Uneven Layer Extrusion

guerty25 · 3 Jun 2021, 16:22

Hi all, I have a KosselXL I built using a Duet Wifi with .9 xyz steppers and 1.8 stepper on my Flex3Drive G5 remote extruder. I've dialed in nonlinear extrusion and some pressure advance (remote extrusion needs real low jerk). I've been trying to dial this in for a while now. It seems to happen at any speed. This picture was taken at a 0.2 layer height with AtomicFilament PLA. Temps were 195 hotend and 65 bed. Any help would be greatly appreciated.

Veti · 3 Jun 2021, 16:34

post your config.g and config overwrite

guerty25 · 3 Jun 2021, 16:35

@Veti

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.2.1 on Sat Jan 09 2021 13:10:44 GMT-0600 (Central Standard Time)

; General preferences
G90                                            ; send absolute coordinates...
M83                                            ; ...but relative extruder moves
M550 P"Delta"                                  ; set printer name
M665 R179.874 L360.2 B150 H463.472 X-0.032 Y-0.155 Z0.0  ; Set delta radius, diagonal rod length, printable radius and homed height
M666 X-0.42 Y-0.21 Z0.63                       ; put your endstop adjustments here, or let auto calibration find them
M572 D0 S0.00                                  ; pressure advance
M593 F24									   ; dynamic acceleration adjustment
M592 D0 A0.006 B0.0                            ; Nonlinear extrusion

; Network
M552 S1                                        ; enable network
M586 P0 S1                                     ; enable HTTP
M586 P1 S0                                     ; disable FTP
M586 P2 S0                                     ; disable Telnet
M575 P1 B57600 S0   				           ; Serial Comms for PiZeroCam on PanelDue port

; Drives
M569 P0 S1                                     ; physical drive 0 goes forwards
M569 P1 S1                                     ; physical drive 1 goes forwards
M569 P2 S1                                     ; physical drive 2 goes forwards
M569 P3 S0                                     ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3                               ; set drive mapping
M350 E8 I0                                     ; configure microstepping
M350 X32 Y32 Z32 I1                            ; configure microstepping
M92 X400.00 Y400.00 Z400.00 E2100              ; set steps per mm
M566 X1050.00 Y1050.00 Z1050.00 E125           ; set maximum instantaneous speed changes (mm/min)
M201 X5000.00 Y5000.00 Z5000.00 E360           ; set accelerations (mm/s^2)
M203 X21000.00 Y21000.00 Z21000.00 E6000       ; set maximum speeds (mm/min)
M906 X800 Y800 Z800 E700 I30                   ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                        ; Set idle timeout

; Endstops
M574 X2 S1 P"!xstop"                            ; configure active-low endstop for high end on X via pin xstop
M574 Y2 S1 P"!ystop"                            ; configure active-low endstop for high end on Y via pin ystop
M574 Z2 S1 P"!zstop"                            ; configure active-low endstop for high end on Z via pin zstop

; Z-Probe
M558 C"zprobe.in+zprobe.mod" P8 R0.4 H5 F120 T3000	;
G31 P100 X0 Y0 Z-0.120                         ; set Z probe trigger value, offset and trigger height
M557 R85 S20                                   ; 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 B0 S1.00                               ; disable 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"spi.cs1" Y"rtd-max31865"             ; configure sensor 1 as PT100
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 S300                                   ; set temperature limit for heater 1 to 300C
M307 H0 R0.588 C811.5 D11.06 S1.00 V24.1       ; Bed heater temp cal
M307 H1 R1.813 C291.5 D6.17 S1.00 V24.0        ; Hotend temp cal
M912 P0 S-7.5                                  ; MCU Temp cal

; Fans
M950 F0 C"fan0" Q25000                         ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 C"Print Fan" B0.5                   ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500                           ; create fan 1 on pin fan0 and set its frequency
M106 P1 S255 C"LED" H-1                        ; set fan 1 value. Thermostatic control is turned off
M308 S2 Y"drivers" A"DRIVERS"                  ; configure sensor 2 as temperature warning and overheat flags on the TMC2660 on Duet
M308 S3 Y"mcu-temp" A"MCU"                     ; configure sensor 3 as thermistor on pin e1temp for left stepper
M950 F2 C"fan2" Q25000                         ; create fan 2 on pin fan2 and set its frequency                        
M106 P2 H2:3 L0.15 X1 B0.3 T40:70 C"MCU Fan"   ; set fan 2 value

; 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
T0											   ; select tool 0
M307 H1 R1.806 C231.135:231.135 D6.00 S1.00 V24.0 B0; Hotend tuning

; Override
M501

; config-override.g file generated in response to M500 at 2021-03-03 19:17
; This is a system-generated file - do not edit
; Delta parameters
M665 L360.200:360.200:360.200 R180.108 H464.023 B150.0 X-0.712 Y-0.786 Z0.000
M666 X-0.159 Y-1.094 Z1.253 A0.00 B0.00
; Heater model parameters
M307 H0 R0.617 C571.627:571.627 D9.48 S1.00 V24.0 B0
M307 H1 R1.814 C221.218:221.218 D4.86 S1.00 V24.0 B0
; 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
M486 S-1

Veti · 7 Mar 2021, 06:20

@guerty25 said in Uneven Layer Extrusion:

M350 X32 Y32 Z32 I1 ; configure microstepping

the duet wifi only supports interpolation at x16. this does not work.

guerty25 · 7 Mar 2021, 16:00

@Veti I'll try dropping the interpolation part, but I was under the impression that the firmware would just ignore that anyway. I'm in the middle of a long print so I'll give it a shot when it's done.

Veti · 7 Mar 2021, 16:01

try x16 with interpolation. it should give you a smother result.

guerty25 · 7 Mar 2021, 22:33

@Veti I tried x16 with interpolation. It might be a slightly smoother, but I'm seeing very similar results.

percar · 8 Mar 2021, 02:26

Is this at 100% infill....a solid block
Post your gcode file here if you can

guerty25 · 8 Mar 2021, 02:29

@percar I’m away from my computer but the block is 10% gyroid if I remember correctly.

Jason_F3D · 1 May 2021, 18:41

Hi there, just saw your posts. Did you fix your Flex3Drive extrusion issue? If not contact me directly (Im Jason at Flex3Drive) and I will assist you.

guerty25 · 3 May 2021, 13:38

Hi @jason_f3d I spoke with you on the Flex3D Discord channel. I was the one that had play in the gears and had to scale the printable G5 parts down to 93%. Since then I also ordered a shorter flex shaft as I was still getting very slight unevenness.

Jason_F3D · 6 May 2021, 08:16

@guerty25 OK lets take another look, because scaling down to 93% doesn't work in the math. Any adjustment to mesh in self printed parts by way of shrinkage is only to take up a couple tenths of a mm at most.

Did you mean 99.3% ? Either way, contact me directly and we can set this right.