Keycaps are one of the most visible and customizable aspects of a mechanical keyboard. They come in a wide variety of materials, colors, and shapes, allowing users to create a keyboard that's uniquely their own. In this article, we'll explore the different types of keycaps available on the market today.

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ABS
ABS (acrylonitrile-butadiene-styrene) is a common type of plastic used for keycaps. It's relatively inexpensive, lightweight, and easy to mold, making it a popular choice for manufacturers. However, ABS keycaps can develop a shiny, greasy appearance over time, and are more prone to wear and fading than other materials.

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PBT
PBT (polybutylene terephthalate) is a higher-quality plastic used for keycaps. It's more durable and resistant to wear and fading than ABS, and has a slightly rougher texture that some users prefer. PBT keycaps tend to be more expensive than ABS, but they also tend to last longer.

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Double-shot
Double-shot keycaps are made by molding two layers of plastic together to create a two-tone effect. The legends (letters and symbols) are formed by molding one layer of plastic inside another, resulting in a keycap with a durable, long-lasting legend that won't wear off over time.

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Dye-sublimation
Dye-sublimation is a printing process used to create keycaps with colorful, long-lasting legends. The process involves printing the legends onto the keycaps using a special dye, which is then heat-pressed into the plastic. Dye-sublimation keycaps tend to have a slightly rougher texture than other types, and are more resistant to fading and wear.
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Laser-etched
Laser-etched keycaps are made by using a laser to etch the legends onto the surface of the keycap. This creates a sharp, precise legend that won't wear off over time, but can be less visible in low light conditions. Laser-etched keycaps are typically made from PBT plastic, and tend to have a rougher texture than other types.
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Artisan
Artisan keycaps are unique, hand-crafted keycaps made by individual artists and small businesses. They come in a wide variety of shapes, colors, and styles, and can feature intricate designs and details. Artisan keycaps are often made from high-quality materials like resin, and can be quite expensive.

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Metal
Metal keycaps are made from materials like aluminum, brass, or stainless steel. They're heavier and more durable than plastic keycaps, and can add a distinctive look and feel to a keyboard. However, metal keycaps can be expensive and can add significant weight to a keyboard.
In Conclusion
As you can see, there are many different types of keycaps available for mechanical keyboards. From inexpensive ABS plastic to high-quality PBT and artisan-made keycaps, there's something for every budget and style. Whether you're looking for a durable, long-lasting keycap or a unique, hand-crafted work of art, the world of keycaps has something to offer.