Most keycap sets fit most MX-style keyboards, but two things decide whether a whole set fits: the switch stem (it must be MX-style) and the bottom row (every modifier and the spacebar must come in your board’s sizes). Compact boards add a third: the 1.75u right Shift and 1u right-hand keys most 75% and 65% layouts use. Run the 10-point checklist below against your exact model before you buy.
“Fits most mechanical keyboards” is on nearly every keycap listing, and it’s usually true for the letters. It’s the edges of the board, the bottom row, the right Shift and the odd keys around the arrows, that catch people out. This page gives you a printable checklist to run against your own keyboard, and worked examples showing how the checks play out on real boards. For the spacebar specifically, our spacebar sizes guide shows how to measure one.
First: what “u” means
Key sizes are measured in units (u). One unit is the width of a standard letter key, based on a 19.05 mm key spacing. A Tab key is usually 1.5u, Caps Lock 1.75u, Backspace 2u and a standard spacebar 6.25u. When a listing says a set “includes 1.75u right Shift”, it means a Shift key 1.75 times the width of a letter key.
The 10-point keycap compatibility checklist
Work through it with your keyboard in front of you. Use the Print checklist button to print just this part, or save it as a PDF from the print dialog.
Keycap compatibility checklist
Keyboard model and revision: ______________________ Keycap set: ______________________
☐1. Switch stem: Is it a cross-shaped (MX-style) stem? Most keycap sets only fit MX stems. Topre, Alps, Kailh Choc and other low-profile switches need their own keycaps.
☐2. Switch orientation: Do the switches face north (LED at the top) or south? Some Cherry-profile sets can catch on north-facing switches; check the set’s notes if your board is north-facing.
☐3. Layout standard: ANSI, ISO or JIS? Look at the Enter key and left Shift. An ANSI-only set won’t give you an ISO Enter or a short left Shift.
☐4. Board size: Which keys does your board actually have: F-row, navigation cluster, arrows, numpad? Count them and match against the kit list.
☐5. Bottom row: Write down every bottom-row key size, left to right, and the spacebar length. This is where most sets fail to fit.
☐6. Shift row: Left Shift (2.25u ANSI, 1.25u ISO) and right Shift (2.75u full-size and TKL, 1.75u on most 75% and 65% boards).
☐7. Odd keys: 1u right-hand modifiers, an Fn key, macro keys, a split spacebar, a stepped Caps Lock or a 1.5u Backspace. Make sure the kit includes each one.
☐8. Profile rows: If the set is sculpted (Cherry, OEM, OSA, MT3), check the odd keys come in the row your board needs them on. Uniform profiles (DSA, XDA) avoid this.
☐9. Stabilizers: Does your board use Cherry-style or Costar (wire-clip) stabilizers? Keycaps for Costar boards need clips or inserts on the long keys.
☐10. Clearance: Very tall profiles (SA) can rub against a case lip or a knob on some boards. Check photos of the set on the same board if you can.
Bottom row, left to right (sizes in u): ___ ___ ___ ______ ___ ___ ___ ___ Right Shift: ____u
From clickyboard.com/keycap-compatibility-checklist/
Where to find your keyboard’s exact sizes
The maker’s keycap size chart. Some makers publish one per model (Keychron does, for example, on a “keycap size” page for each board). Make sure it matches your exact model and revision, since sizes can change between versions.
The keycap set’s kit list. Good sets show every key with its size and row. If a listing only shows a render of a full-size board, ask the seller or look for a kit image.
Measure it. Pull a key and measure its width at the base. A 1u keycap is about 18 mm wide, so a 1.25u key is about 23 mm and a 1.5u key about 28 mm. For the spacebar, measure the distance between the outer stabilizer stems, as explained in our spacebar sizes guide.
Worked examples
Here’s how the checklist plays out on four boards. The first two use standard sizes and fit most sets that cover compact layouts. The last two are well-known cases of non-standard bottom rows. Sizes are taken from the maker’s published charts or support forums where available; we flag anything you should still confirm on your own board.
Keyboard (version)
Layout
Bottom row, left to right
Right Shift
What to check
Keychron Q1 Max (ANSI, knob)
75% ANSI
1.25u × 3, 6.25u spacebar, 1u × 3, then 1u arrows
1.75u
Kit must include the 1.75u right Shift, three 1u right modifiers and the 1u keys in the right-hand column. MX stems, south-facing switches
Keychron K2 (Version 2)
75% ANSI
1.25u × 3, 6.25u spacebar, 1u × 3, then 1u arrows
1.75u
Same sizes as the Q1 Max, but the switches face north: some Cherry-profile sets are reported to catch on them, so check the set’s notes
Razer BlackWidow (older series; current V4 models differ)
Most sets include a 6.25u spacebar and 1.25u modifiers, which won’t fit. You need a set with a 6u spacebar and 1.5u modifiers, or replace only the letters and numbers
Corsair K70 RGB (older K70 models)
Full-size ANSI
Non-standard: 6.5u spacebar (about 123 mm); measure each modifier
2.75u
Very few sets include a 6.5u spacebar. Keep the stock bottom row or buy a set that lists your exact model. Newer K70 models may use standard sizes, so check yours
Profile rows in practice: on a sculpted set, the 1.75u right Shift on a 75% board sits on the Shift row, and the right-hand column keys sit on several rows. Better sets include those keys in more than one row, so check the kit image shows the 1u keys you need in the rows you need them. With a uniform profile such as DSA or XDA, every key is the same shape, so any 1u key works anywhere. Our keycap profiles guide explains sculpted and uniform profiles.
The parts of the kit people forget
ISO keys. The tall ISO Enter, the short 1.25u left Shift and the extra key beside it. Many sets sell these as an add-on kit. Our keyboard layouts guide shows how to tell ANSI from ISO.
Novelties and 1u spares. Knob boards, macro keys and Fn keys use 1u caps; a set with extra 1u novelties covers them.
Numpad. Full-size and 96% boards need numpad keys, including a 2u 0 and a 2u + and Enter (or 1u keys on some 96% boards).
Split or short spacebars. Some compact and ergonomic boards use 2.25u + 2.75u split spacebars or a 7u bar on WKL (winkeyless) layouts.
Frequently asked questions
Are keycaps universal?
No. Most keycap sets fit most MX-style switches, but whether a full set fits depends on your layout and key sizes, especially the bottom row, the right Shift and any odd keys. Switches such as Topre, Alps and low-profile Kailh Choc need their own keycaps.
How do I know what size keycaps my keyboard needs?
Check the maker’s keycap size chart for your exact model, or measure your keys. A 1u keycap is about 18 mm wide at the base, a 1.25u key about 23 mm and a 1.5u key about 28 mm. Write down the bottom row and right Shift sizes before you shop.
Will a keycap set fit a 75% or 65% keyboard?
Only if it includes a 1.75u right Shift and enough 1u keys for the right-hand column and bottom-right modifiers. Many full-size sets do not, so look for a set that lists compact-layout support in its kit.
Why don’t keycap sets fit Corsair or Razer keyboards?
Some older Corsair and Razer boards use non-standard bottom rows, such as a 6.5u or 6u spacebar and 1.5u modifiers. Most keycap sets include a 6.25u spacebar and 1.25u modifiers, so the bottom row will not fit. The letters and numbers usually fit fine.
Do keycap profiles affect compatibility?
Profiles do not change whether a keycap fits the switch, but sculpted profiles mould each row differently, so an odd key from the wrong row will sit at the wrong angle. Uniform profiles avoid this. Very tall profiles can also rub against some cases.
Can I use MX keycaps on low-profile switches?
No. Low-profile switches such as Kailh Choc use a different stem and need matching low-profile keycaps. Some low-profile MX-style switches accept MX keycaps, but check the switch maker’s guidance.
Layout details checked on 7 October 2026 against maker pages and support forums. Keyboards change between revisions, so always confirm your exact model.
What Are OEM Keycap Profiles?
OEM (Original Equipment Manufacturer) keycap profiles represent the most widely used keycap shape in the mechanical keyboard world. These keycaps feature a cylindrical shape with a gentle curve that naturally follows the contour of your fingertips, making them the gold standard for both pre-built and custom mechanical keyboards.
The term “OEM” indicates these keycaps are designed as the original standard that most keyboard manufacturers adopt. This widespread adoption makes OEM profiles the most compatible and accessible option for keyboard enthusiasts.
Key Characteristics of OEM Profile
Cylindrical top surface with slight curvature
Medium height (taller than Cherry, shorter than SA)
Row-specific sculpting for optimal finger positioning
Stepped height design from bottom to top rows
Wide compatibility across keyboard layouts
OEM Profile Specifications
Physical Dimensions
Design Features
Sculpting: Each row has a different angle and height to create a natural typing arc
Top Surface: Cylindrical with approximately 1mm depth curve
Wall Thickness: Typically 1.2-1.5mm for durability
Stem: Compatible with Cherry MX and clone switches
Why Choose OEM Profile Keycaps
1. Ergonomic Excellence
The sculpted design of OEM keycaps reduces finger strain during extended typing sessions. The cylindrical curve provides a larger surface area for your fingertips, distributing pressure more evenly than flat profiles.
2. Typing Accuracy
OEM’s row-specific heights create natural finger positioning that reduces typos. Your fingers naturally land in the correct position without conscious effort, improving both speed and accuracy.
3. Universal Compatibility
As the most common profile, OEM keycaps fit 99% of mechanical keyboards without compatibility issues. This makes upgrading simple and worry-free.
4. Balanced Feel
OEM strikes the perfect middle ground between comfort and tactile feedback. It’s not too high (like SA) or too low (like Cherry), making it ideal for both typing and gaming.
5. Cost-Effective Options
Due to widespread manufacturing, OEM keycaps offer the best value for money, with quality sets available at various price points.
ANSI vs ISO: Most OEM sets support ANSI layout standard. ISO-specific keys may require separate purchase. Bottom Row: Verify spacebar size (6.25u is standard) and modifier key sizes match your keyboard.
Installation Guide
Tools Needed
Keycap puller (wire or plastic)
Clean workspace
Soft cloth for cleaning
Step-by-Step Installation
Removing Old Keycaps
Power off your keyboard and disconnect it
Take a photo of your current layout for reference
Use keycap puller to gently remove keys, starting from corners
Work systematically row by row to avoid confusion
Clean the switches with compressed air
Installing OEM Keycaps
Identify row positions using the sculpted design
Start with corner keys (Escape, Enter, Shift)
Press down firmly until you hear/feel the click
Test each key to ensure proper seating
Install spacebar last – align stabilizers carefully
Pro Installation Tips
Row 1: Function keys have the steepest angle
Home row: Row 3 (ASDF) should feel most natural
Spacebar: Ensure even pressure on both sides
Stabilized keys: Check Enter, Shift, and Spacebar movement
Best OEM Keycap Sets
OEM is the cheapest profile to buy into, because the volume manufacturers produce drives prices down. That is good news, but it also means the range includes a lot of sets that look similar and are not. Four things separate a set worth buying from one that will disappoint you.
1. Legend method matters more than price
Doubleshot legends are moulded from a second piece of plastic, so they physically cannot wear off. Dye-sublimated legends are dyed into the plastic and are nearly as durable. Pad-printed legends sit on the surface and will rub away, sometimes within months on the keys you use most.
If a listing does not say which method it uses, assume pad-printed. This single specification separates sets that last years from sets that look shabby by spring.
2. PBT over ABS, usually
PBT resists the shine that develops where your fingers rest, and it has a slightly textured feel. ABS is smoother and often has sharper colours, but it develops a gloss on the most-used keys within months. Our ABS vs PBT guide covers when ABS is still the right call.
3. Check the kit covers your layout
This is where most keycap purchases go wrong. A set built for a full-size board may not include the odd-sized keys a compact layout needs, particularly the right shift and the modifiers beside the arrow keys.
Count the keys on your board and compare against the set’s kit list before ordering. On a 65% or 75% board this check takes two minutes and saves an expensive mistake.
4. Shine-through only if you use RGB
Pudding-style caps have a translucent lower half so lighting glows through. They look striking on an RGB board and slightly odd on one without. If your board has no per-key lighting, a solid set will almost always look better.
💡 The short version: look for doubleshot or dye-sub PBT, confirm the kit covers your bottom row, and only choose shine-through if you actually run RGB. A set meeting those three conditions at a sensible price is a good buy regardless of brand.
Three sets worth buying
HyperX Pudding PBT is the default shine-through set. Translucent lower halves let RGB glow through, the plastic is PBT so it resists shine, and it is priced low enough to be an easy first upgrade. Only worth it if your board actually has per-key lighting.
Ducky PBT Doubleshot is the quality pick. Doubleshot legends cannot wear off because they are moulded from a second piece of plastic, and Ducky’s tolerances are consistently good. This is the set to buy if you want to stop thinking about keycaps.
Akko OEM sets are the ones to look at for colourways. Akko produces far more themed sets than anyone else at this price, they are PBT, and kit coverage for compact layouts is usually better than generic budget sets.
Yes, OEM keycaps work excellently for gaming. Their medium height provides good tactile feedback without being too tall to affect gaming performance. Many professional gamers use OEM profile keyboards.
Can I mix OEM keycaps with other profiles?
While technically possible, mixing profiles creates an inconsistent typing experience. It’s recommended to use a complete OEM set for optimal ergonomics and aesthetics.
Do OEM keycaps work on low-profile keyboards?
No, standard OEM keycaps are designed for regular mechanical switches. Low-profile keyboards require specific low-profile keycaps.
How long do OEM keycaps last?
High-quality OEM keycaps can last 5-10 years with regular use. The lifespan depends on material quality, usage intensity, and maintenance.
Are expensive OEM keycaps worth it?
Premium OEM keycaps offer better materials, more durable legends, and superior manufacturing quality. For heavy users, the investment is worthwhile for longevity and feel.
Can I get custom OEM keycaps made?
Yes, several manufacturers offer custom OEM keycap services. Signature Plastics, WASD, and other companies provide custom printing and molding services.
Do OEM keycaps affect typing speed?
Most users maintain or improve their typing speed with OEM keycaps due to the ergonomic design and familiar feel. The sculpted rows help with finger positioning.
What’s the difference between ABS and PBT OEM keycaps?
OEM keycap profiles represent the perfect balance of ergonomics, compatibility, and accessibility in the mechanical keyboard world. Their widespread adoption, comfortable typing experience, and universal compatibility make them an excellent choice for both beginners and experienced enthusiasts.
Whether you’re upgrading your first mechanical keyboard or building a custom setup, OEM profile keycaps provide a reliable foundation that enhances your typing experience without requiring an adjustment period.
The sculpted design, proven ergonomics, and extensive availability make OEM keycaps a smart investment for anyone serious about their mechanical keyboard setup.
ABS and PBT are the two plastics almost every keycap set is made from, and the one you pick changes how your keyboard feels, sounds, and ages. Get it right and a set lasts years looking new. Get it wrong and your most-used keys go greasy and shiny within months. Here is the short version, then the detail that actually matters when you are choosing a set.
⚡ Quick answer
Buy PBT if you want keycaps that stay matte, resist the greasy shine that develops with use, and give a deeper sound. It is the better daily driver and the default pick for most people. Buy ABS if you want the brightest colours, the best RGB shine-through, or the lowest price, and you do not mind the tops polishing to a gloss over time. Neither is strictly better; they suit different priorities.
What ABS and PBT actually are
Both are just plastics. ABS (acrylonitrile butadiene styrene) is the cheaper, softer, more common one, easy to mould in bright colours and used on most stock keycaps. PBT (polybutylene terephthalate) is harder, denser, and more heat-resistant, which makes it more durable and gives it a slightly textured surface. That single difference in hardness drives almost everything below: how they feel, how they wear, and how they sound.
ABS vs PBT at a glance
ABS
PBT
Feel when new
Smooth, slightly slick
Lightly textured, grippy
Over time
Develops a glossy shine
Stays matte for years
Sound
Brighter, higher-pitched
Deeper, more muted (thock)
Durability
Good
Better
Colour & RGB
Vivid, great shine-through
More muted, less vivid
Price
Cheaper
Roughly 20 to 50% more
Best for
Bright themes, RGB builds, budgets
Long-term daily drivers
How they feel, and the shine problem
Fresh out of the box, ABS keycaps feel smooth and a little slick, almost glassy. PBT feels slightly textured, closer to very fine sandpaper, which gives your fingers more grip. That difference is subtle when both sets are new.
The gap opens up with use. ABS is softer, so the oils and friction from your fingers gradually polish the most-used keys into a glossy shine. Some people like that broken-in look; many do not, because it shows up first and worst on the keys you touch most, like WASD and the spacebar. PBT is harder and far more resistant, so it holds its even matte texture for years. If shine is the thing you are trying to avoid, PBT is the answer.
How they sound
Keycap material changes the sound of every keystroke. PBT is denser and dampens vibration, so it tends to sound deeper and more muted, the thock enthusiasts chase. ABS is a touch more resonant, giving a brighter, clackier sound that some gamers and typists genuinely prefer. Neither is right or wrong. Listen to both samples below and pick the profile you like.
PBT keycap typing sound
ABS keycap typing sound
Durability and cost
PBT wins on longevity. It resists wear, holds its texture, and shrugs off the UV fading and yellowing that can affect ABS left in sunlight. It also stands up better to the oils and cleaning agents a keyboard meets over its life. ABS is still perfectly durable for normal use; it just shows its age sooner, mostly through shine.
That quality costs more. PBT sets usually run 20 to 50% above a comparable ABS set, because the material is pricier and harder to mould cleanly. If you keep a keyboard for years, that premium often pays for itself by outlasting a cheaper set you would otherwise replace. If you swap keycaps often or are on a tight budget, ABS gives you good quality for less.
Double-shot vs dye-sub legends
How the letters are made matters as much as the plastic, because cheap printed legends wear off. There are two good methods. Double-shot keycaps mould the legend as a separate piece of plastic fused into the cap, so it physically cannot fade, and it works on both ABS and PBT. Dye-sublimation dyes the legend into the surface of a PBT cap, which lasts almost as well but cannot print a light legend on a dark cap. Avoid pad-printed or laser-etched legends on any set you plan to keep, since those are the ones that rub away. Double-shot PBT is the durability gold standard.
Colour, RGB, and shine-through
ABS takes bright, saturated colour better and is the go-to for vivid or translucent shine-through keycaps that show off RGB backlighting. If a colourful, glowing board is the goal, ABS is usually the better fit. PBT colours tend to look more muted and its denser plastic diffuses backlight rather than beaming it through, though PBT holds its colour longer without fading. Shine-through PBT exists but is less common and less bright than shine-through ABS.
Can you fix or prevent ABS shine?
Partly. Once ABS has shined, you can knock the gloss back with a fibreglass scratch pen or very fine sanding, worked gently and evenly so you do not create bald patches. It is fiddly and the shine returns with use, so treat it as a touch-up rather than a cure. Prevention works better: wash your hands before long sessions, keep the board out of direct sun, and wipe the caps down now and then. But if shine genuinely bothers you, the real fix is buying PBT in the first place.
Which should you buy?
Buy PBT if you type for hours daily, keep keyboards long-term, hate keycap shine, or want a deeper sound. This covers most people, which is why PBT is our default pick.
Buy ABS if you want the brightest colours or the best RGB shine-through, you change keycaps often, or price is the deciding factor.
Either is fine if you are new to the hobby and just want a solid set. Both feel great when matched well to your switches and board.
Keycaps are only one part of the picture. How they sound and feel also depends on your keyboard, switches, and case, so think about the whole build, not just the plastic. Curious about making your own caps? See our guide to 3D printed keycaps.
Frequently asked questions
Is PBT always better than ABS?
No. PBT is more durable and stays matte, which suits most people, but ABS takes bright colours and RGB shine-through better and costs less. The right choice depends on your priorities, not on one being universally better.
Why do my ABS keycaps look shiny?
ABS is a softer plastic, so friction and skin oils gradually polish the surface of your most-used keys into a gloss. It is normal and does not affect function, but it is the main reason people move to PBT.
Do PBT keycaps really sound better?
PBT tends to sound deeper and more muted because it is denser, while ABS sounds brighter and clackier. Better is personal. Listen to the two samples above and choose the one you prefer.
Are PBT keycaps worth the extra money?
For a long-term daily keyboard, usually yes, since they outlast ABS and keep their look. If you change keycaps often or are on a budget, a good double-shot ABS set is still a smart buy.
How can I tell if keycaps are ABS or PBT?
Check the product listing first, since reputable sellers state the material. By feel, PBT is slightly textured and matte while ABS is smoother and glossier. PBT also tends to sound a little deeper when tapped.
Which lasts longer, ABS or PBT?
PBT. It resists shine, wear, fading, and yellowing better than ABS, so it keeps its new look for years. ABS is durable enough for normal use but shows its age sooner, mainly through shine on the most-used keys.
3D printed keycaps sound like the ultimate customisation: design anything, print it, type on it. The reality is more useful once you drop the hype. For one-off artisan and novelty caps, printing is genuinely great. For replacing a full set that feels and lasts like the injection-moulded keycaps on your board, it still falls short. Here is an honest look at what works, what does not, and how to get a decent result if you try it.
⚡ Quick answer
3D printing is best for single artisan or novelty keycaps, especially on a resin (SLA) printer, which gives the smooth surface and fine detail a keycap needs. It is a poor choice for a full daily-use set: FDM layer lines feel rough, resin is brittle and yellows in sunlight, and hitting the Cherry MX stem tolerance reliably is hard. Print the fun Escape or novelty caps; buy PBT for the keys you actually pound all day.
Do 3D printed keycaps actually work?
Yes, with a big caveat: it depends what you are printing and why. A single sculptural Escape key or a themed novelty cap is a perfect project. You print it once, post-process it, and it sits on the board as a centrepiece where the odd rough edge does not matter.
A full set is a different story. To match a store-bought set you need a consistent surface, a precise Cherry MX stem on every cap, and durability that survives years of finger oils and pounding. Home printing struggles with all three at once. Most people who set out to print a whole set end up printing a handful of accent caps and buying the rest. That is not a failure, it is the sensible use of the technology.
FDM vs SLA vs SLS: which printer
The printer type matters more than anything else for keycaps, because a keycap is small, detailed, and touched constantly. Here is the short version.
Method
Surface
Stem detail
Best for
FDM (filament)
Visible layer lines
Fiddly, often needs cleanup
Chunky novelty caps, cheap testing
SLA (resin)
Smooth, injection-like
Sharp and accurate
Artisan caps, fine detail
SLS (powder)
Fine matte finish
Excellent
Pro service-bureau runs
For keycaps specifically, resin (SLA) is the one to use. Cheap resin printers now cost about the same as a decent FDM machine, and the smooth surface and crisp stem are exactly what a keycap needs. FDM is fine for a blocky novelty cap you will sand, but its layer lines and softer stem detail make it a frustrating choice for anything you want to feel good under the finger. SLS is superb but realistically means paying a service bureau.
Materials, honestly
PLA (FDM): easiest to print, but soft and low heat resistance. Fine for a display cap, poor for daily use, since it wears and can deform in a hot car or sunny window.
PETG (FDM): the pick if you want an FDM cap you will actually type on. Tougher than PLA, more heat-resistant, and available in clear for backlighting.
ABS (FDM): closest to a real keycap and can be vapour-smoothed glass-smooth, but it warps easily and needs an enclosure to print well.
Resin (SLA): the smoothest, most detailed result, and the best match for artisan caps. The catch is that most resins are brittle and yellow under UV, so a resin cap is more fragile and less lightfast than PBT.
What 3D printed keycaps are good for (and not)
✅ Great for
One-off artisan and novelty caps
Sculptural Escape, Enter, or spacebar centrepieces
Prototyping a custom profile or ergonomic shape
Odd sizes a keycap set does not include
Learning and experimenting cheaply
❌ Not great for
A full daily-driver set
Matching injection-moulded smoothness cheaply
Crisp, durable legends without extra work
Long-term wear and UV resistance (resin)
Fast turnaround on many caps
How to get a decent result
If you are printing your own, a few things make the difference between a cap you use and one that goes in a drawer.
Get the stem right first. The Cherry MX cross stem is the make-or-break detail. Print a test cap and check it clicks onto a switch snugly without splitting. On resin, a slightly hollowed stem prints cleaner; on FDM, expect to clean it with a hobby knife.
Orient for the top surface. Print the cap top-down (stem up) so the face you touch is the smoothest, support-free surface.
Keep walls at least 1.2mm. Thin walls crack at the stem under daily pounding. A little extra thickness is worth the weight.
Post-process the face. Sand FDM caps up through 400, 800, then 1200 grit, or vapour-smooth ABS. Resin caps mostly just need a clean and a UV cure.
Add legends deliberately. A filament change (or a resin printer with a pause) lets you print the legend as a second colour so it never wears off. Painted-in recessed legends are the low-tech alternative.
What it actually costs
The material is nearly free: a single cap uses cents of filament or resin. The real cost is the printer and your time. An entry resin or FDM printer runs roughly $150 to $300, and each cap takes 30 to 90 minutes to print plus design and cleanup time. That maths only works for one-offs and small runs. For a full 100-key set, a store-bought PBT set is cheaper, faster, and more durable than printing your own, so print the accents and buy the base.
No printer? Get them made
You do not need to own a printer. Etsy and dedicated artisan makers sell resin-printed novelty caps, and services like Shapeways or a local print shop will produce a design you upload. For free designs to start from, Thingiverse, Printables, and MyMiniFactory all have keycap collections. If you would rather buy a normal set, our keycap profile guide and ABS vs PBT guide cover what to look for.
Frequently asked questions
Are 3D printed keycaps any good?
For single artisan or novelty caps, yes, especially printed in resin, which gives a smooth surface and sharp detail. For a full daily-use set they are worse than a store-bought PBT set: rougher, less durable, and slower to make. Print the fun caps, buy the everyday ones.
Should I use FDM or resin for keycaps?
Resin (SLA). A keycap is small and touched constantly, so the smooth surface and accurate Cherry MX stem that resin produces matter more than FDM’s material variety. Use FDM only for chunky novelty caps you plan to sand.
Do 3D printed keycaps fit normal switches?
They do if you print the standard Cherry MX cross stem accurately. Getting that stem right is the trickiest part of the whole job, so always print one test cap and confirm it clicks on snugly before committing to a batch.
How durable are 3D printed keycaps?
Less durable than injection-moulded PBT. PLA is soft and heat-sensitive, PETG and ABS hold up better, and resin looks best but is brittle and yellows under UV. Thicker walls and a protective coating help, but none quite match a bought set for daily abuse.
Can I print legends that will not wear off?
Yes. Print the legend as a second colour using a filament change or a printer pause, so the letter is part of the cap rather than printed on top. Painted-in recessed legends are a simpler alternative that also resists wear.
Every keycap has three shape decisions built into it: how tall it is, whether all the rows are the same height, and what the top surface does to your fingertip. Those three things together are what people mean by a keycap profile, and they change how a keyboard feels and sounds more than most people expect before they try a second set.
This guide covers every profile you are likely to encounter, what each one is actually like to use, and how to pick one without buying three sets to find out.
⚡ Quick answer: for a first upgrade, buy Cherry. It is low, sculpted, available in every colourway and needs no adaptation. Pick SA or MT3 if you want something tall and dramatic and will accept a week of adjusting. Pick XDA or DSA if you want a flat set whose keys you can rearrange freely.
Height. How far the top of the cap sits above the board. Taller caps put your fingers further from the case and give the keyboard a bigger internal air chamber, which is why height affects sound as well as feel.
Sculpt. A sculpted profile gives each row its own height and angle, so the number row leans back towards you and the bottom row leans forward. The rows are not interchangeable. A uniform profile makes every key identical, so any cap fits any position and you can rearrange the whole set.
Top surface. A cylindrical top curves in one direction only, front to back, forming a shallow trough. A spherical top curves in every direction, forming a dish. Spherical dishes cradle the fingertip and feel more locating; cylindrical tops let the finger slide between keys more easily, which is why fast gaming setups tend to prefer them.
Side profiles: how each shape sits on the board
The easiest way to see the difference between profiles is from the side. The diagram below shows four keys from each profile, from the number row at the back to the bottom row at the front. On a sculpted profile each row has its own height and angle, so together they form a gentle curve. On a uniform profile every key is identical, so the row is flat.
Original Clickyboard diagram. Relative heights and angles only: published row heights differ between manufacturers.
Two things to notice. Height changes how far your fingers travel and how much air sits under each cap, which is why tall profiles sound deeper. And the sculpt is what lets you feel which row you are on without looking, which is why uniform profiles take a few days of adjustment if you are used to a sculpted set.
Every major profile compared
Profile
Sculpt
Top
Height
Sound
Adjusting
Best for
OEM
Sculpted
Cylindrical
Medium
Neutral
None
Whatever came on your board
Cherry
Sculpted
Cylindrical
Low
Slightly higher pitched
None
First upgrade, typing, gaming
SA
Sculpted
Spherical
Very tall
Deep and loud
1 to 2 weeks
Retro looks, dramatic sound
DSA
Uniform
Spherical
Low
Bright, clacky
A few days
Ortholinear, 40%, macropads
XDA
Uniform
Spherical
Medium
Fuller than DSA
A few days
Cheap uniform sets, colourways
MT3
Sculpted
Deep spherical
Tall
Deep, muted
1 to 3 weeks
Long typing sessions
KAM
Uniform
Spherical
Tall
Deep
About a week
Tall caps without the sculpt
Choc
Uniform
Flat-ish
Very low
Thin, sharp
Immediate
Low-profile boards only
Published row heights vary between manufacturers and between production runs, so treat height as a class rather than a fixed figure. The ordering above is consistent across every maker.
OEM: the one you already own
Before the enthusiast profiles, it is worth starting with the one almost everybody already has. OEM is the default profile fitted to the overwhelming majority of prebuilt mechanical keyboards, and unless you have deliberately bought a keycap set, it is what is on your board right now.
It is sculpted, with a cylindrical top, and it sits slightly taller than Cherry with a more upright front face. That extra height is the main practical difference between the two, and it is why a Cherry set feels noticeably lower to type on when you switch.
OEM matters for two reasons beyond ubiquity. It is the cheapest profile to buy into, because volume drives the price down, and it is the reference point everything else gets described against: if you are unsure whether you want something taller or flatter, OEM is the middle you are comparing to.
We cover it in full, including row heights, compatibility and the best sets to buy, in our dedicated OEM keycap profile guide.
Cherry: the safe default
Cherry profile was designed by Cherry for its own boards and has since become the standard the enthusiast market builds around. It is sculpted and cylindrical like OEM, but a little lower on every row, with a flatter front face.
That lower height is the whole appeal. Your wrists sit closer to the desk, you can often type without a wrist rest, and the shorter travel between the top of the cap and the switch makes the board feel quicker. Because it is sculpted, your fingers still get positional feedback from the row angles, so there is essentially no adaptation period coming from OEM.
The practical argument for Cherry is availability. Nearly every group buy and every in-stock vendor set is offered in Cherry, which means comprehensive kits for odd layouts, spare novelties, and easy replacement if you break a cap. If you have a 65%, an Alice board or anything with a non-standard bottom row, Cherry is the profile most likely to have the keys you need. Check with our keycap compatibility checklist before you order.
The downsides are mild. Short walls mean less acoustic body than a tall profile, so Cherry sets sound a little higher pitched and a little thinner. And it is so common that it does not make a board look distinctive.
SA: tall, spherical and loud
SA is the tall, retro-looking profile, originally from Signature Plastics and modelled on the spherical caps used on 1970s terminals and typewriters. It is heavily sculpted, with a deep spherical dish and thick walls, and is traditionally moulded in ABS.
It is the most dramatic profile to type on. The dish locates each fingertip firmly, the rows are separated by a lot of height, and the sheer size of the cap gives a big internal air volume. That volume is why SA sounds the way it does: deep, resonant and loud, with a distinctive hollow character that people either love or find obnoxious.
Living with it takes commitment. The height means you almost certainly want a wrist rest, the caps are heavy enough to be noticeable when the board is moved, and the adjustment period is real: expect a week or two before you stop misfiring on the bottom row. On compact boards with tight key spacing it can feel cramped, because the tall walls sit closer together at the top than the plate does.
Uniform variants exist, usually sold as SA R3, where every row uses the home-row shape. That gets you the height and the sound without the sculpt.
DSA: flat, uniform and rearrangeable
DSA is the low uniform profile, also from Signature Plastics. Every key is the same shape and height with a shallow spherical dish, so any cap fits any position on the board.
That single property drives most of its use. If you run an ortholinear board, a split ergonomic layout, a 40%, a macropad, or a non-QWERTY layout like Colemak or Dvorak, DSA lets you place keys wherever they need to go without hunting for a matching row. It is also why DSA sets tend to be cheaper per key: manufacturers only need one mould.
Typing on it is a different experience from anything sculpted. With no row heights to feel for, your fingers lose the positional cues they were using, and touch typists usually overshoot the number row for the first few days. Once that passes, most people find it comfortable, and the low height is easy on the wrists.
DSA sets are commonly PBT, which combined with the low height gives a bright, clacky sound with little resonance. If you want a quiet, high-pitched board it works well; if you are chasing depth it is the wrong profile.
XDA: the middle of the uniform group
XDA is uniform and spherical like DSA, but taller with a wider, flatter top surface. The larger landing area is the main functional difference, and it is the reason some people find XDA more forgiving than DSA when they first move away from sculpted caps.
The extra height also adds body to the sound. XDA sits between DSA and the tall profiles: fuller and lower pitched than DSA, nowhere near SA. Combined with wide availability from budget vendors and an enormous range of colourways, that makes it the easiest uniform profile to buy into cheaply.
The trade-off is that the wide, near-flat top reduces the locating effect of the dish, so it gives you less feedback about where your finger has landed than either DSA or a sculpted profile.
MT3: deeply scooped and polarising
MT3 is Drop’s profile, designed by Matteo Spinelli and modelled on old DEC and IBM terminal keycaps. It is tall, aggressively sculpted, and has by far the deepest spherical dish of any common profile, with high walls surrounding each key.
The feel is unlike anything else. Your fingertips sit down inside each cap rather than on top of it, and the walls physically guide them back to centre. For slow, deliberate typing that is genuinely comfortable, and it is the profile most often recommended by people who type all day and care about fatigue.
It is also the profile people most often bounce off. The same walls that centre your fingers get in the way when you want to slide between keys, which makes it a poor fit for gaming and for anyone with a fast, light typing style. Adjustment takes longer than any other profile, commonly one to three weeks.
Sound is deep and comparatively muted. The caps are thick, so you get the low pitch of a tall profile without the hollow ring that SA is known for.
KAM: tall without the sculpt
KAM comes from Keyreative and answers a specific question: what if you want SA’s height and sound but the freedom of a uniform set? It is uniform, spherical, and considerably taller than XDA.
The result keeps the deep sound that comes from a large cap volume while letting you rearrange keys freely, which makes it a good match for ergonomic and ortholinear boards that would otherwise be stuck with low profiles. The catch is that tall plus uniform means your fingers stretch further to the top row than they would on a sculpted set of the same height, so the number row can feel like a reach.
Low profile: check the stem, not the name
Low-profile boards are the one place where profile compatibility can fail outright, and the reason is the stem rather than the shape.
Kailh Choc switches use a completely different stem: two rectangular posts instead of a single MX cross. No standard keycap fits, no adapter makes it fit, and you must buy caps sold specifically for Choc. Choc also uses tighter key spacing than MX, so even the footprint differs.
Other low-profile switches, such as Cherry MX Low Profile, use their own shorter stems and need keycaps made for them, even where the stem looks cross-shaped. A full-height cap would defeat the purpose of a low-profile board anyway. Check the switch maker’s keycap guidance before you buy.
💡 Before you buy anything: confirm your switches use an MX cross stem. Almost every mechanical keyboard sold today does, which is why profile is usually the only question. Choc, Topre and older proprietary switches are the exceptions, and on those the profile name tells you nothing about whether a set will fit. For layout and key-size fit, use our keycap compatibility checklist.
Enough to hear clearly, but less than the case, the plate and whether the board has foam in it. Two things about the cap matter.
Internal volume. A taller cap encloses more air, and more air means a lower resonant pitch. This is the main reason SA and MT3 sound deep and DSA sounds bright, and it holds regardless of what the cap is made of.
Wall thickness. Thin walls flex and ring on impact, adding a hollow, plasticky component to the sound. Thick walls damp that out. This is where profile and material overlap, since the profiles known for thick walls are also the ones usually moulded in thick ABS.
Row labels: reading R1 to R4 on a kit list
Sculpted keycap sets label each key with the row shape it was moulded for, usually R1 to R4. The label tells you which shape the key has, not which row of your keyboard it must go on, and a key in the wrong row sits at the wrong angle. Cherry-profile sets, the most common kind, use this convention:
Original Clickyboard diagram of the common Cherry-profile row convention.
Row label
Keyboard rows it’s used for (Cherry profile)
Example keys
R1
Function row and number row
Esc, F1–F12, 1–0, Backspace
R2
Top letter row
Tab, Q–P, backslash
R3
Home row
Caps Lock, A–L, Enter
R4
Shift row and bottom row
Shift, Z–M, Ctrl, Alt, spacebar
Other profiles number their rows differently. SA is the main example: in Signature Plastics’ SA family the spacebar row uses the row 3 shape, and rows 2 and 4 share the same shape. Uniform profiles such as DSA and XDA have only one shape, so the labels stop mattering. Always check the kit image rather than assuming a convention.
Worked example: a 75% board with a Cherry-profile set. The extra 1u keys down the right-hand side sit on different rows, so they need different shapes. The key beside Backspace needs an R1 cap, the key beside the backslash an R2, the key beside Enter an R3, and the key beside the 1.75u right Shift an R4 (and that 1.75u Shift itself must be an R4 key). Many kits include spare 1u keys in only one or two rows, so check that the kit image shows the shapes you need. Our keycap compatibility checklist walks through the rest of the kit.
Profile and material are separate choices
Choosing a shape does not settle the plastic. If you are comparing durability, surface texture or shine, read our ABS versus PBT keycaps guide alongside this profile comparison.
This page is about shape. Material is the plastic, and the two are independent, and you can get almost any profile in either of the two common plastics, so decide them separately rather than assuming a profile commits you to a material.
Briefly: ABS is smoother, produces a deeper sound, and develops a shine where your fingers land, usually within months of daily use. PBT is more textured, sounds higher pitched, and resists shine almost indefinitely. Our ABS vs PBT guide covers the legend printing methods and durability differences in detail.
Which profile should you buy?
Your first keycap set: Cherry. No adaptation, widest availability, and it will teach you whether you want something taller or flatter next.
Gaming, especially fast lateral movement: Cherry or OEM. Low, sculpted and cylindrical, so your fingers slide between keys instead of climbing walls.
Ortholinear, split or a custom layout: DSA or XDA. Uniform is not a preference here, it is a requirement if you want keys in arbitrary positions.
You want the board to look and sound dramatic: SA. Nothing else has the same presence, and the sound is the reason most people buy it.
Eight hours of typing a day: MT3 if you will commit to the adjustment period, Cherry if you would rather not think about it.
A 40% board or a macropad: DSA. Cheap, uniform, and the low height suits boards where you are already using layers rather than reaching.
A low-profile board: work out the stem type first, then buy whatever fits it.
Adapting to a new profile
The mistake people make is switching back and forth. If you install a tall or uniform set, keep it on for at least a week of normal use. Alternating between two profiles keeps resetting the muscle memory you are trying to build, and the frustration is what makes people conclude a profile is bad when they have simply not finished learning it.
Expect the errors to cluster in two places. The bottom row, because your thumb and little finger travel furthest and are least precise, and the number row, because on a uniform set there is no height change telling you that you have reached the top. Both settle within days once you stop looking down.
Frequently asked questions
Can I mix different profiles on one keyboard?
Physically yes, and one combination is common: a uniform alpha set with a sculpted function row, or SA R3 uniform keys mixed into a sculpted set. Mixing profiles of different heights across the main alphas is a different matter, because the height jumps break the finger positioning both profiles were designed around.
Will any profile fit my switches?
If your switches use the standard MX cross stem, which nearly all do, then yes, profile has no bearing on whether a cap fits. The exceptions are Kailh Choc, Topre and a few proprietary designs, which use their own stems and need caps made for them.
Which profile is most comfortable for long typing sessions?
MT3 if you are willing to adapt to it, because the deep dish and high walls hold your fingers in position and reduce the small corrections you make all day. Cherry is the answer if you want comfort without an adjustment period, since its low height keeps your wrists flat.
How long does it take to get used to a new profile?
Moving between similar profiles such as OEM to Cherry takes no time at all. Sculpted to uniform, such as Cherry to XDA, takes a few days. The big jumps, Cherry to SA or to MT3, commonly take one to three weeks of daily use.
What is the difference between cylindrical and spherical tops?
Cylindrical tops curve in one direction only, forming a trough that runs left to right, so your finger can slide along it. Spherical tops curve in every direction, forming a dish that cups the fingertip and resists sliding. Spherical feels more locating, cylindrical feels faster.
Are expensive keycap sets actually better?
Price mostly buys thicker walls, tighter moulding tolerances and better legend printing, all of which you can feel and hear. What it does not buy is a better profile for you specifically. A cheap set in the right profile will suit you more than an expensive set in the wrong one, which is a good argument for trying a budget set in an unfamiliar profile before committing.
