You probably put a ton of thought into which switches you use in your mechanical keyboard, but have you given much thought to the keycaps themselves? There’s a good chance your keyboard uses ABS plastic, but that’s not the only option. In fact, you might be better suited by a set of more durable PBT keycaps instead.
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Source : Buy Yourself Some PBT Keycaps and Say Goodbye to Shiny, Greasy Keyboards