Bad print issues

Phaedrux

In your first config you had extruder jerk at 30000, and the second one it was 300. I think 3000 is probably a better value.

I suspect that the issue may be in the Cura profile.

Maybe give this profile a try. Ender3.curaprofile.txt

You'll have to remove the .txt extension

EasyTarget

For the 'Pause and blob' part of this; can I ask which Cura version you use? Is it 4.1? if so, upgrade..
This sounds horribly similar to the very frustrating lightspeed bug where:

The printer is not pausing, it's just taking 20s to travel 0.1mm in Z
Reasons for this are somewhat comical (at least to me, I've worked with developers a lot and the facepalm factor caused by this commit is quite high)

Elliot

@EasyTarget I am using cura 4.2.1 is there anything I can do to stop the z-axis from taking so long to travel?

EasyTarget

@Elliot said in Bad print issues:

is there anything I can do to stop the z-axis from taking so long to travel?

You have already fixed it by running 4.2.1, this bug only affected v4.1.0, and only for certain types of Cartesian printer definitions. It bit me badly and sounded similar, hence the question.

Elliot

@EasyTarget So if I am running 4.2.1 and still having this issue, it is most likely not cura and a printer setting?

PaulHew

@Phaedrux wrote the manual for the ender3 config. Also his Cura profile is good starting point.
Have you followed it from beginning to end especially the calibration of extruder steps and flow rate and put the correct value in Cura under Material - Flow?

Is it a standard Ender3 with no modifications apart from the BLT?
Also what filament type are you printing with? PLA or PET-G

I know it is a lot of questions, but I made mistakes when I set my Ender3 up, but now it runs smooth as silk thanks to Phaedrux and others on this site.

Elliot

@PaulHew Yes, I also just tried on Simplify3d.

It is a standard ender 3 with a BlTouch.

I am using PLA.

Do you mean these manuals:

https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+2:+Configuration/38

https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+4:+Calibration/40

If not can you please point me in the right direction.

Thanks

PaulHew

Yes, you have the right manuals.

Not up on S3D, Could not justify the £140

Check your retraction settings in Cura, try 1.5mm retract 40 speed.
Also you might want to print a temp tower and a retraction test., you could be running too hot and not enough retraction.

I do not know what experience you have and I hope I am not teaching you to suck eggs!

Teaching Tech on You Tube had some How-to s on Retraction and the likes, worth checking out. Also Chep's YouTube videos are helpful also.
MakersMuse also on retraction, helped me get rid of the strings.

Dont expect miricles on your first prints, but the manual Phaedrux wrote was a god send, and I still use bits of it like the calibration on my
RailCore II.
It took about about week of tweaking after swapping over to the Maestro board to get something semi decent.
Also make sure both sides of the Gantry that the hotend sits on are the same height and that the rollers are 'snug' so there is no slop. Again there are you tube videos on this.

As my signature states, I am not running much of the original printer.
Bondtech do a nice hot end conversion kit for Creality.

Elliot

@PaulHew I am in the 30-day money-back period of S3D. I thought I would try it if it helped my prints.

No not at all, I am constantly learning and you provided some good places/points to look at.

It's just a bit frustrating. My Ender 3 on stock board was making better prints than what I am getting now. Just wondering how much more tinkering it will take to get to where I was already.

The one thing that I tell my self is nice about the Duet WIFI now is the WIFI aspect of it. However, event that seems very temperamental and it can take around 30 mins to get connected to it and then it randomly drops the connection.

poohzaza

just want to help you can try my config i have a bltouch and e3d hotend and bontech gear exetruder 3:1 you can use my config as and starting point i use an ender 3 pro
here is my config
; Configuration file for Duet WiFi (firmware version 2.03)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2.0.3 on Tue Sep 10 2019 09:03:05 GMT+0700 (Indochina Time)

; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"enderpooh" ; set printer name

; Network
M551 P"do you want to know" ; set password
M552 S1 ; enable network
M586 P0 S1 ; enable HTTP
M586 P1 S1 ; enable FTP
M586 P2 S0 ; disable Telnet

; Drives
M569 P0 S0 ; physical drive 0 goes backwards
M569 P1 S0 ; physical drive 1 goes backwards
M569 P2 S1 ; physical drive 2 goes forwards
M569 P3 S1 ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3 ; set drive mapping
M350 X256 Y256 Z16 E16 I0 ; configure microstepping without interpolation
M92 X1280.00 Y1280.00 Z400.00 E410 ; set steps per mm
M566 X8.00 Y8.00 Z0.40 E5.00 ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z6000.00 E1200.00 ; set maximum speeds (mm/min)
M201 X200.00 Y200.00 Z100.00 E250.00 ; set accelerations (mm/s^2)
M906 X700 Y700 Z760 E800 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 X230 Y230 Z250 S0 ; set axis maxima

; Endstops
M574 X1 Y1 S1 ; set active high endstops

; Z-Probe
M574 Z1 S2 ; set endstops controlled by probe
M307 H4 A-1 C-1 D-1 ; disable heater on PWM channel for BLTouch
M558 P9 H9 F120 R0.2 T18000 ; set Z probe type to bltouch and the dive height + speeds
G31 P25 X41 Y-12 Z0.55 S35 ; set Z probe trigger value, offset and trigger height
M557 X125:271 Y25:200 S0 P3:3

; probe locoation
M557 P1 X41 Y25
M557 P2 X120 Y25
M557 P3 X200 Y25
M557 P4 X200 Y135
M557 P5 X120 Y135
M557 P6 X41 Y135
M557 P7 X41 Y200
M557 P8 X120 Y200
M557 P9 X200 Y200

; Heaters
M305 P0 T100000 B4138 R4700 ; set thermistor + ADC parameters for heater 0
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M305 P1 T100000 B4725 C7.060000e-8 R4700 ; set thermistor + ADC parameters for heater 1

; Fans
M106 P0 S0 I0 F500 ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned on
M106 P1 X100 T50 H1 S0 I0 F500

; 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 defined
M911 S22.8 R23.5
;M915 P0:1 S8 H185 F1 R3
M591 D0 P2 C3 S1
M572 D0 S0.5
M376 H10
M592 D0 A0.01 B0.0005

and i just use stock cura profile and remove max feed rate and travel accellration
and add g29 s0 for auto bed leveling