A1 strange vibration noise

Hello,

I moved my Bambu Lab A1 and the external spool holder hooked above it to tap/touch the ceiling. Since then, I have a vibrating/popping noise when printing.
Here is the video: https://youtu.be/EPs1eENvo2M
Here is a video of the same file on my 2nd Bambu Lab A1 which prints at the same time and it does not have the noise: https://youtu.be/5QNXbOPQs2w

I can’t find a video showing an equivalent problem on Reddit or here but I think it could be either a Z axis that moves like here: https://youtube.com/shorts/Z-ma-NTQQ_w?si=B1PJumjUat217ylQ
Or the screws of the Z axis belt tensioner: https://forum.bambulab.com/t/a1-z-axis-tensioner-loose-screw/65182

Do you have any advice?
Thanks in advance

PS : sorry for my english

Silly thing first - filament in the poop bin rattling stupidly?

If not then nothing laying around? tools etc you forgot? After this I guess the first step would be to find the two allen keys and tighten everything on the printer. I have the mini so cant help you on what where but everything should be a good enough clue.

Don’t forget to pop the hotend cover off and tighten/make sure nothing is loose from usage there either. (sounds like the rattle might be coming from there in the video?!)

As for support on the printer - only try to go with what they officially say on their troubleshoot sections as they are severely locked down. I found this guide for the A1 directly to help with the rails.

I would start with this let us know!

Thanks for your help :pray:

I have the noise even without trash

No tools lying around. I had made the clean
I will indeed try to tighten everything.

I have trouble locating the clicking but I will check the head too.

I will follow the tutorial to tighten the belts too

I hope to find the solution :crossed_fingers:

i know its the y axies rail thing jumping up and down or may be your heat bed as the bed the springs that hold the bed up are loose or you may manually need to levell the bed
link for wiki A1 Bed Tramming | Bambu Lab Wiki

1 Like

and no its not the poop bin not the tools its the bed cuz i have the same issue in my a1

1 Like

i level the bed manually and u aventually get rid of the vibration noise

1 Like

I am happy to see that I’m not alone

I will test that

Thanks :+1:

Difference between 2 bambulab (left vibrating):

In my experience, this looks like the difference in cooling.

I am not as familiar with the cooling options on the A1. And it usually has the opposite problem, cool to fast. But, if this was from my enclosed printer, I would say that the one on the left was further away from the Aux fan…

1 Like

The left was made in big enclosure (Yoopai) at temperature of 20°C. The right was made at 13°C in same room without enclosure

I do not know if your problem is similar to mine, but I had a tapping sound while printing. I went to Bambu support, and they provided the following. below. Maybe it can help.

Dear Bambu Lab Customer,

Thank you for contacting the Bambu Lab Support Team.

I understand this may be unsettling for you. I completely understand your concerns.

In some rare cases, during transportation, the adhesive at the top of the Z-axis guide rod may become loose, causing the Z-axis to wobble and produce noises. However, this issue can be resolved by reapplying AB glue to secure it. I’ve also provided a video in the attachment on how to secure the Z-axis guide rod. You can refer to it for guidance.

We recommend using this link to purchase glue. In fact, you can also choose other similar AB adhesives.
Amazon Link
There are a few important considerations to keep in mind when securing the rod:

  1. Move the X-axis to the highest position, and make sure the X-axis is at the top before proceeding with the subsequent operations.

  2. For AB-type glue, discard the first 1-2 cm of the glue before use.

  3. Fill about 1/3 of the hole with glue. This will allow the rod to press the glue into the gap between the shaft and its mounting component, facilitating the rod’s secure fixation.

  4. Reinstall the rod mounting component, paying attention to the direction of installation. The rod mounting component needs to be snapped into the adjacent lead screw bushing.

  5. Preliminary curing takes 2 hours, reaching 80-90% of the performance takes 12 hours. Testing can be conducted after 24 hours.

As our compensation, we will provide you with a roll of PLA Basic filament. You can choose the color you prefer, and we will prioritize arranging it for you based on available stock.

Please tell us what you’re thinking, we look forward to your response and are here to help you.

Best regards,

Bambu Lab Support Team

1 Like

It seems the problem quoted here : https://youtube.com/shorts/Z-ma-NTQQ_w?si=B1PJumjUat217ylQ

Yesterday, I opened the 2 top corners and Z axys seemed stable.

I tightened the chassis screws and the noise stopped.

But I have a new trouble : Layer shift on the x-axis on the same layer (same file)

Thanks