My printer is making a horrible noise then goes to front right then starts over. I have done the tensioning procedure multiple times and it helps for a little bit then it begins again.
I am new to this and need help to figure out my problem Please advise…
Hi @Brasswheel, welcome,
It may be from the video, but are you printing in sport or ludicrous modes?
It seems it misses a step and, after that, home the toolhead.
What changes did you make besides the tensioning procedure? Is this new? Have you done maintenance?
To eliminate a bunch of uncontrollable causes, “reset” your printer:
If, at any point, you get an error, please describe it.
Otherwise, restest with a small print file.
Thank you for responding I am printing in Standard Mode. I have not made any changes other than cleaning the CF rods and re tensioning the belt and cleaning and lubing the z-screws per the instructional videos. I did these things after this problem began. This problem happened once a couple of weeks ago and seems to be getting more and more frequent until the point that I can no longer use the printer. The firmware is up to date. Every time that I re-tensioned the belt I have run the calibration and self test. I am rerunning now as suggested after the power cycle. I received no errors during this process. I have printed a few test prints and frankly they look horrible. They are rough and there are gaps that are appearing see Basic PLA Green Picture. The holes are all out of round. I am leaning towards something mechanical. I tried what was suggested… Below video may give a better picture of what I’m dealing with.
From that video it shows that your printer is detecting a Step loss thus re-homes the head after each step-loss detection hence the movement to the corner so likely there is something that is causing a significant movement restriction of the X/Y axis resulting in the step loss.
How are the belts looking and are they running centered on the pulleys?
They are not running centered on the pulleys. I can center the ones on the back then others are on the flange. Theses are images of the smooth ones in the back. Noticed the build up.
Your post has got me thinking though. If one of the pulleys is seizing up during operation it would cause this issue? I would need to disassemble the machine remove the belt and check all of the bearings. Has anyone had experience where this was the case. I am new to this and need all the help I can get.
Hmm your photos are definitely not in the winner circle of an in focus competition.
That the belts are not perfectly centered is normal and they will also move up and down during operation however if the belts are riding hard against the sides then that could indicate an underlying problem and the belt could get damaged/delaminated from too much side pressure which in turn could cause snagging.
Build up on the wheels can happen over time and as such is not an immediate concern. Clean the build up and the belts the best you can and if that build-up comes back in a short time then investigate a little deeper.
A systematic approach to troubleshoot your issue will serve you better then to just disassemble everything and throw new parts at it needed or not.
How many running hours do you have on that printer?
The printer has 532 Hours on it now. Bambu customer service is not helping me so far. I am at my wits end on this. I am including pictures here to show how out of round the circular holes get as the print adds on layers. The left is the bottom of the part and the right is the top. Perhaps someone will recognize this and it will help me solve the bigger problem of the steeper motor loosing step and rehoming.
fwiw, my printer is doing this same exact thing. it prints a bit, then re-homes, and keeps going. as layers build up higher, the frequency of stopping gets such that it will just repeat going back and forth with no actual printing occurring. layer shifts or skipped steps are a result. and a terrible noise which seems to be related to z axis ? but there is no mechanical issue , i can move everything around without the sound occurring. i removed my nozzle and noticed it was slightly bent, i manually straightened it out and was able to get more of the part to print- however at higher layers it went back to doing this pausing / grinding thing. imy gut feeling is it could be a failed stepper driver, affected by heat, which doesnt work right after reaching a high temperature. i’ll keep trying to fix it and let you / the community know if i do. a couple things i plan on trying:
-different sd card (possibly its writing/reading slowly? buffer fills up and cant read new data fast enough?)
-new nozzle (not likely- it would fault out at all layers, not just high ones?)
-different filament (not likely for reason above)
-revert to older firmware 1.07.01 (was on 1.08, reverted to 1.07.02, same thing)
-change environment (its hot AF in the garage. however my other x1c in the same location is working fine)
anything else?
