ABS vs. PBT Keycaps: The Ultimate Acoustic and Texture Guide for Beginners

If you are new to the world of custom mechanical keyboards, you’ve likely run across two acronyms: ABS and PBT. While they might just sound like chemical jargon, the material you choose changes everything about how your keyboard feels and sounds.

Most standard, pre-built office keyboards use ABS plastic. ABS is cheap to manufacture, but it has a major flaw: over time, the oils from your fingers wear it down, resulting in an oily, greasy-looking "shine" on your keys. Acoustically, ABS tends to produce a higher-pitched, hollow click.

PBT keycaps, on the other hand, are the premium standard for workspace enthusiasts. PBT is a dense, durable thermoplastic that resists shine, maintaining a satisfying, matte, textured finish even after years of heavy typing. More importantly for your workspace environment, thick PBT plastic deepens the acoustics of your board, absorbing high-pitched rattle and delivering that deep, satisfying "thocky" acoustic profile that turns typing into an absolute joy.