Resonance noise while x and y movement
Hello,
my MK3S became noisy after not printing for 3 month.
The Only new thing is that I put it in an enclosure that may resonate a little bit.
Is this an Issue that needs attention?
The noise in the video is not so deep as in real live.
The noise seems to only occur when the x and y Axis dos move simultaneously.
The Printer is bedded on a stone slap and the Stone slap is bedded on a piece of foam.
Enclosure creates it's own resonance ...
I found that a foam slab provides way too much surface area and transmits resonance much more than a set of squash ball feet. When I added my printer to an enclosure - the noise that my squash ball feet had eliminated seemingly "came back" - it was from the large walls of the enclosure - vibrating and amplifying what resonance was left.
To compensate, I put a set of squash balls (5 of them) under my enclosure - to keep them from rolling I cut the balls so they have a flat top. Of course that lets the air out - but it did the trick for me.
RE: Resonance noise while x and y movement
First I should test for resonances.
It seems that the Resonance only occurs when the print head moves from left to bottom right.
I think i put up some small test prints and and take a print inside the enclosure and outside.
If the noise is a resonance phenomena then changing the mass of the walls by gluing some Heavy Foam on will be a solution.
Second thought its a room mode.
In that case some fractured surface may help.
Yikes, but sure.
Go for it big guy.
RE: Resonance noise while x and y movement
So I tested a bit without the enclosure.
I Also made videos of but the sound is not rely recognizable. the frequency is very low around 120Hz.
It depends on the Speed and the combination of the movement of different axis in combination.
If X and Y moves together the noise is more prominent.
Due to the approximate 120Hz frequency is it possible that it is caused by the tooth spacing of the belts?
The noise is loudest occur on the movements of the inner perimeters (45mm/s).
Its a 2GT Belt with a 2mm Spacing. frequency should be aprox. 22.5Hz: 45mm*s^-1*2mm=22.5Hz
Seems its not the belts and the pullys.
When you want to talk about stopping the noise stop back here...
We'll wait. Hint - Squash Balls that have two yellow dots. Hint 2. Sorbothane
RE: Resonance noise while x and y movement
The printer alredy rests on a slap of marble (concrete is not god enough for my printer!^^ and its thinner and easier to clean.) and under the marble i put some squishy foam.