Printing issues rings

General Discussion
1

Basic Information:

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20230129_101041
20230129_1010411920×2560 115 KB

20230129_101049
20230129_1010491920×2560 103 KB

20230129_101105
20230129_1011051920×2560 160 KB

x] Printer Model: ender 7
MCU / Printerboard: stock creality
klippy.log

Fill out above information and in all cases attach your klippy.log file. Pasting your printer.cfg is not needed
When pasting code or config snippets use the code tags </> in the menu above

Describe your issue:

After replacing original hotend with spider pro hotend and replacing the bowden extruder with lgx lite, I started getting rings around my prints at about 5mm entervals.
I have done pressure advanced callinration as well as extruder steps callibration. I will attach my cfg and log file from my pc now.

2

That’s not a Klipper issue, that’s a mechanical problem. Your Z-axis is likely binding somewhere.

3

klippy (2).log (2.5 MB)
printer (1).cfg (6.8 KB)

4

ok, i did tighten the screws(a bit lol) maybe a (bit) too much. let me try loosen them

5

While I agree with @Arakon that this looks like a mechanical issue with the z-axis, I’d still have a question:

  • What stepper drivers are used on an Ender 7?
  • Did you do whatever is necessary to tune them to around ~0.5A as required by the LGX stepper motor?
6

the stepper drivers are the original that come with that motherboard.
Now for the LGX i did notice it getting hot and was gonna tune the motherboard for that using a small screw driver and voltometer but for now i just added a 24v fan at the back of the LGX and it seems to be cool to touch now. but i will get to doing the motherboard these coming days.
Im more worried about the rings, i have loosened the screwes a bit seems like its moving a bit more free. i will do a test print now.

7

I believe you were right. I had over tightened the back holding the Z axis. I loosened it up and played a bit with it and now seems to be getting better prints. Going to post results as soon as its done. But from looks of it looking much better. I may have to rerun the pressure advanced and extrusion test again just to make everything dial in.