How to Build Your Own Mechanical Keyboard

A store-bought keyboard is a compromise: someone else chose the switches, the keycaps, and the layout. Building your own mechanical keyboard removes every one of those compromises.

The best part is that a first keyboard build is genuinely beginner-friendly. With a hot-swap board there is no soldering at all: switches press into sockets, keycaps press onto switches, and the whole project takes about an hour.

Table of Contents

Pick a Layout First

Your layout decides how many keys your board has, and it is the hardest thing to change later:

60% (61 keys): Letters, numbers, and modifiers only. No arrow keys, no function row, no number pad. Tiny and portable, but everything else lives on a function layer.
65% (67-68 keys): A 60% board plus arrow keys and a few extras like Delete. The sweet spot for most first builds.
75% (82-84 keys): Adds a function row while staying compact. Great if you use F-keys regularly.
TKL / Tenkeyless (87 keys): A full keyboard minus the number pad.
Full-size (104-108 keys): Everything, including the number pad.

For a first build, a 65% or 75% board is the best bet. They are compact enough to feel like a real upgrade, they keep the keys most people actually use, and their keycap sets are easy to find.

Hot-Swap vs Soldered: The One Decision That Matters Most

A hot-swap PCB has sockets that switches press into. You can install, remove, and swap switches with your fingers — no soldering iron, no risk of damaging the board, and you can change your mind about switches any time.

A soldered PCB requires you to solder every switch pin to the board. It is cheaper and the connection is permanent, but it turns a one-hour build into a multi-hour project, and fixing a mistake means desoldering.

For your first build, buy hot-swap. The small price premium is worth it. If you try soldering on a later build, our guide to how to solder electronics covers the technique, and the desoldering guide covers fixing mistakes.

Choosing Switches

Switches are where most of the feel and sound of your keyboard comes from. They fall into three families:

Linear: Smooth travel from top to bottom with no bump. Popular for gaming and fast typing. Examples: Cherry MX Red, Gateron Yellow, Akko Rosewood.
Tactile: A small bump partway down the press that tells your finger the key registered. The most popular choice for typing. Examples: Cherry MX Brown, Gateron Brown, Boba U4T.
Clicky: A tactile bump plus an audible click on every press. Fun and satisfying, but loud — your coworkers and family will have opinions. Examples: Cherry MX Blue, Kailh Box White.

Switches also differ in actuation force (how hard you press, usually 45g to 65g) and travel distance (usually 4mm total, 2mm to actuate). Lighter switches (45-50g) feel effortless; heavier ones (60g+) feel deliberate and resist accidental presses.

If you are unsure, buy a switch tester first — a small board with 8 to 12 different switches you can press before committing. They cost about $10 to $20 and save you from buying 70 switches you end up hating.

Keycaps: The Part You Touch

Keycaps change the look, the sound, and the feel of your board more than any other single part. Two things matter most:

Material. ABS plastic keycaps are smooth and slightly shiny, and common on cheaper sets. They develop a polished shine with use. PBT plastic is harder, slightly textured, and resists shine — it feels better and lasts longer. For a first build, PBT is the safer buy.

Profile. This is the shape and height of the caps:

OEM: The tall, sculpted shape on most prebuilt keyboards. Familiar and comfortable.
Cherry: Slightly shorter than OEM, also sculpted. The most popular profile in the hobby.
XDA: Uniform height across all rows, flat tops. Clean-looking and easy to move between rows.

Keycap sets are sold by layout compatibility, so make sure the set you buy covers your layout — a 60% set will not include a number pad. Most sets list exactly which layouts they fit.

The Rest of the Parts List

Here is everything you need for a typical 65% hot-swap build, with rough prices:

Barebones keyboard kit (case + PCB + plate + stabilizers): $50 to $120. Kits like the Keychron V-series, Akko MOD series, or GMMK Pro bundle the hard parts together and guarantee everything fits.
Switches (70 for a 65% board): $25 to $50 for a set of 70. Budget linears and tactiles are excellent now — you do not need to spend $1 per switch.
Keycap set: $30 to $80 for a good PBT set. Double-shot PBT (legends molded in, never wear off) is worth the small premium.
Switch puller and keycap puller: Usually included with the kit. If not, about $5.
Lubricant (optional but recommended): Krytox 205g0 or Tribosys 3203, about $10 for a small tub. Used on stabilizers at minimum.

Total for a solid first build: roughly $110 to $200 before shipping. That buys a keyboard that genuinely competes with $200-plus prebuilt boards, and you can upgrade it piece by piece later.

Step 1: Prepare the Stabilizers

Stabilizers are the single biggest difference between a keyboard that sounds good and one that rattles. Do this step properly and the rest of the build is easy:

Take the stabilizers out of the kit and identify the wire, the housings, and the stems.
Put a thin coat of lubricant on the wire ends and a dab inside each housing where the stem slides. A little goes a long way — too much lube feels mushy.
Clip the stabilizer housings into the PCB. They should snap in firmly; if they are screw-in stabilizers, use the included screws.
Press each stabilizer stem and listen: it should move smoothly with no ticking or rattling. If it rattles, add a tiny bit more lube to the wire.

This takes about 15 minutes and is worth every second. A rattly spacebar is the most common complaint about first builds, and it is almost always fixed here.

Step 2: Install the Switches

With the stabilizers in place, the switches go in:

If your kit has a plate, seat the plate on the PCB first and make sure the stabilizer wires clear it.
Take a switch and line up its pins with the hot-swap socket. The two metal pins go into the socket holes; the plastic alignment pins (if any) go into their own holes.
Press the switch straight down with firm, even pressure until it clicks into the plate. Do not force it at an angle — bent pins are the most common build mistake, and a bent pin means that key will not register.
Work row by row. After each row, flip the board over and check from the back that no pins are bent or poking out at an angle.

If a switch feels loose or a key does not register later, pull it out with the switch puller, straighten the pins gently with your fingers, and re-seat it.

Step 3: Test Before You Add Keycaps

Before the keycaps go on, plug the board into your computer and test every switch. Open a keyboard tester website or a text editor, press every switch one by one, and confirm each one registers.

If a key is dead, pull that switch, check the pins, and re-seat it. Nine times out of ten this fixes it. If it still does not work, try a known-good switch in that socket: if the good switch works, the original switch is faulty; if it does not, the socket may need attention.

Testing now saves you from pulling keycaps off later to reach a bad switch.

Step 4: Add Keycaps and Firmware

Keycaps press straight onto the switch stems. Match each cap to its legend — most sets include a layout diagram — and press down evenly until each cap seats. Start with the big keys (spacebar, Enter, Shift) so the stabilizers are loaded correctly, then fill in the rest.

Then set up your firmware. Most modern kits run QMK or VIA. VIA is a web app that lets you remap keys, set up layers, and change lighting without touching code — if your board supports it, use it. QMK is the underlying firmware; QMK-only boards can be configured through the QMK Configurator website.

At minimum, set up one function layer: hold a key (often Caps Lock or the right-side key) and get arrow keys, volume controls, and media keys. This is what makes a compact 65% board feel like a full keyboard.

Tuning: Making a Good Board Great

Once your board works, a few cheap tweaks make a big difference:

Foam: A layer of case foam under the PCB kills hollow echo. Plate foam between the plate and PCB deepens the sound. Try one at a time and listen.
Tape mod: A few strips of masking tape on the back of the PCB add a satisfying deep pop to each keypress. It costs nothing and takes two minutes.
Switch lubing: Lubing every switch makes them smoother and quieter. It is a couple of hours of fiddly work, so save it for a weekend — or skip it entirely on your first build.

Troubleshooting Common Problems

A key does not register: Bent switch pin. Pull the switch, straighten the pins, re-seat.
Spacebar or Enter rattles: Stabilizer needs more lube on the wire ends, or the wire is not seated in the housing.
Keys feel scratchy: Normal for new budget switches. They smooth out after a week or two of use.
Board is not detected: Try a different USB cable (some cables are charge-only and carry no data) and a different port.
Keycaps do not fit: Check the profile and layout compatibility. A set made for a different layout may be missing keys you need.
The board sounds hollow: Add case foam. An empty aluminum or plastic case acts like a drum.

Frequently Asked Questions

How long does a first build take?

About one to two hours for a hot-swap board, including stabilizer lubing and testing. Add another hour if you decide to lube all the switches.

Is building cheaper than buying prebuilt?

Usually, yes. A $150 build competes with $200-plus prebuilt boards, and you get exactly the switches and keycaps you want. The real savings come later: upgrading one part at a time instead of buying a whole new keyboard.

Do I need to know how to solder?

Not for a hot-swap build. Soldering only enters the picture if you choose a soldered PCB or want to modify a board later.

What if I pick the wrong switches?

That is the beauty of hot-swap: pull them out and put different ones in. Switches hold their resale value well in the hobby community, so a wrong pick costs you a few dollars at most.

The Bottom Line

A custom mechanical keyboard is one of the most satisfying DIY electronics projects because you use the result every single day. Start with a hot-swap barebones kit in a 65% or 75% layout, spend your time choosing switches you actually like, lube the stabilizers, and test before you add keycaps. Your first board will not be perfect — no one’s is — but it will be yours, and every part of it can be changed. That is the whole point.

How to Build Your Own Mechanical Keyboard: A Beginner’s Guide