Hum sound when 3D printing ovals/circles
I have a brand new mini and a strange low frequency sounds/noises (they are 2(two) similar sounds) are heard when 3D printing ovals/circles. They could be easily heard in the attached video. Is this normal and what causes them?
<video width="1920" height="1080" controls="controls">
<source src="https://forum.prusa3d.com/wp-content/uploads/2020/09/PrusaMiniHumSound.mp4" type="video/mp4" />
</video>
RE: Hum sound when 3D printing ovals/circles
I can´t play your file - you have to add it into your post using the button "Add Media".
But I think you hear the two stepper motors (x and y axis) which accelerate /deaccelerate and they do this timeshifted, because you print a circle or something curved - and that is normal.
Best regards, Clemens
Mini, i3 MK2.5S, i3 MK4, CClone (Eigenbau)
RE: Hum sound when 3D printing ovals/circles
I do not have the mini, but sounds, sometimes almost musical, are common when doing circles or arcs on 3d printers.
RE: Hum sound when 3D printing ovals/circles
@jsw
How could you play the attached video? Please let me know.
Best regards, Clemens
Mini, i3 MK2.5S, i3 MK4, CClone (Eigenbau)
RE: Hum sound when 3D printing ovals/circles
I did not play the video. The html in the message appears invalid on my machine. My answer was from general experience.
RE: Hum sound when 3D printing ovals/circles
So same way as I did. Because to me the link is broken.
Thanks, best regards, Clemens
Mini, i3 MK2.5S, i3 MK4, CClone (Eigenbau)
RE: Hum sound when 3D printing ovals/circles
I asked the moderator to fix it and did it by adding a media, editied it a few times to fix it but...
Here is it again as a LINK: PrusaMiniHumSound.mp4
RE: Hum sound when 3D printing ovals/circles
put the printer on a solid place (concrete floor) or place the printer on a pavement tile (paver) it sounds like the resonance from the stepper motors onto the wooden desk... (and the paver or ceramic tile will fix that)
Stock MK4S with FW 6.2.6
RE: Hum sound when 3D printing ovals/circles
Let's see if we can solve the problem:
1 Lubricate all non-threaded shafts with prusa grease ... some used silicone grease.
2 place the printer on an absorbent surface, the one used for washing machines, which is found in all large hardware stores.
Underneath put a rigid surface, I have put a terracotta plate and underneath put the 4 absorbent feet that you can download from the site https://www.prusaprinters.org/it/prints/38506-prusa-mini-silencerdampener.
3 reduce the speed, that of prusaslicer is too aggressive for me. I have reduced to 40 mm / s
and displacement at 120 mm / s
printing times are extended by a little but everything runs smoothly on the oil. Try and let me know.