The stock is Marlin.

I've looking old printed parts and I see that the vertical lines are from the start of the times, so I see the lines recently (maybe due new printing speeds) but are not new in my printer (do not start with Duet).

I bought new 16t pulleys and idlers for X and Y and maybe I need to change from V wheels to linear guides to completly avoid the vertical lines... or maybe print slowly is enough xD

I solved the problem with the bed heater (commented in my last message), due a parameter in the configuration.

Thank you for your help to all of you, I will keep pushing and fighting!

Ok, I have another question (not so much related).

I tunned the Hotend and bed PID and now the duet make a little noise (and constantly turn on and off a red led) related to bed heating, Is it normal and safe?

The temperatures are now a lot of stable, but I don't know if it's safe :<

Edit: The sound is not from duet, is from my PSU... can it survive? xD

I tried today some things without goods results...

Belts are with correct tension, changed to stock extruder, tested with really low acceleration (lower ringing but same vertical lines).

I see those threads that maybe can help to check some things:

https://forum.duet3d.com/topic/11192/reduced-quality-prints-from-marlin-to-duet-2-wifi/11
https://forum.duet3d.com/topic/11258/continuous-vertical-lines-on-shell/41

I designed another fan layer conduct to remove some detected vibrations with the actual one (will add weight to X but I think it's better than actual vibrations).

I will keep you updated tomorrow

Thank you and good night

@dc42 Thanks a lot, I will try to proceed with your message.

To add more info, I'm using these motors in XY: https://e3d-online.com/motors-high-torque-motor

As far as I know, I need to set M906 to X1300 Y1300 (77% of rated current, it is correct??). If it's correct, I usually work with 1250mA (-> 1200), but it's the same situation with 800mA

I tried the M593 F40 because I measured it at this frequency (but I need to check it properly).

@denke the belts are the stock belts from ender3. The frame is Ender 3 frame. My print head is not so heavy (bowden), I work specifically in this way.

I tried with stock acceleration and stock jerk with same issues :<

@phaedrux I tried with default accelerations for ender 3 with the same problem (X500 Y500). Also I checked the belts tension...

With default motherboard I was using X1500 Y1500 with really goods results.

@timothyz I will try it this afternoon, thank you. I remember that I start my setup with I40, same result after all but I need to check again xD

I will try also to use the stock extruder this afternoon...

Hello all,

I'm Pepe, nice to meet you. I have a modified Ender 3 with a Duet Wifi 1.04 updated to 2.03 (2019-06-13b2), but I have this problem from older versions (at least from 2.02RCX)

I have a really good precission in the 3d printing but I have something like ringing that I cannot remove at normal speeds (80mm/s, 40mm/s...)

I made a high tower to check the Z but the tower only present the problem that I'm talking (something like ringing):

I took two photos with some tests:

I tried to many things in the software, but the only thing that remove the "ghost" is slow down the print (25% of 80mm/s... with Speed factor in Duet Web panel).

The outer faces in the cube are printed at 64mm/s (Simplify3D applies a slow factor).

My machine mods are the next one:
-V6 clon with original titanium barrel (original ender3 heater/sensor)
-Trianglelab BMG
-Precision Piezo Orion
-XY Motech motors 0.9deg from e3d
-Z dual motors 0.9deg from e3d
-E motor is the original E motor from Ender 3 (I tried with the other motors with same results)
-Duet Wifi

This is the last configuration I tried:

config.g
; General preferences
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves

; Drives
M569 P0 S0 ; Drive 0 goes backwards
M569 P1 S0 ; Drive 1 goes backwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S1 ; Drive 3 goes forwards
M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X160 Y160 Z800 E6560 ; Set steps per mm 406 6459
;M92 X80 Y80 Z400 E93 ; Originals from Ender 3
;PEPE JERK M566 X600 Y600 Z80 E600 ; Set maximum instantaneous speed changes (mm/min)
M566 X600 Y600 Z80 E2000 ; Set maximum instantaneous speed changes (mm/min)
M203 X9000 Y9000 Z1000 E7200 ; Set maximum speeds (mm/min)
;PEPE ACCEL M201 X2000 Y2000 Z300 E3000 ; Set accelerations (mm/s^2)
M201 X2000 Y2000 Z500 E20000 ; Set accelerations (mm/s^2)
;M906 X600 Y800 Z600 E600 I10 ; Set motor currents (mA) and motor idle factor in per cent
;M906 X1250 Y1250 Z800 E600 I10 ; Set motor currents (mA) and motor idle factor in per cent
M906 X1250 Y1250 Z600 E800 I10 ; Set motor currents (mA) and motor idle factor in per cent
M84 S10 ; Set idle timeout
;M593 F40 ; cancel ringing at 40Hz

M569 F1 P1 ;Pitch mode Y motor
M569 F1 P2 ;Pitch mode Z motor
M569 F1 P3 ;Pitch mode E motor

; Axis Limits
M208 X-5.5 Y0 Z0 S1 ; Set axis minima
M208 X244 Y220 Z255 S0 ; Set axis maxima

; Endstops
M574 X1 Y1 S3 ; Set endstops controlled by motor load detection
M915 X Y S30 R2 F1 ; Set X and Y to sensitivity 1, when stall home XY and resume print, unfiltered so it does not takes 4 steps to figure out it has stalled
;M915 X Y S1 R3 F0 ; Set X and Y to sensitivity 1, when stall home XY and resume print, unfiltered so it does not takes 4 steps to figure out it has stalled

; Filament Sensor
M591 D0 P2 C3 S1 ;Filament Sensor E0

; Z-Probe
M574 Z1 S2 ; Set endstops controlled by probe
;M307 H3 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch
;M558 P1 I1 R0.4 F300 H2 T6000; ; Set Z probe type to analogico no filtered and the dive height + speeds
M558 P8 I1 R0.5 F550 H2 T6000 A1; ; Set Z probe type to digital no filtered and the dive height + speeds
;G31 P471 X0 Y0 Z-1 ; Set Z probe trigger value, offset and trigger height
G31 P100 X0 Y0 Z-0.075 ; Set Z probe trigger value, offset and trigger height DIGITAL
M557 X10:225 Y10:210 S20 ; Define mesh grid

; Heaters
M305 S"Bed" P0 T100000 B4725 C7.060000e-8 R4700
;M305 S"Hotend 0" P0 T100000 B4355 C0 R4700 ; Set thermistor + ADC parameters for heater 0 4138
M143 H0 S120 ; Set temperature limit for heater 0 to 120C
M305 S"HotEnd 0" P1 T100000 B4725 C7.060000e-8 R4700 ; Set thermistor + ADC parameters for heater 1 C7.060000e-8
M143 H1 S260 ; Set temperature limit for heater 1 to 280C

; 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 T45 ; 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 P0 S0 I0 F10 H-1 X0.5 C"Layer Fan" ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 I0 F25000 S0.8 T50 H1:2 C"Hotend Fan" ; Hot end Fan
M106 P2 I1 T35:65 H100:101:102 L0.3 F25000 S0.3 C"Duet Fan" ; Duet Fan

; Tools
;M563 P0 D0 H1 ; Define tool 0
M563 P0 D0 H1 F0
G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C

;Pressure Advance
M572 E0 S0.1

; 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

I tried with differents M906 (800 for XY) without differences...
I also tried with different microsteping (in all motors),

The ;PEPE lines are my original values after try to delete the error.

I don't know if somethis is wrong with the configuration, maybe I need to change bearings and pulleys (stock ender 3 20 tooth)

I don't know if it's an extruder issue.

If I can help you to find my errors... I will do whatever you want!!

Really thanks for reading and sorry for my not so much correct english writing