Unusual noise that I just noticed

Bambu Lab X Series Bambu Lab X1C
1

My X1c started with a noise today that I haven’t noticed before. The printer is relatively new (bought it during the last big sale) but I have been using it almost daily.
I’ve done the recommended maintenance regularly, since I print mostly ABS/ASA

I took a video (sorry for the poor quality, it is more for the sound), here’s the link https://www.dropbox.com/scl/fi/mrnqpfonm5yob2hvlh7kz/weird_noise.mp4?rlkey=kiwlnlqm5311p62y4jq0tc2cx&st=mzjcpl5l&dl=0

You’ll know which sound, really noticeable about 0:17. Only happens on clockwise circular motion.

Belt tension? The side belts (y) don’t seem as tight as X. it is disturbing, what could it be?

thanks for the help

2

That’s the sound it makes when doing circles, Print a square and you won’t hear it.
It’s normal and nothing at all is wrong or needs to be adjusted.

3

Ok, I’ve printed circles before and never heard that particular sound…

Thanks John,

1 Like
4

Well you didn’t hear it because you were probably distracted. It’s fun when you print a big circular object and shoot it up to sport or ludicrous modes.
Try printing in something with cross hatch or gyroid infil fast. You’ll think your printer will fall apart.

5

Hahaha, those I’ve done, so I know what you mean, although I’ve never used sport or ludicrous yet

I guess it’s the same type of situation as the car you drive… hear an unusual sound and you immediately fear the worst

1 Like
6

Fun fact, there is no X or Y belt. Each belt moves the head diagonally.

7

For circular features, print noise can reflect the STL’s mesh quality. Most slicers approximate circles with many short linear G1 segments (unless arc commands G2/G3 are used). Coarse or inconsistent segmentation adds frequent tiny direction changes, which can make motion sound squeaky or chattery; finer, consistent segments—or fitted arcs—tend to run smoother and quieter.