Noise - resonation of y cariage
Well, MK3s+ could be really near silent, the most audible being the extruder fan. Stealth mode has no value, it makes no change, just disable colision detection. Trouble is, that y cariage resonates, especially with z axis movements. That makes the printer VERY noisy and proly affect also precission as the vibration seem to be over 0.1mm. It also increases probability of failed nylon prints requiring them to use more magnets and glue. Whenever I tighten the bearing screws, noise goes off and the printer is nearly soundless...for a day or two. Tigtening means recalibration is mandatory for precission, so I calibrate every other day.
I wondered whether I can easily add more bearings, which would proly solve the trouble - but that would mean making my own carriage, not just drill a few holes. Thus this way is not the one to go as first attempt. Source is proly the autocalibration at every print as it hits one bearing to find the Y axis end, making torque load which moves the screws a tiny bit with every hit. The noise begins exactly at begining of print during autocalibration.
Any thoughts, advice?
My opinion may not be right, but regret having so bad and right one too often.My models are things you can't see on any shelve. I create things that don't exist and that should be the…
RE: Noise - resonation of y cariage
Be sure it's your actual printer vibrating and not just resonant frequencies being picked up by whatever surface the printer is sitting on. A quick test is to put the printer on a solid surface such as your floor and see if the noise is reduced.
If the printer is still noisy even on a solid surface, be sure everything is tight. The printer is normally nearly silent. I fall asleep on the couch next to mine often.
If the solid surface does reduce noise, Stefan of CNC Kitchen has videos on this topic that are well worth watching:
Key points are:
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The trick to reducing printer mechanical noise is to increase mass.
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Mounting the printer on a heavy surface such as a 17x17 inch paver stone adds mass.
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Acoustically coupling the printer to the mass maximizes the vibration dampening effect.Do not isolate the printer from the base. Felt non-isolating feet work well.
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De-couple the printer mass from the resonating surfaces. Isolating foam or Sorbothane feet work well to keep any remaining vibration from being transmitted into the flat supporting surfaces.
I've got some notes and pics showing how I did this here. There are lots of variations using marble cutting boards and other more attractive options.
and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan
RE: Noise - resonation of y cariage
@bobstro Thanks for the videos, seem interresting. Yeah, I assembled a dissassembled most of mechanical parts already. Z axis three times as I thought it was source of the noise.
I have the printer placed on heavy duty rubber plate that sits under our big multihead embroidery machines. Putting it on flat hard surface increases the noise slightly as it does not absorb anything.
As I wrote, it is nearly silent, most noise come from extruder fan (I mostly print from not cooled materials like nylon, so not this one). But after a few prints, the Y carriage starts vibrating with every move, and very loudly with Z axis moves, stealth have no big impact. Tightening two screws of left far bearing makes it silent again. Phone support at Prusa advised screw fixer which I am currently seeking and shall see if it help.
My opinion may not be right, but regret having so bad and right one too often.My models are things you can't see on any shelve. I create things that don't exist and that should be the…
RE: Noise - resonation of y cariage
OK, going another way, complete remake of y axis. Just wondering whether try Tarus, which is a heavy change or just a few minor changes, especially making the calibration hit the center and not the bearing - which is clearly the biggest pain of the original design, it seems as most common topic of y axis on all the forums. So my trouble is nothing exotic. I thought that Y axis is most problematic part when i assembled the printer about a month ago and my guess was correct.
Currently printing juiced hotor holder with endstop + tensioning idler and looking for solid one piece belt holder, maybe I will design my own. And I will try to completely redesign the bearings setup to hold the carriage on more than 3 points. There are even printed spiral bearings that should work cool in nylon. So I will try those and see.
My opinion may not be right, but regret having so bad and right one too often.My models are things you can't see on any shelve. I create things that don't exist and that should be the…
RE: Noise - resonation of y cariage
Do yourself a favor and print out a set of Squash Ball feet. You'll be amazed how much noise you let through. A flat rubber pad doesn't dampen much noise (tested and verified) - the surface area is too large so a lot of resonation is transmitted. Squash balls (get the 2 yellow dot kind) are very squishy, have liquid in them that dampens vibration further and reduce the contact patch to a very small area.
RE: Noise - resonation of y cariage
@dan-rogers Please tell me how would these minimize resonation of y carriage. It seems to me that most of silencing projects here are only compensating bad asseblies as the printer is nearly silent when assembled well (my skew is under 1/4 of tollerance for great). Ok, yeah most printers say printing is loud. They also say that you cant print from anything but PLA and PETG, they say you cant print high objects, you cant print big objects, etc. I filled big part of the space ending 2mm under top a few times, I print no warp objects from asa and nylons. Most printers in fact dont care about whats happening there (no knowledge of physics or chemistry) and only fix the symptoms instead of curing and there is nothing to hush with such feet on well assembled piece.
As I wrote the printer is nearly silent (I have to look at it to check whether it is done or not, it is not hearable for a few meters in the room when speed set under 70) exactly until cca 5th calibration that loosens screws in carriage, then it is so loud, that you can hear it thru massive wall. I have printed some pieces from few projects and need a day to play with it. Thinking about printed carriage as it would loose a lot of dead weight the motor has to carry - nylon can easily do that forever
My opinion may not be right, but regret having so bad and right one too often.My models are things you can't see on any shelve. I create things that don't exist and that should be the…
RE: Noise - resonation of y cariage
It's up to you whether you try something that prevents vibration from moving through your printer feet to the table/surface underneath. In my experience 99% of the noise (even after your screws loosen back up) is not the printer - but the surface it sits on amplifying the noise that does transmit through. Squash ball feet are IMO way better than a foam pad because they not only have liquid in them (two yellow dot) that helps with the dampening, but the surface area to the underlying table/cabinet etc is reduced. A big flat foam pad has nearly zero impact on transmitted noise because it's surface area is so large.
Putting your printer in an enclosure will INCREASE the noise transmitted to the underlying surface - the big box is an echo chamber. I ended up putting squash balls under my enclosure to reduce it's own contribution to resonance transmission, and not have two layers of squash balls in play.
I prefer my Y bed to float - not be so darned tightened down that it introduced drag. If I press on mine, it wobbles - but it is worn into a groove in my drylins and it prints quiet and true. Same with my X - if I try and get bearing lash eliminated, I get print defects, layer shifting and noise. The drylins are seated by gravity - and I am getting flawless prints even though I can wiggle the extruder body on the X axis rods if I feel like seeing how much play has evolved.
The only axis I have motor noise at all on is Z - and I choose not to chase that down - because I am getting flawless prints and I only hear the Z noise when i am transversing up or down - way more than what happens between layers.
Noise is what I was helping you eliminate - noise transmission at that - since I did the Moon's motor upgrade though and switched to drylins, my printer is nearly silent except on fast moves.