quality issues with Ender 3 and Duet Wifi

bartolomeus

@WilcoE said in quality issues with Ender 3 and Duet Wifi:

@dc42 said in quality issues with Ender 3 and Duet Wifi:

How does that compare with the one produced by the other printer? Are they both printed using the same slicer and slicer settings? Do both printers have exactly the same part cooling?

Yes, same slicer and also same gcode.
Both printers have exaclty the same part cooling

All printers are stock but, my printer is:
Ender 3
Duet Wifi
BLTouch
BMG Clone Extruder

And the printer of my friend is:
Ender 3 Pro
SKR 1.3 Board
BLTouch

i realigned my z axis and I loosened my Y belt and fixed again.
now printing with my Ender 3 printer and the same PLA filement color blue.

Also saw that my M566 jerk settings where not in my config anymore. So changed it back to: M566 X480 Y480 Z100 E30000

E30000?

WilcoE

@bartolomeus said in quality issues with Ender 3 and Duet Wifi:

E30000?

Yes, that was also in my first config post.
Should i change that also to 480?

bartolomeus

@WilcoE said in quality issues with Ender 3 and Duet Wifi:

@bartolomeus said in quality issues with Ender 3 and Duet Wifi:

E30000?

Yes, that was also in my first config post.
Should i change that also to 480?

Not 480, but 30000 is too high. Maybe start with 600 or so for the bmg clone. Actually I don't know the recommend jerk setting for BMG but 30000 is too high.

WilcoE

@bartolomeus said in quality issues with Ender 3 and Duet Wifi:

Not 480, but 30000 is too high. Maybe start with 600 or so for the bmg clone. Actually I don't know the recommend jerk setting for BMG but 30000 is too high.

Ok, see on the forum some topics and i will try E2000
Again thanks for your help!

WilcoE

Well... the print is much better.

bartolomeus

@WilcoE great! Which temp did you use? The print is very shiny, looks like you printed fairly hot

WilcoE

@bartolomeus said in quality issues with Ender 3 and Duet Wifi:

@WilcoE great! Which temp did you use? The print is very shiny, looks like you printed fairly hot

yes, i like it 210.. going try it with 195 just to test what the results are

WilcoE

Results with lower temp is the same only less shiny

WilcoE

@bartolomeus said in quality issues with Ender 3 and Duet Wifi:

@WilcoE If the cube is out of dimension, and e steps are correct, you should calibrate flow. Don't change x,y,z steps.

Hi bartolomeus,

The quality of the print is now better, but the dimension's are not correct.
How can i fix this? The steps are still 80 for y and x and 400 for z.

Thanks!

dc42

@WilcoE said in quality issues with Ender 3 and Duet Wifi:

@bartolomeus said in quality issues with Ender 3 and Duet Wifi:

@WilcoE If the cube is out of dimension, and e steps are correct, you should calibrate flow. Don't change x,y,z steps.

Hi bartolomeus,

The quality of the print is now better, but the dimension's are not correct.
How can i fix this? The steps are still 80 for y and x and 400 for z.

Thanks!

How far out are the dimensions - what are the measured and expected values?

WilcoE

@dc42 said in quality issues with Ender 3 and Duet Wifi:

How far out are the dimensions - what are the measured and expected values?

i'm using this calibration cube
https://www.thingiverse.com/thing:1278865

And my dimensions are:

y: 20.38
x: 20.28
z: 19.56 but thats because of z offset. Got a bed adhesion problem will fix that later

i'm not sure if my dimensions are wrong. But when checking things out on forums and youtube video everyone talks about calibration cubes and steps.

bartolomeus

@WilcoE Maybe you are overextruding. Have you (re)calibrated esteps and have you calibrated flow?

Other thing: how are you measuring? If you don't have sharp corners, you are also measuring the corner bulge. Measure halfway on the sides.

WilcoE

@bartolomeus said in quality issues with Ender 3 and Duet Wifi:

@WilcoE Maybe you are overextruding. Have you (re)calibrated esteps and have you calibrated flow?

Other thing: how are you measuring? If you don't have sharp corners, you are also measuring the corner bulge. Measure halfway on the sides.

Meassure the smallest value, try to avoid the bulge on corners.
My e steps are calibrated but did not calibrate the flow. Thats the thing with extruder multiplier?

Veti

@WilcoE said in quality issues with Ender 3 and Duet Wifi:

Thats the thing with extruder multiplier?

yes. see https://www.thingiverse.com/thing:1796601

WilcoE

@Veti said in quality issues with Ender 3 and Duet Wifi:

@WilcoE said in quality issues with Ender 3 and Duet Wifi:

Thats the thing with extruder multiplier?

yes. see https://www.thingiverse.com/thing:1796601

Yes, done and now using flow of 93% but still my dimensions are way off when using the default steps.
The prints are now really better only the dimensions are not good.

Veti

print it a 50 or 200% scale and see if the error stays constant.

fcwilt

@WilcoE

Hi,

I set my steps/mm by "jogging" the head from DWC and insuring that, say, a 100 mm move actually moves the nozzle tip a 100 mm, easily measured with a mm scale.

Then I print my calibration cubes and adjust the size, if needed, via M579.

Frederick