I went to mount a keyboard tray underneath my desk, and discovered that the desktop was hollow (despite what the sales guy said... Guess I should have trusted my instincts).

The desktop piece is a hair over 3/4" thick.

The tray is intended to mount with 3/4" long screws (these don't quite break the surface when the mounting bracket is factored in), but there isn't enough material inside the shell of the desk for the screws to grip on to.

Looking online, the best I could find was someone with a different type of desk finding some studs inside the desktop. I'm in the process of getting my hands on a stud finder to check on this, but for now I'm assuming it won't be an option.

A friend suggested pushing a bolt down from the top of the desk, with a washer above the desk to help distribute the weight. I'm okay with the bolts disturbing the surface of the desktop (it'd be outside my work area), but I'm not sure of the aesthetics. I'd also like some idea of how well this would work before drilling more holes in the desk.

An ideal solution would be something that I could insert into the interior space of the desk for the original mounting screws to attach to. But I'm not sure that such a thing exists, or that it would work in this case.

I'm also open to other suggestions.

Note: Apologies for not including a photo. I just wasn't sure what to take a photo of. If there's anything that needs clarification in the above, please let me know.

2 Answers 2


There is usually some structure around the perimeter of hollow panels. You could either:

  • span the distance with 3/4 material (1x3 or 4) front to back, where you could glue and screw. You can then install the tray to the "runners". You could miter a third piece to make it look a bit more attractive (end-grain-haters)
  • Span the underside with a piece of plywood glued up. Even 1/2" ply has a lot of screw holding power. Attach tray as above.
  • Sounds promising! This leaves me with some questions: 1. Do I need to glue the pieces of wood to any particular part of the desk (i.e. the edges)? 2. What type of glue do you recommend? 3. The exterior of the desk is not actual wood, but some kind of vinyl or laminate. Does this need to be removed? And if so, how?
    – AaronSieb
    Feb 27, 2013 at 20:53
  • The glue is to stabilize any screws placed around the perimeter(for holding the wood up). I like polyurethane adhesives that are in tubes you "gun". The polyurethane sticks to almost everything, including your skin, so wear disposable gloves or cleanup with mineral spirits
    – HerrBag
    Feb 27, 2013 at 20:59

Here is how I have mounted under a desk. See pictures:

enter image description here

enter image description here

  • Welcome Barbara! You have posted something which is much more like a comment than an answer, but you posted it as an answer. Glad you are finding the site to have useful content! Dec 14, 2018 at 16:28

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.