Reducing noise/vibration  

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steven.simpson
(@steven-simpson)
Active Member

Hello all,

My printer has become quite loud over time. Particularly, the Y axis movement and extruder assembly.

I believe a significant portion of the noise is coming from the part cooling fan shroud, however I am at a loss of how to eliminate that noise. Have any of you had success with silencing it?

Additionally, I believe the Y axis is somehow introducing vibration at higher speeds, but at lower speeds it's quiet. I've lubricated the bearings and it moves smoothly by hand, so I'm unsure what to do in that regard.

Cheers from Canada.

Posted : 17/09/2019 6:23 pm
Scyanix liked
charles.h13
(@charles-h13)
Famed Member

I did several things:

  1. Replaced the feet with the new square ones on the Prusa Store.  
  2. I put it on 18x18" tile that has silicone feet under it.  
  3. I have it in a lack enclosure.
  4. I printed feet for the lack table that allows me to add antivibration pads in them
Posted : 18/09/2019 3:37 am
serge.d and Scyanix liked
Tim
(@tim-m30)
Illustrious Member

Keep bearings well lubricated ... they make a lot of the noise as the axes move.  Y wears a lot more than X, too; and the extra play as the bearings wear add noise, and cause resonances to ring out.  And little things, like the sheet touching the stop screws can buzz quite loudly if the sheet isn't firmly touching them; or the LCD touching the plastic case is another rather loud source.  But in my experience the worst noises came from the filament spool rubbing on the holder: not quite a squeak, but random and loud enough at the prefect pitch to annoy.

ps: I did add rubber dampers between the wall and my print table that reduced vibrations a lot; probably didn't do much for general noise.  

This post was modified 1 year ago by Tim
It is always wise to get more than one opinion......
Posted : 18/09/2019 4:23 am
Scyanix liked
chocki
(@chocki)
Prominent Member

Biggest difference to noise for me was when I put the printer on a granite chopping board, it made a huge difference. Every move was being amplified by the large table top and even transferring into the wooden floor the table was standing on, the granite chopping board has soft squidgy feet and because of the solid mass and soft squidgy feet, it isolates the printer from the table very very effectively.

As a quick test, but only a test, fold a blanket up a few times, ideally place a glass chopping board or other solid surface on this and place the printer on top and move the axes about, see if this silences things enough, if it does, then look at a slab or granite chopping board, and soft squidgy isolation.

Don't run the printer on the blanket for long and never unattended, the fibres and dust will get into your printer, as well as there may be an  increased fire risk.

Normal people believe that if it ain’t broke, don’t fix it. Engineers believe that if it ain’t broke, it doesn’t have enough features yet....
Posted : 18/09/2019 7:28 am
Scyanix liked
charles.h13
(@charles-h13)
Famed Member
Posted by: @chocki

Biggest difference to noise for me was when I put the printer on a granite chopping board, it made a huge difference. Every move was being amplified by the large table top and even transferring into the wooden floor the table was standing on, the granite chopping board has soft squidgy feet and because of the solid mass and soft squidgy feet, it isolates the printer from the table very very effectively.

As a quick test, but only a test, fold a blanket up a few times, ideally place a glass chopping board or other solid surface on this and place the printer on top and move the axes about, see if this silences things enough, if it does, then look at a slab or granite chopping board, and soft squidgy isolation.

Don't run the printer on the blanket for long and never unattended, the fibres and dust will get into your printer, as well as there may be an  increased fire risk.

What type of Granite Chopping board?  Can I see a picture?

Posted : 18/09/2019 11:02 am
chocki
(@chocki)
Prominent Member

https://forum.prusaprinters.org/forum/original-prusa-i3-mk3s-mk3-user-mods-octoprint-enclosures-nozzles-.../best-silencing-accessory-for-printer-granite-chopping-board/#post-159492

But before spending any money, check if it is noise being conducted into a surface or the actual printer.

If your careful you could lift the printer slightly whilst it is printing using the steel frame, and if the noise drops off dramatically, there's your answer, if there is not much difference, then you won't be wasting money on something you may not need.

Normal people believe that if it ain’t broke, don’t fix it. Engineers believe that if it ain’t broke, it doesn’t have enough features yet....
Posted : 18/09/2019 11:26 am
charles.h13
(@charles-h13)
Famed Member

Thanks.  I just wanted to see what you were talking about.  If I buy more printers, I will consider it.  

Posted : 18/09/2019 11:37 am
chocki
(@chocki)
Prominent Member

With the part cooling fan, I do what I have always done with noisy fans of this type of construction, peel the sticker off the back and put one drop of oil on the spindle but make sure it gets behind the plastic clip which holds the impeller shaft in the bushing, you will have to remove the fan and hold it horizontally, but be careful of the wires. I use my usual Singer sewing machine oil. It will become rattly again in due course, so just do the same again. There will come a time where no amount of oil will help, it is just the nature of this type of fan and it will need replacing. They are cheaply made and tolerances are not great and they certainly are not balanced at the factory or anywhere for that matter!.

It does not really help that this board requires a 5v 3 wire type fan as these are not so common.

Normal people believe that if it ain’t broke, don’t fix it. Engineers believe that if it ain’t broke, it doesn’t have enough features yet....
Posted : 18/09/2019 11:56 am
steven.simpson
(@steven-simpson)
Active Member

Thanks for the wonderful replies. I will try all of the suggestions and hope for the best!! Also, the granite cutting board looks quite nice.

Posted : 19/09/2019 1:28 am
Scyanix
(@scyanix)
New Member
Posted by: @chocki

https://forum.prusaprinters.org/forum/original-prusa-i3-mk3s-mk3-user-mods-octoprint-enclosures-nozzles-.../best-silencing-accessory-for-printer-granite-chopping-board/#post-159492

But before spending any money, check if it is noise being conducted into a surface or the actual printer.

If your careful you could lift the printer slightly whilst it is printing using the steel frame, and if the noise drops off dramatically, there's your answer, if there is not much difference, then you won't be wasting money on something you may not need.

I’ve determined my noise is in fact the vibration on the large table my printer is on. Unfortunately, that granite chopping board isn’t available to be shipped to the US currently:

Original UK listing 

And as a slap in the face, there IS a separate US listing for presumably the exact same product... albeit at a MUCH higher price of $75.89 plus and additional $38.76 shipping (total price of $114.65 US). That’s nearly $100 above actual price!

US listing - high price 

I guess I’ll have to find alternatives! Shouldn’t be too hard, I just found this level of price gouging comical.

This post was modified 5 months ago by Scyanix
Posted : 22/04/2020 5:34 am
breadmusgrawe903
(@breadmusgrawe903)
New Member
Posted by: @chocki

With the part cooling fan, I do what I have always done with noisy fans of this type of construction, peel the sticker off the back and put one drop of oil on the spindle but make sure it gets behind the plastic clip which holds the impeller shaft in the bushing, you will have to remove the fan and hold it horizontally, but be careful of the wires. I use my usual Singer sewing machine oil. It will become rattly again in due course, so just do the same again. There will come a time where no amount of oil will help, it is just the nature of this type of fan and it will need replacing. They are cheaply made and tolerances are not great and they certainly are not balanced at the factory or anywhere for that matter!.

It does not really help that this board requires a 5v 3 wire type fan as these are not so common.

That's a good decision for first time, but sometimes it is easier and faster to replace it. 

Posted : 19/06/2020 12:37 pm
joan.t
(@joantabb)
Veteran Member Moderator

I used to  use the Oil filled period to keep me printing while I  ordered a replacement (Well.... that is until I ordered a batch of fans, I have six printers, so will need fans sooner or later whichever way it goes... )  🙂

Joan

 

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK...
Posted : 19/06/2020 2:44 pm
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