Thank you for your message, I have got the problem somewhat under control.
Bambu lab wrote me this in response.
Based on the video, the noise only occurs at specific locations. Since most 3D models are composed of triangular faces, the arcs within the 3D model are converted into curves consisting of numerous short, straight-line segments in the STL file. When printing at high speeds, many transient pulse signals are generated at the corners of these line segments, resulting in noise and vibrations.
However, this noise is unlikely to significantly affect the lifespan of the equipment, so you can disregard it or alleviate it by adjusting the arc fitting resolution. Bambu Studio supports G2/G3 arc motion, which generates arc motion paths within a specific tolerance range. Adjusting the resolution (precision) allows you to fit more arc sections and reduce the noise at certain arc positions.
Enable Arc Fitting, and change the resolution. I use a resolution of 0.006 (half of the stock value). This can impact print times a little, but also makes for better looking circles and arcs especially on smaller prints.
Stop using .STL files and use .STEP files instead. If you creating your own models, export them as .STEP files instead of .STL files. You gain a much higher resolution model, with true arcs instead of the triangular mesh that an STL creates. This gives you much smoother prints and helps to quiet the motor noise down even further.
My P1P has been doing this after a couple of weeks out of the box. Just reached out to Support, well see what they say. Only difference here is that my P1P makes this noise with consistent directional changes in the X-axis and not when printing circles.
Will be cleaning the rods and rebuild the tool head to tighten all the screws.
My brotherâs P1P does no such noise when printing the same file.
That is backwards though: You need to lower the resolution == increase that default of 0.012, in order to get more Arc fitting. So 0.006 would make for less arc fitting. If you want to halve the resolution you need to double the value to 0.024. Also when you do it that way, print time shouldnât be impacted.
Just did some 10mm circles today and the noise my X1C made really scared me, it did not sound normal at all. Reading the posts here it seems a split of some people having the noise issue and others not.
I noticed tonight that after adjusting some of my acceleration speeds, it actually made this issue much better.
I took my normal accel. to 12000 while tweaking a custom filament print settings and the âcircle noiseâ is almost completely gone now.
I have the same issue with my new A1, the first thing I printed was the benchy on the SD card and that printed fine. The next print the noise started. On my printer it sounds like something is vibrating when its doing the circkels and you can feel it if you touch the machine or the surface it is standing on.
As @the_Raz said
It is probably due to a lot of small straight lines, instead of an actual curve. So, changing the Arc Fitting Resolution up to 0.2. That would smooth out the small straight lines
Hope this helps, had the same issue because my stl model wasnât high enough in resolution
I tried a lot of different settings and its basically gone, I actually had two problems, the first was that my nozzle was rubbing against the outer wall which probably caused the extreme vibrations. I was printing âouter/innerâ which for some reason doesnât work for my printer so now im printing âinner/outerâ. And then the circle noise, that was solved by saving my files as .STEP files instead of .STL as someone above mentioned. Also changing the arc fitting setting to 0.001, I found that smaller values worked better in my case but use what works for you.
Interesting, it should be the other way round but you are the second person saying this. I think Iâll try some âextremesâ for verifying. Perhaps like printing some pretty low-poly circle with default resolution and then with something really high such as 0.25 mm or 0.5 mm.