hThe new machine I just bought has this kind of sound from the beginning of operation, which is very noticeable when printing at low speed.Although it does not affect the printing quality at present, I am concerned that there may be issues that may affect the printing quality after the warranty period expires.I want to know what is causing this noise and how can I eliminate it
Quite odd. It sounds like its happening when the belt(s) reverse.
Have you upgraded the FW lately?
It won’t hurt to run the printer vibration calibration again.
See if that helps.
Thank you for your suggestion. After the firmware upgrade, I have performed three calibrations. After careful observation, I found that there is a noise when the extruder is being pulled back and loaded back, which should be related to the extruder. However, the machine is brand new and should not be due to gear wear
I would check the bowden tube on top of the toolhead.
Make sure it is pushed in all the way. I would even remove it and check the tube end to make sure it is cut square. Then push it back into the toolhead.
The fitting on top could also be broken, this would not be the first one. Everytime there is a retraction it has to hold firm for good results.
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If the advice above still doesn’t resolve your issue…
I would suggest a test print with the part fan turned completely off and see if you can pinpoint, by ear, where the source of the sound is coming from.
That should help lead you to where the issue might be.
It can be certain that the noise must come from the extraction and release of the extruder
Yup, it might be this with a combination of the bowden tube hitting the top glass when a retraction happens.
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I have removed the top cover, but the noise still exists
Have you checked the bowden tube connection as @Barryg41 suggested?
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Yes, I have also checked and there are no abnormalities
After dismantling the extruder, I found a layer of black oil stains on the gears, and there is a slight gap between the extruder gears.The gears are not fully engaged. I am a novice. Is this a normal phenomenon?
Do you have the extruder tensioning spring and screw installed?
Seen here in this video @ 1:48
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It seems that they have retooled their extruder gears if we go by your pic, where Bambu is now using helical gears like the aftermarket set from Fysetc.
For my P1S that I got late last year (November) the teeth on the extruder (for both the hardened steel replacement that I got as well as the stainless steel set that is included) are straight:
You can also see this in the assembly video linked earlier.
No, the gears shouldn’t have that much slack, but it could also be because you are holding it down with something rather soft.
Yes, both the spring and screw are installed correctly, and the screw has been tightened to the tightest position
I HAVE THE SAME PROBLEM NEW PRINTER , and it does this from the start.
this is new problem
A bit old thread, but did you get it figured out? I have one week old P1S and it making the same noise
I’m with @JonRaymond , the click sounds like the PTFE tube hitting, but not the glass, the right side frame.
Went down this rabbit hole during a long print. Kept hearing a click or similar. Stood there watching and noticed it happened on movement towards the right side.
Turns out the PTFE tube was hitting the printer on any move that direction. Pulled the tube to lessen the slack in it (not too tight) and problem solved.
Yes it sounds like the extruder, no it’s not.
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