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    Been fighting with print adhesion and mesh bed compensation.

    Scheduled Pinned Locked Moved
    Tuning and tweaking
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    • cdsmith12undefined
      cdsmith12
      last edited by

      My printer prints really good, but I can’t get a print to stay on to save my life.

      Many of you that have been around a while will remember the Vulcanus 40 COREXY, 440mm x 440mm x 400mm, this is what I built in the beginning. I got frustrated, pushed it to the side and left it for 3 years. Then when the Hemera came out a couple years ago I decided I was going to completely revamp it. I changed the electronics to a Duet 2 Wi-Fi, E3d Hemera, and BlTouch. I replaced all of the linear rods, with linear rails, and no I am not having any issues with the 4 vertical linear rails. If I take the 2 Z motor threaded rods out I can slide it up and down with no resistance. I put a WhamBam flex plate on my 8mm cast aluminum bed.

      What I have noticed recently is that when it lays down the second layer I can hear it dragging across that first layer in certain places which leads me to think that it is not loading my Mesh compensation correctly. Also I have never enclosed it, but intend to do so soon.

      I use Duet Web Control, Reprapfirmware, and PrusaSlicer

      I have other printers, but I really want to get this large format printer that I have sunk a crap load of money into with 3 different sets of electronics, and 3 different extruders to work. Thanks for any assistance.
      Prussa slicer Startup Gcode
      M104 S[first_layer_temperature] ; set extruder temp
      M140 S[first_layer_bed_temperature] ; set bed temp
      M190 S[first_layer_bed_temperature] ; wait for bed temp
      M109 S[first_layer_temperature] ; wait for extruder temp
      G28 XY ;Home XY
      M561 ; Clear any bed transform that might be in place
      G1 X203 Y208 ; Move Probe to middle of bed
      G30 ; Do a single probe
      M375 P"WhamBam.csv" ; Load my custom heightmap. Otherwise use G29 S1
      G1 Z20.0 F6000 ; Move Z to 10
      G1 X5 Y5 ; Move head to front left
      G92 E0.0 ; reset extruder position
      G1 Z0.2
      G1 X60.0 E9.0 F1000.0 ; intro line
      G1 X100.0 E12.5 F1000.0 ; intro line
      G92 E0.0 ; reset extruder position

      Config.g

      ; Configuration file for Duet WiFi (firmware version 3)
      ; executed by the firmware on start-up
      ;
      ; generated by RepRapFirmware Configuration Tool v3.1.3 on Sun Jun 14 2020 23:31:14 GMT-0500 (Central Daylight Time)

      ; General preferences
      G90 ; send absolute coordinates...
      M83 ; ...but relative extruder moves
      M550 P"The Plastic Beast" ; set printer name
      M669 K1 ; select CoreXY mode

      ; Network
      M552 S1 ; enable network
      M586 P0 S1 ; enable HTTP
      M586 P1 S0 ; disable FTP
      M586 P2 S0 ; disable Telnet

      ; Drives
      M569 P0 S0 ; physical drive 0 goes forwards
      M569 P1 S0 ; physical drive 1 goes forwards
      M569 P2 S0 ; physical drive 2 goes backwards
      M569 P3 S1 ; physical drive 3 goes forwards
      M584 X0 Y1 Z2 E3 ; set drive mapping
      M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
      M92 X80.00 Y80.00 Z810.00 E420.00 ; set steps per mm
      M566 X1000.00 Y1000.00 Z100.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
      M203 X24000.00 Y24000.00 Z300.00 E1200.00 ; set maximum speeds (mm/min)
      M201 X3000.00 Y3000.00 Z100.00 E250.00 ; set accelerations (mm/s^2)
      M906 X1400 Y1400 Z1400 E950 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 X399 Y410 Z400 S0 ; set axis maxima

      ; Endstops
      M574 X1 S1 P"xstop" ; configure active-high endstop for low end on X via pin xstop
      M574 Y1 S1 P"ystop" ; configure active-high endstop for low end on Y via pin ystop
      M574 Z1 S2 ; configure Z-probe endstop for low end on Z

      ; Z-Probe
      M950 S0 C"exp.heater3" ; create servo pin 0 for BLTouch
      M558 P9 C"^zprobe.in" H5 F100 T4000 ; set Z probe type to bltouch and the dive height + speeds
      G31 P500 X-26 Y1.7 Z0.96 ; set Z probe trigger value, offset and trigger height
      M557 X5:365 Y30:390 S20 ; define mesh grid

      ; Heaters
      M308 S0 P"bedtemp" Y"thermistor" T100000 B3950 ; configure sensor 0 as thermistor on pin bedtemp
      M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0
      M307 H0 B1 S1.00 ; enable bang-bang mode for the bed heater and set PWM limit
      M140 H0 ; map heated bed to heater 0
      M143 H0 S120 ; set temperature limit for heater 0 to 120C
      M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 1 as thermistor on pin e0temp
      M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1
      M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
      M143 H1 S285 ; set temperature limit for heater 1 to 285C

      ; Fans
      M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
      M106 P0 S0 H1 T45 ; set fan 0 value. Thermostatic control is turned on
      M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
      M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on

      ; Tools
      M563 P0 D0 H1 F0 ; 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

      ; Custom settings are not defined

      ; Miscellaneous
      M575 P1 S1 B57600 ; enable support for PanelDue
      M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
      M912 P0 S1 ; set cpu temp offset
      M501

      ; config-override.g file generated in response to M500 at 2023-02-09 21:29
      ; This is a system-generated file - do not edit
      ; Heater model parameters
      M307 H0 R0.223 K0.166:0.000 D3.49 E1.35 S1.00 B0
      M307 H1 R1.942 K0.534:0.000 D5.82 E1.00 S1.00 B0 V12.1
      ; Workplace coordinates
      G10 L2 P1 X0.00 Y0.00 Z0.00
      G10 L2 P2 X0.00 Y0.00 Z0.00
      G10 L2 P3 X0.00 Y0.00 Z0.00
      G10 L2 P4 X0.00 Y0.00 Z0.00
      G10 L2 P5 X0.00 Y0.00 Z0.00
      G10 L2 P6 X0.00 Y0.00 Z0.00
      G10 L2 P7 X0.00 Y0.00 Z0.00
      G10 L2 P8 X0.00 Y0.00 Z0.00
      G10 L2 P9 X0.00 Y0.00 Z0.00

      ; homeall.g
      ; called to home all axes
      ;
      ; generated by RepRapFirmware Configuration Tool v3.1.3 on Sun Jun 14 2020 23:31:14 GMT-0500 (Central Daylight Time)
      G91 ; relative positioning
      G1 H2 Z5 F6000 ; lift Z relative to current position
      G1 H1 X-405 Y-405 F1800 ; move quickly to X or Y endstop and stop there (first pass)
      G1 H1 X-405 ; home X axis
      G1 H1 Y-405 ; home Y axis
      G1 X5 Y5 F6000 ; go back a few mm
      G1 H1 X-405 F360 ; move slowly to X axis endstop once more (second pass)
      G1 H1 Y-405 ; then move slowly to Y axis endstop
      G90 ; absolute positioning
      G1 X31 Y5 F6000 ; go to first bed probe point and home Z
      G30 ; home Z by probing the bed

      ; Uncomment the following lines to lift Z after probing
      ;G91 ; relative positioning
      ;G1 Z5 F100 ; lift Z relative to current position
      ;G90 ; absolute positioning

      ; homez.g
      ; called to home the Z axis
      ;
      ; generated by RepRapFirmware Configuration Tool v3.1.3 on Sun Jun 14 2020 23:31:14 GMT-0500 (Central Daylight Time)
      G91 ; relative positioning
      G1 H2 Z5 F6000 ; lift Z relative to current position
      G90 ; absolute positioning
      G1 X41 Y15 F6000 ; go to first probe point
      G30 ; home Z by probing the bed

      ; Uncomment the following lines to lift Z after probing
      ;G91 ; relative positioning
      ;G1 Z5 F100 ; lift Z relative to current position
      ;G90 ; absolute positioning

      T3P3Tonyundefined 1 Reply Last reply Reply Quote 0
      • T3P3Tonyundefined
        T3P3Tony administrators @cdsmith12
        last edited by

        @cdsmith12 can you show us what the heightmap looks like using the heighmap plugin in DWC?

        also you can confirm its being loaded in the DWC Dashboard but looking at the "compensation in use:" field under "Compensation and Calibration"

        www.duet3d.com

        cdsmith12undefined 1 Reply Last reply Reply Quote 0
        • cdsmith12undefined
          cdsmith12 @T3P3Tony
          last edited by cdsmith12

          @T3P3Tony Height Map.jpg

          Under the "Compensation in use" it says "none", so I guess I need to figure out where my code is wrong. I'm also going to adjust the one corner just a hair to try to get it all green, and rerun mesh compensation.

          A Former User? 1 Reply Last reply Reply Quote 0
          • A Former User?
            A Former User @cdsmith12
            last edited by

            @cdsmith12 I think the reason you see "None" for "Compensation in use" in DWC is because the only place you have the height map loaded is in your print start code

            M375 P"WhamBam.csv" ; Load my custom heightmap. Otherwise use G29 S1
            

            it should load once you start a print.

            Also, if youre interested in expediting your probing by only probing print areas, I would suggest you take a look at this thread:

            https://forum.duet3d.com/topic/30796/only-probe-where-the-part-will-be-printed?_=1676405937900

            cdsmith12undefined 1 Reply Last reply Reply Quote 0
            • cdsmith12undefined
              cdsmith12 @A Former User
              last edited by

              @wwak84 So I figured out that it was loading, but not in time to edit before you posted. Here is the top and bottom of a print I started. I think I got my z offset better, but something is causing this ripple effect and the higher it gets the more it drags, then ultimately knocks the print off. These were today with the height map posted above. IMG_4435.jpg IMG_4434.jpg This is the print before I made this post and it is 390mm long, if you look closely it knocked it loose at about 3mm thick and then continued to print, but it has this weird wavy look, but the side view of the layers looks pretty good. IMG_4437.jpg IMG_4436.jpg

              cdsmith12undefined 1 Reply Last reply Reply Quote 0
              • cdsmith12undefined
                cdsmith12 @cdsmith12
                last edited by

                @cdsmith12 Sorry for the jumbled words, the preview didn't look like that.

                A Former User? 1 Reply Last reply Reply Quote 0
                • A Former User?
                  A Former User @cdsmith12
                  last edited by

                  @cdsmith12 I think the nozzle may be a bit too close still.

                  Its hard to troubleshoot without knowing what else you've tried and other details, but I will make a few other guesses that hopefully are helpful. These are some of the issues that I ran into with rough first layers

                  Calibrate extruder steps. If you've been using your printer fine and this is a recently developed issue then calibration doesn't seem like a probable cause but never hurts to double check.

                  Is your nozzle well used? It may have worn to a larger diameter and now adjacent lines overlap too much.

                  Does different filament cause the same issue? I had similar problems with some random amazon brand PLA and it turned out the filament had inconsistent diameter.

                  Old filament that has absorbed moisture? The excess moisture could be contributing to roughness

                  Hopefully I havent stated the obvious here

                  1 Reply Last reply Reply Quote 0
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