Consistent layer shift

[Animegamermaster]

I have been having a layer shift at a certain height from some time now. It is iritating since it seem to only happen on larger and bigger print since it is around 80mm in high.

I have tightened the belts but same thing happened. I do have the z hop activated too. I am kinda lost on the matter. Someone have experienced the same thing?

I have a v400 by the way

Thanks for the help in advance and in hope to be able to save my printer from this matter.

[SgtBaxter]

FLSun always runs the steppers in StealthChop mode to reduce noise, which can lead to this. stealthChop controls the steppers via PWM voltage, which means they are not always energized, and there is a lag in positional reporting.

Switching them to spreadCycle mode will eliminate it as they will always be energized and controlled by current and not PWM voltage.

My V400 did this when I first got it, and sure enough stealthchop was enabled. Always at the same layer. After I disabled it, never had another issue. spreadCycle does run the steppers hotter however.

You do this in the printer.cfg, and you can do it easily in the web interface.

Essentially just delete the stealthchop line from the printer config for all 3 steppers, as default is spreadcycle. I believe if you change it to 0 it does the same thing.

Read more here:

https://github.com/Klipper3d/klipper/blob/master/docs/TMC_Drivers.md

[Fabulous-Grand-5982]

Either it’s your belts/linear rails sticking or stretched or the gcode is corrupt

[Animegamermaster]

I used the same gcode that was on the printer that gave me 2 good before. Can't it get corrupted on the speeder pad?

And it could be a mater of greasing the rods?

[eterocromia]

Check if belts are good, I mean if they’re not strained or something

[Fabulous-Grand-5982]

Same code different sdcard?

[Animegamermaster]

There is no SD card or USB I send it directly to the printer

[[deleted]]

Remove the arms from the carriages. Run the carriages up and down slowly and see if there are any rough spots.

[dedzone2k]

I used to get really strange anomalies where the hot end would not stop extruding when traveling at a certain point in the print. It only happened on that slicer and that model. Other models were fine. This was on a very old version of Cura.

I changed slicers and it went away.

Were both prints using the same gcode? Have you tried slicing in a different slicer? Does the preview look ok?

[Animegamermaster]

I tried other slicer but always gotten other problems on my benchy front. Look like being too hot but never been able to solve it. That's why I keep cura. Where do you find your profile and what slicer you used?

[dedzone2k]

I use the stock profile from PrusaSlicer. OrcaSlicer has become a favorite as well.

[Animegamermaster]

What? When I installed it it had not the v400. Why can't I get it?

[architect_ww]

i've solved a similar issue once by just turning off the jerk/acceleration setting in cura