PBT vs. ABS Keycaps: Which Material Is Right for You?

Quick Answer

If you want long-lasting keycaps that resist shine and keep their texture, PBT is the better choice. ABS offers a smoother feel and more vibrant colors, but it will develop a glossy shine over time. For most custom keyboard builds, PBT keycaps provide the best balance of durability and typing comfort.

When you're building or upgrading a mechanical keyboard, the choice between PBT and ABS keycaps is one of the most important decisions you'll make. These two plastics dominate the market, but they feel and wear very differently. Understanding their differences helps you pick the set that matches your priorities, whether that's longevity, aesthetics, or budget.

This comparison breaks down the key trade-offs between PBT and ABS, using real examples from the Novelkeys catalog to illustrate what each material can offer. By the end, you'll know which material suits your typing style and maintenance habits.

What Are PBT and ABS Keycaps?

PBT (polybutylene terephthalate) and ABS (acrylonitrile butadiene styrene) are the two most common plastics used for keycaps. PBT is known for its durability and resistance to shine, while ABS is prized for its smooth feel and ability to produce crisp legends. Both have their place, but they behave differently under daily use.

PBT keycaps are generally more textured and slightly rougher to the touch, which many typists appreciate for grip. They also resist the oily shine that develops on frequently used keys. ABS keycaps, on the other hand, start with a smooth, glossy feel and can develop a shiny patina over time. This isn't necessarily a flaw—some users enjoy the worn-in look—but it's a key factor to consider.

• PBT: more resistant to heat and chemicals, less prone to shine
• ABS: softer plastic, easier to mold into complex shapes, often used for doubleshot legends

Durability and Feel: The Core Trade-Off

The biggest difference between PBT and ABS is how they age. PBT keycaps are more resistant to the polishing effect of your fingertips, so they keep their original texture for years. ABS keycaps, while initially smooth and pleasant, will eventually develop a glossy shine on the most-used keys. This is a natural process, not a defect, but it changes the look and feel.

In terms of typing feel, PBT's slight texture provides a dry, grippy surface that some find more stable under the fingers. ABS feels slicker and can be more comfortable for those who prefer a low-friction glide. There's no universally 'better' feel—it's about personal preference. However, if you want a consistent feel over a long period, PBT is the safer bet.

• Test both materials if possible; typing feel is subjective
• Consider your environment: PBT resists UV and heat better than ABS

Sound and Profile Considerations

Keycap material also influences the sound of your keyboard. PBT keycaps tend to produce a deeper, thockier sound because the plastic is denser and absorbs more vibration. ABS keycaps often sound slightly higher-pitched and 'clackier.' The difference is subtle but noticeable, especially on a quiet board.

The profile of the keycaps—how the rows are shaped—affects typing comfort and sound as well. For example, the CYL Shinseiki keycap set from Novelkeys uses the CYL profile, a sculpted shape that many find comfortable for long typing sessions. Whether you choose PBT or ABS, you'll find options in various profiles, so you don't have to compromise on ergonomics.

• If you prefer a deeper sound, PBT is often the better choice
• Profile is independent of material; choose the shape that fits your typing style

Cost and Availability

Price is another practical factor. ABS keycaps are generally cheaper to manufacture, so you'll find many budget-friendly sets. PBT keycaps tend to cost a bit more, but the price gap has narrowed in recent years. For example, the CYL Shinseiki keycap set from Novelkeys is priced at $15.00 (compared to $30.00), offering an affordable entry into PBT keycaps. Similarly, the MTNU Darling keycap set, which uses a different profile, is available for $92.50 (down from $185.00), reflecting the higher cost of more complex manufacturing.

When budgeting, consider that PBT's durability might save you money in the long run, as you won't need to replace shiny ABS keycaps as often. However, if you like to change keycaps frequently, ABS's lower upfront cost might be more appealing.

• Look for sales and discounts to get premium keycaps at a lower price
• Factor in longevity: PBT may cost more initially but last longer

PBT vs. ABS: The Trade-Offs

• Durability vs. Feel: PBT resists shine and retains texture; ABS feels smooth initially but becomes glossy with use. Choose PBT if you want long-term consistency; ABS if you prefer a smooth feel and don't mind shine.
• Sound Profile: PBT tends to sound deeper and thockier; ABS often sounds clackier and higher-pitched. If sound matters, go PBT for a deeper tone; ABS if you prefer a crisper clack.
• Cost and Value: ABS is generally cheaper upfront; PBT may cost more but lasts longer, offering better value over time. Weigh your budget against the long-term investment; PBT can save money in the long run.

Keycap Sets to Consider

• CYL Shinseiki: The CYL Shinseiki keycap set from Novelkeys brings a fresh, contemporary look to your mechanical keyboard. Designed for enthusiasts who appreciate clean aesthetics and reliable performance, this set is a straightforward addition to any build. Offered in the CYL profile, a popular sculpted profile for comfortable typing. Includes keycaps in a variety of sizes to fit standard layouts. Features a sleek, modern colorway. This set is an excellent example of a PBT keycap set that offers both durability and style. The CYL profile ensures comfortable typing, and the modern colorway lets you personalize your board without sacrificing longevity.
• MTNU Darling: The MTNU Darling from Novelkeys is a stylish addition to any keyboard setup, designed to bring a fresh look to your board. This product is part of the Novelkeys lineup, known for quality and attention to detail. Offered under the Novelkeys brand, ensuring consistency with their product family. Available in a standard configuration to suit most users. Features a design that adds visual appeal to your keyboard. The MTNU Darling set showcases how a premium keycap set can elevate your keyboard's aesthetics. While the material isn't specified, Novelkeys' reputation for quality suggests a reliable product. If you prioritize visual appeal and brand consistency, this set is worth considering.

Which Should You Choose?

Best for

• Typists who want keycaps that resist shine and maintain texture over years of use
• Enthusiasts who prefer a deeper, thockier sound and don't mind a slightly rougher feel

Not for

• Users who love the smooth, glossy feel of ABS and don't mind the eventual shine
• Those on a very tight budget, as ABS sets are often cheaper

Choosing between PBT and ABS keycaps ultimately comes down to your priorities. If durability and consistent feel are at the top of your list, PBT is the clear winner. If you prefer a smooth surface and are okay with shine developing over time, ABS can be a great, budget-friendly option. Consider the trade-offs, test different sets when possible, and pick the material that matches your typing habits and aesthetic goals.