Compressed wood table bumping noise


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Old 04-28-15, 04:19 PM
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Question Compressed wood table bumping noise

Hi there,

I've got a compressed wood desk from IKEA, model name is Malm. And I usually type on a computer keyboard a lot on it, but for every character I type the table makes a very annoying bumping sound, like a drum. I guess its something related to the vibrations of my typing on the table's top plank.

My question is, hoe do I stop this sound? I've tried putting a carpet bellow the table and even a thin cork panel on top, but it didn't stop the sound, which makes me believe its because of the top plank, that makes the sound resonate for some how.

Here is the table model, for reference - MALM Desk - birch veneer - IKEA

Can anyone help me please?

Thanks in advance!
 
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Old 04-28-15, 04:21 PM
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Does the desk rock or wobble?
 
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Old 04-28-15, 04:25 PM
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No, its still on the ground. It does this really low sound, like a drum or a bass, when I tap it on the top board with my fingers, which then reproduces to the typing on a keyboard.
 
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Old 04-28-15, 04:45 PM
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Try a rubber mat under the keyboard???
 
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Old 04-28-15, 04:54 PM
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@Keith I have tried a rubber mat under the keyboard, but it somehow allows the vibration of my typing to make the drum noise.
 
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Old 04-28-15, 05:17 PM
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Okay don't laugh but have you tried with your speakers unplugged. Sounds like your computer may be making keystroke sounds. Some setting you didn't even know you changed.
 
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Old 04-28-15, 05:26 PM
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I've no sound on the computer at all, these are some pretty low frequencies, just like a bass coming just from my tapping or bumping on the top part of my table.
 
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Old 04-29-15, 01:45 AM
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Don't those desks have the quick connects. Make sure all the connectors are tight, 1 loose one may cause this
 
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Old 04-29-15, 02:15 AM
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The quick connectors are all really well tight. I'm pretty sure the problem comes from the top plan itself, probably because it's compressed wood.

I noticed that other models made of the same type of wood don't have this issue.

I've got a IKEA Kallax which is made of the same wood, but has a couple of more elements in the structure, and it doesn't make this sound. In the picture bellow I illustrate the shapes of both structures (blue is the desk and red is the Kallax shelf).

Name:  Untitled-1.jpg
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Could it be that missing those vertical planks, makes the sound propagate through the wood, thus creating the sound?
 
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Old 04-29-15, 03:25 AM
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If you think it's a vibration caused by the open span you could glue/screw a 1x under the top to stiffen it up.
 
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Old 04-29-15, 03:40 AM
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I'm sorry, I don't understand what you mean with "glue/screw a 1x under the top". Can you please explain what is a 1x screw?
 
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Old 04-29-15, 03:48 AM
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A 1x piece of wood [1"x2", 1x4, etc] screwed and glued to the underside of the top.
 
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Old 04-29-15, 04:10 AM
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When I tap on the green area of the top plank of the desk, I don't hear the annoying sound, but when I tap on the red area, the sound is well heard. Which makes me believe it is the lack of something bellow the plank, that makes it vibrate and cause those very bassy sounds, like a drum.

Are you suggesting I glue something like the purple plank bellow the top board?
 
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Old 04-29-15, 04:13 AM
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Yes, adding lumber under the unsupported span of the top will stiffen it up, hopefully eliminating the vibration.
 
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Old 04-29-15, 05:15 AM
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Do you recommend any specific kind of wood?
 
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Old 04-29-15, 08:05 AM
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I would think any solid wood would be sufficient.
 
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Old 04-29-15, 08:16 AM
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Would another block of compressed wood work?
 
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Old 04-29-15, 08:37 AM
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Possible but it's better to use solid wood as it's stronger and less apt to sustain any damage that would make it weaker. By solid wood I mean a piece of 1x2 pine [or whatever species] minimum.
 
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Old 04-29-15, 09:46 AM
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Would another block of compressed wood work?
I suspect you mean particleboard. Particleboard is literally limber mill garbage mixed with glue. Adding garbage to garbage might not help.

I'd suggest a piece of " plywood the size of the underside of the desk. Turn the desk upside down on a flat surface such as an un-carpeted floor. Spread an layer of glue such as Titebond, lay the plywood on and put some weight on top till dry.

However if the underside of the desk is unfinished particleboard the glue may not hold. The surface of the particleboard will just pull away. More complex solutions would be needed to get the plywood to hold and would probably look like crap. Bottom line a better quality desk may be the only good solution. Can you return the desk? If so look for one that is not particleboard.
 
 

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