Understanding Keycap Profiles and Materials
What Is Custom Keycaps Guide
Picking custom keycaps is mostly about profiles, materials, and compatibility. That's it. The rest is noise from community hype. When I first got into keyboard modding around 2018, I bought a set of PBT double-shot keycaps because everyone said they were worth it. They worked fine. Then my second order came in and half the stems didn't fit my switches because I didn't check the stem profile first. That was a $60 lesson. The three most common profiles you'll run into are Cherry, SA, and MX-style. Cherry is the default that comes with most keyboards. It's low, rounded, and consistent. SA is tall and boxy with a different feel entirely. MX is essentially Cherry but with slightly different curvature on a few keys. Most people should stick with Cherry-compatible profiles unless they have a specific reason to go otherwise. Material choice really comes down to PBT versus ABS plastic. PBT is denser, feels rougher, and doesn't shine after months of use. ABS is smoother out of the box but develops that oily shine pretty quickly. The shiny keycaps aren't a performance issue, just an aesthetic one. Some people prefer the look after break-in. I don't, but that's personal preference.
There's also PC (polycarbonate) keycaps now, which are lighter and quieter but more expensive and fragile. I wouldn't recommend them unless you already know what you're doing. For a beginner, PBT is the safer bet. Double-shot construction matters too. It means the legends are made from two layers of plastic fused together rather than printed or laser-etched on top. Double-shot legends won't fade, period. Shot-key or dye-sublimation legends will wear off over time, especially on frequently used keys like W, A, S, D, spacebar, and enter.
Measuring Your Keyboard Before You Buy
Before you order anything, you need to know your switch stem type and your keyboard layout. This is where most people mess up. Most mechanical keyboards use Cherry MX-compatible stems. That means any Cherry-profile keycap will snap right on. Some vintage keyboards use different stems though — Alps, IBM Model M, Topre — and standard keycaps won't fit those at all. I once spent an afternoon trying to mount GMK-style keycaps on an Old English Type writer keyboard. The stems were completely different. I ended up having to return everything. A digital caliper costs about $15 on Amazon and makes this step take thirty seconds instead of guesswork. Measure the stem width and height, compare it to the keycap packaging specs, and move on. Your keyboard layout is the other factor. ANSI and ISO are the main ones. ANSI is the US standard with the rectangular enter key. ISO is European with the L-shaped enter key and extra key to the left of the spacebar. If you have ISO and buy an ANSI keycap set, the spacebar won't match and you'll have a gap. Check your layout before ordering. Some sets come in both variations, some don't. Verify which one you're getting.
Get the Full Details
How Keycap Sets Are Structured
A standard keycap set usually contains 86 to 108 keys, depending on the size. You'll get full-size, tenkeyless, 75 percent, and compact options. The most popular right now are 75 percent and TKL sets. They offer good coverage without the massive number row that most people never touch anyway. The spacebar is where people make mistakes. A standard 6.25u spacebar is the most common, but some keyboards use 6u or even 7u. The 7u spacebar is rare and shows up mostly on older or custom boards. If you have a 7u spacebar and buy a set with only a 6.25u, your spacebar will be too short and leave a gap. Measure your spacebar in unit widths before buying. Some sets include a knob cap for volume knobs, which is nice if your keyboard has one. Others don't. Look at the contents list carefully. A complete set should have at minimum a standard layout with function row, number row, alpha row, modifier keys, and arrow cluster. Anything less is usually a partial set meant to fill a specific gap.
Where to Actually Buy From
The main vendors for custom keycaps are Gateron, Novagames, GMK, and a handful of smaller artisans and factories. GMK keycaps are widely considered the gold standard for quality and color accuracy, but they're also expensive and often have long pre-order queues — sometimes six to twelve months. People wait for them because the plastic and printing quality holds up better than almost anything else. Gateron and Novagames are more accessible. Their PBT sets run between $40 and $80 and ship relatively fast. The quality is decent but not identical to GMK. Colors might shift slightly, and the texture can feel a bit rougher. For most people, this is fine. It's cheaper and you get them in weeks instead of months. Artisan keycaps are individual specialty keys, usually decorative. People put them on the escape key or spacebar for looks. They're fun but not necessary. I have one that I bought for $25 that looks nice but does absolutely nothing functionally. If you're on a budget, skip them. If you want to spend money unnecessarily, go ahead.
Installation and Common Problems
Installing keycaps is straightforward. You pull the old one straight up with a keycap puller. Don't use a knife or screwdriver — you'll scratch the plate or damage the switch stem. A cheap plastic puller works fine. I use a wire puller now. It applies even pressure and doesn't slip. The wire type costs about $5. Once the old keycap is off, line up the new one and press down firmly. It should snap into place. If it feels loose or wobbly, the stem might not be fully seated. Remove it and try again. Don't force it. One issue that comes up occasionally is keycap height inconsistency. Some manufacturers don't maintain tight tolerances, so a couple of keys sit slightly higher or lower than the rest. It's usually barely noticeable, but if you're sensitive to it, read reviews on the specific set before buying. The rarer the manufacturer, the harder it is to find real reviews. That's a red flag.
When Custom Keycaps Aren't Worth It
If your keyboard is under $50 and you're just using it for casual typing or gaming, custom keycaps probably won't change your experience enough to justify the cost. You're looking at $50 to $200 for a full set, and the functional difference from stock keycaps is minimal. The main gains are texture, legend longevity, and aesthetics. If those matter to you, go for it. If not, stick with whatever came with your board. There's also a limit to how much you can improve a keyboard this way. If your switches feel bad or your stabilizers rattle, keycaps won't fix that. Switches and stabilizers are separate concerns entirely. Don't expect keycaps to solve problems they can't solve. I've seen people buy expensive keycaps and then complain their keyboard sounds worse. That's because they removed the sound-dampening foam from underneath while replacing the keycaps and forgot to put it back. Pay attention to what you're doing when you take your keyboard apart. Reassembly matters as much as the parts you choose.
