Hey I tried using CV Klipper additions and kept getting problems with the builds getting knocked off after that, so I did a firmware reset with the printer, calibrated everything again and then again. Now the build didn’t get knocked off, but the layers are shifting instead.
Nothing but problems so far.
I have a feeling it has to do with some values inside Klipper, which I think have changed after the reset, but I don’t know what.
I don’t run Klipper, but a layer shift happens on all printers.
It could be 2 things.
1: your print is still getting bumped by the nozzle, it’s just not getting knocked off the bed.
2: a loose belt. I can see a screw in your pic, so I’m guessing that’s the back of the plate.
So you want to check the tension on the Y belt…because your print is moving forward.
Thanks.
I have checked the belts and they all seem tight.
I have reset the firmware, did all of the calibrations twice including the accelerometer thing.
I have changed orca profiles to something I knew worked previously.
That’s all I really know.
It also sounded like it occasionally skipped a teeth. I knew that sound from DIY projects, but I couldn’t see anything or identify where it came from. Could have been scratching the print also, but I’m pretty sure that would have knocked it off judging by the loudness of it.
I don’t know what infill you are using, but some of them will hit the nozzle when it passes over.
Switch to Gyroid & try your print again.
I found an article, that describes the same problem as me and it says the acceleration is too high. In my case 8000. They lowered it, which solved the problem.
Unfortunately I can’t seem to do it. Whenever I adjust the settings, then restart the acceleration just sets itself back to 8000. Not sure what to do
//Edit: i have now managed to save the settings, also managed to get a small print working, before it broke again on the same piece. It significantly reduced the sound of missed steps in the gears, but still sounds off.
Will try messing around with speeds more later
Hey so another edit.
I have completely reset my firmware and software (orca) and fully believe, that the problem was with the acceleration values.
After the first failed print I had reset the firmware, which then also reset the print speed. That’s when the layer shifts started. I halved the speed and was able to print small objects but no big ones, until I noticed that orca slicer overrides those values for me. After also changing those values everything now works fine (or so I believe / taking hours to do the tests).
What I think happened is, that the initial speed is set very generous to a perfect condition stepper, but as soon as there is a little wear and tear it starts missing a step and therefore the whole thing is miss aligned. Solution is to slow down the speed or possibly replace the stepper motor
ok, keep us updated.
