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I would like to mount a computer under a desktop made from particle board, the desktop is 1/2 inch thick, the computer plus mount weighs about 25lbs. Would the particle board hold?

How could I mount the computer to the underside of the desk and ensure it doesn't fall and break?

  • Are you sure the top is only 1/2" thick? Are you estimating or measuring? That's quite thin for a desktop and will be challenging to mount to. – isherwood Oct 23 '18 at 19:10
  • It's 1/2" thick, just verified. – DipreSantana Nov 6 '18 at 14:47
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While there's no problem mounting things to particle board as others have described, 1/2" is just too thin to work with. I would mount another board under your desk using construction or wood glue, at least doubling the current thickness of the top.

After that has set up for a day, I'd mount with 3/4" screws (or longer, depending on final thickness), properly piloted.

I've mounted many things to 3/4" particle board from below, including dual coat hooks that my kids have used for years. 1/2" just doesn't offer enough grab. It's likely that the screws will pull out a layer of material when it all comes crashing down.

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Most of the desks in cubicles and modular furniture are made of particle board and they are able to assemble and mount things with screws, so it should not be a problem. They use special coarse thread screws that are made for particle board.

furniture screw

They make all kinds of under desk mounts - here's one:

under desk mount

The thickness of the material will limit the length of screw you can use; with thin materials, you may need to use more screws for a given task. I'd say as long as you get four screws in, you'll be safe with a 25 pound computer.

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    This sounds good, but I'd add, use the thickest screw your computer mount supports and predrill the holes before screwing. Wrap your drill bit with tape just under 1/2 inch to be sure you don't drill too far. – Gary Bak Oct 23 '18 at 17:38
  • I agree with your answer except that you'd almost never see screws in tension into such thin material. I wouldn't trust it, even with #14 screws. – isherwood Oct 23 '18 at 19:34
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The answers are good ..just in case you still worry, you also can drill through the board and use a screw, big washer and nut to secure. My tip: if your particle board is bigger than the computer, make sure it is supported by a good structure around it, or your board will bend over time.

  • Thanks everyone, I don't feel comfortable screwing the mounts into just the particle board, I'm gonna see if I can use bolts from the top down. The tables have trim that goes over the edges, I'll see if this trim can hide the bolts. – DipreSantana Nov 6 '18 at 14:49

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