extruder problems

[Northspire]

Hi

I finally got back to working on my max v2 and I cannot seem to get it to complete a print it stops printing and chews up the filament.

it starts out fine.
[img]https://i.imgur.com/dziq7sH.jpg[/img]

but ends up chewing up the filament
[img]https://i.imgur.com/tx0ygGp.jpg[/img]
This was supposed to be the back cover of my paneldue enclosure. this is all it printed. it also seems the filament will not retract now even at 235c with pla.
[img]https://i.imgur.com/uHz11lK.jpg[/img]

here is my config.g

Code: Select all

; Configuration file for dc42 Kossel

; Communication and general
M111 S0                             ; Debug off
M550 PPrintor		        		; Machine name (can be anything you like)
M551 Preprap                        ; Machine password (used for FTP)
M540 P0xBE:0xEF:0xDE:0xAD:0xFE:0x42 ; MAC Address
;*** Adjust the IP address and gateway in the following 2 lines to suit your network
M552 P0.0.0.0						; IP address (0 = use DHCP)
M554 P192.168.0.254                 ; Gateway
M553 P255.255.255.0                 ; Netmask
M555 P2                             ; Set output to look like Marlin
M575 P1 B57600 S1                   ; Set auxiliary serial port baud rate and require checksum (for PanelDue)

; Axis and motor configuration
M569 P0 S1							; Drive 0 goes forwards
M569 P1 S1							; Drive 1 goes forwards
M569 P2 S1							; Drive 2 goes forwards
M569 P3 S1							; Drive 3 goes backwards
M569 P4 S1							; Drive 4 goes backwards
M574 X2 Y2 Z2 S1					; set endstop configuration (all endstops at high end, active high)

M665 R144.378 L291.060 H330.915 B140.0 X0.335 Y0.174 Z0.00	; set delta radius, diagonal rod length, printable radius, homed height and XY tower corrections
M666 X0.10 Y0.16 Z-0.26                                         ; put your endstop adjustments here, or use auto calibration to find them
M92 X80 Y80 Z80					; Set axis steps/mm (20 tooth pulleys, 0.9deg/step motors)
M906 X1000 Y1000 Z1000 E1200 I40	; Set motor currents (mA)
M201 X3000 Y3000 Z3000 E1000		; Accelerations (mm/s^2)
M203 X20000 Y20000 Z20000 E3600			; Maximum speeds (mm/min)
M566 X1200 Y1200 Z1200 E1200		; Maximum instant speed changes
G21                                 ; Work in millimetres
G90                                 ; Send absolute coordinates...
M83                                 ; ...but relative extruder moves

; Thermistors and heaters
M305 P0 T100000 B3950 R4700 H0 L0	; Typical Chinese bed thermistor. Put your own H and/or L values here to set the bed thermistor ADC correction.
M305 P1 T100000 B4388 R4700 H0 L0	; E3Dv6 hot end. Put your own H and/or L values here if necessary to set the first nozzle thermistor ADC correction.
M301 H0 P20 I0.5 D1000 T0.85 W150 B5 ; PID settings for the bed
M301 H1 P10 I0.10 D100 T0.50		; PID settings for extruder 0
M307 H1 A426.7 C196.3 D11.5 B0
M570 S200							; Allow extra heating time

; Tool definitions
M563 P0 D0 H1                       ; Define tool 0
G10 P0 S0 R0                        ; Set tool 0 operating and standby temperatures
M92 E445.83	                       	; Set extruder steps per mm for first and second extruders

; Z probe and compensation definition
M558 P1 X0 Y0 Z1.0 H20 F300 T12000		; Z probe is IR and is not used for homing any axes, Z probe dive height 3mm, probing speed 300mm/min, travel speed 12000mm/min
G31 X0 Y0 Z0.42 P500				; Set the zprobe offset and threshold (put your own values here). For a delta, use zero X and Y offset.

;*** If you are using axis compensation, put the figures in the following command
M556 S78 X0 Y0 Z0                   ; Axis compensation here

M207 S7.0 F3600 Z0.1				; Set firmware retraction details
;M572 D0 S0.1						; set pressure advance
M303 H1 S240                                           ; auto tune heater 1, default PWM, 240C target or maximum temperature
M303                                                             ; report the auto-tune status or last result
G32
T0									; select first print head

Thanks

[e_hutch]

I'm not an expert, but it looks to me like you have default 7mm retracts at 60mm/s. Although I think your slicer should be setting another retraction value, from what I have read that is too high of a setting, perhaps your nozzle is clogged from over retracts? See Mhackney's blog for more info http://www.sublimelayers.com/2016/10/so ... racts.html

Perhaps change:
M207 S7.0 F3600 Z0.1

to at the most:
M207 S3.0 F1800 Z0.1
(the F setting is mm/min so F1800 is 30mm/sec)
or take it out all together and set it in your slicer.

most likely you should check your retraction settings on your slicer software and post info on what slicer you are using and any custom pre start g-code you have in the slicer settings.

Also, likely unrelated, but it looks like you are autotuning (M303) your hotend on every startup? maybe run the autotune per the instructions here https://duet3d.com/wiki/Tuning_the_heat ... re_control and manually set the model parameters. Just sounds like an unnecessarily unsafe operation being performed every time your run your printer. In fact, it looks like maybe you have done that before and have a M307 command in your config.g, but you left the M303 in there also.

Disclaimer: I have not yet gotten my duet operating but I have been doing a lot of research on the duet wiki and elsewhere in preparation for tinkering with mine.

[Northspire]

I am using KISSlicer-Pro I do not see the retract settings in the options.

[e_hutch]

I've never used kissslicer, but it looks like it is labeled "suck" instead of retract, and is under the material tab. Part of the destring container, "suck" is retraction and is performed right before a move "prime" is done after the move to restart the flow. From what I have read 2-3 mm is plenty of retraction at around 30mm/s or less on the rostock max. Wipe is how far the nozzle retraces prior to a move to help reduce stringing and jump is how far up in the z axis the nozzle moves to try and break the strings.

Were you able to unclog your hotend? there are a few videos and forum replies on the google machine for help on that if you need it.