forwards
    M569 P2 S1 ; Drive 2 goes forwards
    M569 P3 S0 ; Drive 3 goes forwards
    M569 P4 S0 ; Drive 4 goes forwards
    M569 P5 S0 ; Drive 5 goes forwards
    M569 P6 S0 ; Drive 6 goes forwards
    M569 P7 S0 ; Drive 7 goes forwards

    ; Drive Scaling
    M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
    M92 X160.00 Y160.00 Z1600.00 E2660 ; Set steps per mm

    M566 X15 Y15 Z.5 E20 ; Set maximum instantaneous speed changes (mm/min)
    M201 X800.00 Y800.00 Z100.00 E1200.00 ; Set accelerations (mm/s^2)
    M203 X18000.00 Y18000.00 Z1200.00 E10000.00 ; Set maximum speeds (mm/min)
    M204 R1000 ; Set Retract accelerations
    M906 X1000.00 Y1000.00 Z800.00 E600.00 I30 ; Set motor currents(mA) and motor idle factor in percent
    M84 S30 ; Set idle timeout

    ; Axis Limits
    M208 X0 Y0 Z0 S1 ; Set axis minima
    M208 X365 Y395 Z440 S0 ; Set axis maxima

    ; Drive/Axis Setup
    M584 X0 Y1 Z5:6:7 E3:4:8:9 ; Drive Mapping
    M671 X12:455:455 S3 Y167:390:0 ; Set XY offsets for Z screws at

    ; External IO
    M581 E5 S0 T0 C0 ; Configure E-Stop as E5(E6) S0(NC) T0(Trigger EStop) C0 (Anytime)

    ; Endstops
    M574 X1 Y1 S1 ; Set active high endstops for X and Y axis
    M574 Z1 S2 ; Set endstops controlled by probe (disabled for commissioning W/O Z probe)

    ; Heaters
    M307 H0 B0 S1.00 ; Disable bang-bang mode for the bed heater and set PWM limit
    M305 P0 T100000 B4643 R4700 ; Set thermistor + ADC parameters for bed heater 0
    M143 H0 S120 ; Set temperature limit for heater 0 to 120C

    M305 P1 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 1
    M143 H1 S280 ; Set temperature limit for heater 1 to 280C
    M305 P2 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 2
    M143 H2 S280

    ;This section from testing mosquito hot end
    ;M305 P1 T100000 B4634 C1.068831e-7 ; Set thermistor + ADC parameters for heater 1 (Mosquito Thermistor)
    ;M305 P1 T500000 B9000 C1.196220e-7 ; Set thermistor + ADC parameters for heater 1 (Mosquito Thermistor Original)
    ;M143 H1 S280 ; Set temperature limit for heater 1 to 280C
    ;M305 P2 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 2 (E3D Thermistor)
    ;M305 P2 T500000 B4634 C1.068831e-7 ; Set thermistor + ADC parameters for heater 2 (Mosquito Thermistor)
    ;M143 H2 S280 ; Set temperature limit for heater 1 to 280C

    M305 P3 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 3
    M143 H3 S50
    M305 P4 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 4
    M143 H4 S50
    M305 P5 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 5
    M143 H5 S80

    ; 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 C"Box_Fan" ; 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
    ;M106 P1 S0.3 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off

    ; Tools

    M563 P0 S"2 Nozzle Ditto Mode" D1:0 H1:2 ; Ditto printing 2 tools
    ;M563 P0 S"RT Tool" D0 H2 ; Std Printing - Define tool 0
    G10 P0 S0 R0 X-30 Y0 ; Set tool 0 temperatures and offsets
    ;M563 P1 S"LT Tool" D1 H1 ; Std Printing - Define tool 1
    G10 P0 S0 R0 X30 Y0 ; Set tool 1 temperatures and offsets

    ;M572 D0 S0.05 ; Set Pressure Advance for Extruder 1
    ;M572 D1 S0.05 ; Set Pressure Advance for Extruder 2

    ; Automatic power saving
    ;M911 S10 R11 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

    ; Simulated print time: 0



  • correction I am trying to print using Tool 0

    Couldnt edit prior post cause it kept flagging me as spam ???



  • @henrydara You need to set the mixing ratio for the tool to 1.00:1.00. I'm on my phone right now and can't off hand remember the gcode command so you'll have to look it up.


 

Looks like your connection to Duet3D was lost, please wait while we try to reconnect.