Bad printing quality for unknown reason



  • I am working on a new build but I cannot get a decent print. Every print comes out much worse than I would expect. I printed a benchy and a spiralized vase as a test. I though it was over extrusion but I recalibrated my E steps. I thought it could be retraction but the vase was spiralized so no retraction. This is with printing from a completely stock Cura PLA profile. I don't know what to look at next, this is my first scratch build so any help is appreciated.

    Spiralized Vase
    3D Benchy

    ; Configuration file for Duet WiFi (firmware version 3)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool v3.1.4 on Thu Sep 24 2020 07:39:49 GMT-0400 (Eastern Daylight Time)
    
    ; General preferences
    G90                                                ; send absolute coordinates...
    M83                                                ; ...but relative extruder moves
    M550 P"Phantom Cube"                               ; 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 S1                                         ; physical drive 0 goes forwards
    M569 P1 S1                                         ; physical drive 1 goes forwards
    M569 P2 S0                                         ; physical drive 2 goes backwards
    M569 P3 S0                                         ; physical drive 3 goes backwards
    M584 X0 Y1 Z2 E3                                   ; set drive mapping
    M350 X16 Y16 Z16 E16 I1                            ; configure microstepping with interpolation
    M92 X200.00 Y200.00 Z400.00 E410.00                ; set steps per mm
    M566 X720.00 Y720.00 Z12.00 E120.00                ; set maximum instantaneous speed changes (mm/min)
    M203 X18000.00 Y18000.00 Z600.00 E1200.00          ; set maximum speeds (mm/min)
    M201 X500.00 Y500.00 Z250.00 E1000.00              ; set accelerations (mm/s^2)
    M906 X1600 Y1600 Z1600 E1600 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 Y310 Z310 S0                             ; set axis maxima
    
    ; Endstops
    M574 X1 S1 P"xstop"                                ; configure active-high endstop for low end on X via pin xstop
    M574 Y2 S1 P"ystop"                                ; configure active-high endstop for high end on Y via pin ystop
    M574 Z1 S2                                         ; configure Z-probe endstop for low end on Z
    
    ; Z-Probe
    M558 P1 C"zprobe.in" H20 F240 T6000                ; set Z probe type to unmodulated and the dive height + speeds
    G31 P25 X0 Y-15 Z14.5                              ; set Z probe trigger value, offset and trigger height
    M557 X40:300 Y20:280 S65                           ; define mesh grid
    
    ; Heaters
    M308 S0 P"bedtemp" Y"thermistor" T100000 B4138     ; 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 A176.4 C339.5 D7.2 S1.00 V23.8 B1          ; enable bang-bang mode for the bed heater and set PWM limit 
    M140 H0                                            ; map heated bed to heater 0
    M143 H0 S100                                       ; set temperature limit for heater 0 to 100C
    M308 S1 P"e0temp" Y"thermistor" T100000 B4138      ; 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 A297.7 C97.1 D6.5 S1.00 V24.0 B0           ; disable bang-bang mode for heater  and set PWM limit
    
    ; Fans
    M950 F0 C"fan0" Q500                               ; create fan 0 on pin fan0 and set its frequency
    M106 P0 S0 H-1                                     ; set fan 0 value. Thermostatic control is turned off
    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
    M501                                               ; load saved parameters from non-volatile memory
    M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
    T0                                                 ; select first tool
    


  • i'm guessing your thermistors settings are wrong as they're the default values.
    Do you know what thermistors you used?



  • Ok that could make sense... It came from a parts kit so I will have to do a bit of digging to get the exact information. I have a config that came with the kit but it looks like some lines changed in the update to RRF 3.

    EDIT: Also, bed and extruder both say 21.7C at idle so I assumed they were set correctly.

    ; Configuration file for Duet WiFi (firmware version 1.21)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool on Tue Oct 09 2018 13:27:56 GMT+0300
    
    ; General preferences
    M80				; Turns on the ATX power supply
    G90                                                ; Send absolute coordinates...
    M83                                                ; ...but relative extruder moves
    
    M667 S1                                            ; Select CoreXY mode
    
    ; Network
    M550 PBLV mgn Cube                                 ; Set machine name
    M552 S1                                            ; Enable network
    M587 S"your_wifi_name" P"your_password"            ; 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
    M569 P0 S0                                         ; Drive 0 goes backwards blv: its was S1
    M569 P1 S0                                         ; Drive 1 goes backwards blv: its was S1
    M569 P2 S1                                         ; Drive 2 goes forwards
    M569 P3 S1                                         ; Drive 3 goes backwards WAS 0
    M350 X16 Y16 Z16 E16 I1                            ; Configure microstepping with interpolation
    M92 X200 Y200 Z400 E405.18                         ; Set steps per mm for Bondtech. 
    M566 X600 Y600 Z24 E300                            ; Set maximum instantaneous speed changes (Jerk) (mm/min) 
    M203 X20000 Y20000 Z600 E2000                      ; Set maximum speeds (mm/min) 
    M201 X3000 Y3000 Z100 E5000			   				 ; Set accelerations (mm/s^2)
    M906 X1600 Y1600 Z1600 E1600 I30                   ; Set motor currents (mA) and motor idle factor in per cent
    M84 S30                                            ; Set idle timeout
    
    ; Pressure advance
    ; M572 D0 S0.05					   					; disabled Pressure advance
    
    ; Axis Limits
    M208 X-23 Y0 Z0 S1                                 ; Set axis minima
    M208 X320 Y321 Z350 S0                             ; Set axis maxima
    
    ; Endstops
    M574 X1 Y2 S1                                      ; Set active high endstops edit: Y endstop is high(max).
    
    ; Filament sensor
    M591 D0 P1 C3 S1				 					  ; Set Filament sensor Simple type (High) for extruder drive 0, connected to endstop input 3 (E0)
    
    ; Z-Probe
    M574 Z1 S2                                         ; Set endstops controlled by probe
    M307 H1 A372.3 C109.6 D4.6 B0			  		 ; Set PID for hotend values
    M307 H0 A99.1 C453.2 D2.2 B0					  ; Set PID for heated bed values
    M558 P1 H5 F200 T9000 I0 R0.5			 		  ; Set Z probe type mini ir sensor
    G31 P500 X-2 Y-16.4 Z1.043                         ; Set Z probe trigger value, offset and trigger height
    M557 X30:270 Y30:270 S80			   				; Define mesh grid
    
    ; Heaters
    M305 P0 T100000 B3950 C0 R4700                     ; Set thermistor + ADC parameters for heater 0
    M143 H0 S100                                       ; Set temperature limit for heater 0 to 100C
    M305 P1 T100000 B3950 C0 R4700                     ; Set thermistor + ADC parameters for heater 1
    M143 H1 S260                                       ; Set temperature limit for heater 1 to 260C
    
    ; Fans
    M106 P0 S0 I0 F500 H-1                             ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P1 S1 I0 F500 H1 T35                          ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
    M106 P2 S1 I0 F500 H1 T35                          ; 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 S21 R22 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
    M564 H0                                   	   ; Let the Jog buttons work blv: added to allow jog buttons
    


  • @Phantom329 said in Bad printing quality for unknown reason:

    EDIT: Also, bed and extruder both say 21.7C at idle so I assumed they were set correctly.

    since they are all 100k thermistor the 25C degree value is the same for all. they differ at high temperatures.



  • Ok I set the thermistors to B3950 like the original config says since I can't find any documentation about the parts from the kit. I'll run another print after I auto tune and see how it goes.



  • can you post a link to the kit?





  • @Veti I think it printed better but it still has the weird lines artifact. Printing a benchy now.
    EDIT: Benchy failed but same story.

    print



  • Hey, I just happen to see you said Cura, just a wild guess on my part. Is your Slicer set to 3mm filament?



  • @Phantom329 said in Bad printing quality for unknown reason:

    EDIT: Benchy failed but same story.

    maybe they supplied a semitec thermistor. try B4725 C7.06e-8



  • @brotherchris Nope, I have the extruder and material set to 1.75mm.



  • I slowed down the printing speed to 30mm/s and on one side it printed almost the same, smaller blobs. On the other side, though, it printed with minimal blobs and shows pretty clean lines. I'm tempted to blame the feeder... its a knock-off dual drive feeder and I had to rebuild it like 10 times to make it smooth. My friend also said it could be the hotend which is a v6 clone. What do you think?

    alt text
    alt text



  • print a temperature tower



  • @Veti Seems like its not a temperature issue
    alt text


  • Moderator

    Looks over extruded and overheated.



  • @Phantom329 said in Bad printing quality for unknown reason:

    Seems like its not a temperature issue

    did you just print the tower? it looks the same for all heights.
    you need to script the change of temperature


Log in to reply