This site is reader supported and contains links to affiliates, who at no cost to you, I may earn a commission from if you purchase something. Disclaimers.
Want to build a DIY keyboard tray? But not sure what drawer slides to use, what height to make it or how to have a professional looking tray when done?
First, I understand the challenges of adding onto your existing desk.
In fact, it’s tempting to give up and just buy a pre-built tray like the easy to attach VIVO Clamp-on Tray
But, this is a fun and rewarding DIY project that just about anyone can build.
Not sure if you’ll be able to find all the parts and pieces? We’ll help you with that in this DIY keyboard tray guide:
- Supplies needed ($20-40 depending on access to wood)
- 4 steps to building a tray
- Tricks and tips for measuring and installing
And, if after all of that, if you’d prefer to just purchase a ready to go keyboard tray we’ll show you a couple of options.
First Up: Having the Right Keyboard Tray Supplies
In order to tackle a DIY drawer slide tray you’ll need to have the following on hand:
- A pair of top mount drawer slides
- Plywood or pre-finished melamine shelf
- Screws for attaching to the desk underside
- Wrist rest (Optional)
- Stain and sealant (Optional)
- Edge banding for melamine shelves (Optional)
Tools Needed
- Hand saw or miter saw
- Measuring tape
- Cordless screwdriver
4 Steps to Building a DIY Keyboard Tray
These are the basic steps to build a DIY keyboard tray:
- Determining the size of the tray
- Building the keyboard tray and mounting brackets
- Finishing the keyboard tray
- Installation tips and tricks
Step 1 - Determining the size of the Keyboard tray
There are two things to consider in this step:
- The minimum usable size of the tray
- The maximum area you’ll have to install (including side clearance for the slides)
Determining the tray width under an open area desk
If your tray won’t mount between two vertical surfaces you’ll have the freedom of picking the width of keyboard tray you’d like. And while most purchased trays are between 21-25″ (50-65cm) you can best determine your width by laying out your keyboard and mouse on a flat surface.
After a bit of playing around and finding the maximum space you’ll need for moving the mouse (without picking it up!) you’ll have the width down.
Lastly, if you have under 25″ of space you might need to consider a factory tray with extending mouse pad*.
Measuring keyboard tray width when mounting between two vertical sides
While it will be easier to install, if your keyboard tray fits between two vertical spaces you’ll need to accommodate side mount drawer slides in your measurements.
What’s special about the drawer slide width?
Well, almost all side mount drawer slides require a 1/2″ on each side for clearance. So if your opening is 24-1/2″ you’ll need to plan the finished width of your DIY keyboard tray at 23-1/2″.
Determine keyboard tray Width and Depth
At this point you should have your trays drawer slides selected. The depth of the keyboard tray should allow the full keyboard to be accessible when the slides are extended.
So what should you watch out for? A few things:
- For partial extension slides you’ll want to make sure they extend enough for all areas of the keyboard to be accessed.
- And with full extension slides deduct the depth the drawer slides be mounted behind the front of the desk from the slide length.
Lastly, the minimum depth of the keyboard tray should then be the overall depth of the keyboard PLUS 3″ for a padded wrist wrest*.
Top Keyboard Trays [Amazon]
Last update on 2020-08-08 at 10:03 / Affiliate links / Images from Amazon Product Advertising API
Step #2 - Building the keyboard tray
At the simplest, this step can involve cutting your plywood to width and length, sanding the edges and proceeding.
But there are a few ways to make the finished tray look better:
- For slide-out shelves a great way to conceal the plywood edge is with either stick-on edge banding* or by wrapping the plywood with a 1/2″ x 1″ (or thicker) piece of solid wood
- Then, use a router to round-over the wood edge for comfort
If your tools don’t include a table saw, then edge banding is the way to go.
Step #3 - Applying finish to the tray
With any keyboard tray you’ll want to apply a finish to avoid the wood from soaking up oils from your hands. And to make the mouse move smoother over the surface.
My recommendation? Check out one of the finishes in our guide to clear wood finishes (I prefer General Finishes wipe on). You’ll have a smooth finish in hours with no messy brushes.
Step #4 - Installing the tray
When you’re working with cabinets and furniture it’s always worth asking “whats the worst that can happen”.
And the worst that can happen with this step of the project is poking a screw through the top of your future desk.
So, to avoid this happening the first step is planning how you’ll mount the keyboard tray and the screws you’ll need. Not sure how thick the top is? One trick is pulling the desk away from the wall to review the top edge.
And unless it’s an extremely low quality desk the top should be at least 1/2″ thick.
Side mount drawer slide installation
If you’ll be mounting the keyboard tray between two vertical surfaces you’ll be using side mount slides. While easier, in my opinion, to install than a top mount slide you’ll want to consider:
- Find the height of the top of the keyboard tray in relation to the top of the drawer slide.
- If handy, a drawer slide jig will be worth it’s cost (but not just for this type of drawer alone) if you are doing other remodeling projects
- Mark the height of the slides and attach using supplied screws
Top mount drawer slide installation
If it’s possible, the easiest way to install a DIY keyboard tray to an existing surface is by turning it upside down. Literally.
By doing this you’ll have gravity working with you and not against you as you install and screw the slides to the underneath of the desk or table.
If that’s not an option, here’s a few tricks:
- Fully assemble the keyboard tray and slides.
- Then lift the assembly under the surface and mark with pencil or masking tape the location of the top mounts
- Make any height adjustments as you do this step (as top mounts are adjustable)
- Then disassemble the tray and install the slides
DIY Keyboard Tray Purchasing Guide
1. Find the Right Keyboard Tray Slides
If you’re building your keyboard tray, this top mount slide will make the job much easier…
Choosing Keyboard Tray Slides
If you need a custom size then a pair of top mount drawer slides will give you the flexibility to design your own keyboard tray. The only drawback? Besides a little more time constructing the tray you’ll need to purchase a wrist rest.
Key considerations:
- If you are hanging a tray in an open space where you won’t have two cabinet sides, then top mount slides are your best bet.
- But, if you are installing between two desk sides, for a higher quality slide consider a soft closing full extension slide.
Keyboard Slide Purchasing Guide
When it comes to choosing a slide, there are a few options to consider:
- Top mount for installing in open spaces: 14-inch Hardware Resources Top Mount Slides
- Soft close for installing between cabinet sides: 14-inch Vadania Side Mount Soft Close
2. Speed Up the Build With A Pre-Made Keyboard Tray
If you’re building your keyboard tray, this top mount slide will make the job much easier…
Buying a Pre-made Tray
If you haven’t ventured to the lumberyard yet you might be surprised at the cost of a professional-looking piece of 3/4″ plywood or melamine.
And then add in needing to buy edge banding.
To speed-up your build you can purchase a ready-made tray material and, paired with drawer slides, build your own tray quickly and inexpensively.
Keyboard Slide Purchasing Guide
Keyboard tray material:
- Melamine tray: Black keyboard tray base
- Edge banding: Birch edge banding (available in many other colors and wood types)
3. Or, Let's Skip the Build and Buy a Keyboard Tray...
Simple screw-on solution for a high quality keyboard tray
Adding a under your desk is simple with this kit that requires just a few screws.
For standard desks and height adjustable desks this sliding tray will attach easily. Due to a tilt-adjustable +6-degrees to a -22-degree tilt it will bring ergonomic comfort as well.
Key features:
- Swivels left-to-right for fit in corners
- Tilts up/down for ergonomic adjustment
- Integrated polyurethane cushion for comfort
- Ample room for a mouse
- Dimensions of 25″ wide by 9.8″ deep
4. Choosing A Factory Keyboard Tray for Glass Tops
Simple clamp-on tray when screwing to the surface isn’t an option
For a glass top desk a simple clamp-on tray will give you a drawer tray in just seconds.
And, this will also work for a wood top, kitchen tables and any other surface with a lip to hold the clamps. All with no need to use screws.
Key benefits:
- Fits up to 1.5″ thick material
- Sliding tray
- Room for a mouse and keyboard
The only caution is this unit is overall 32.5″ wide and requires adequate mounting space.
Frequently Asked Questions
How do you make a sliding keyboard tray?
A keyboard tray can be made using top mount drawer slides and a home-made tray bottom.
How do I install a keyboard tray?
A keyboard tray is typically screwed into the bottom of a wood desk using #8 screws that are 1/2″ or 5/8″ long.
What is the best under desk keyboard tray?
The key features of a keyboard tray are adjustable tilt, left-to-right swivel and an integrated wrist rest for ergonomics.
Drawer Slide Series
Choosing and installing drawer slides takes planning. Follow our series for more guides, tools and techniques to complete your project:
