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Decision 06 of 13

Keycap material & legends

What the caps are made of and how the letters are made.

Keycaps are made from two main plastics — PBT and ABS — and legends (the letters) are applied by several methods. PBT resists shine and feels textured; ABS can sound a touch deeper and takes vivid colours but eventually develops a smooth shine. The legend method determines durability and whether RGB shines through.

PBT vs ABS

PBT is denser, more textured and resists the greasy "shine" that develops on well-used keys — a great default. ABS is smoother, can sound slightly deeper, and supports the crispest doubleshot legends, but shines over time.

Legend methods

Dye-sublimation dyes legends into PBT (durable, no shine-through). Doubleshot moulds the legend as a second piece of plastic (extremely durable, can be made shine-through for RGB). Cheaper pad-printed/laser legends wear off over time and are best avoided for a gift.

Shine-through for RGB

If per-key RGB matters, choose doubleshot shine-through (or "pudding") caps so the legends glow.

The options, compared

Every choice you'll see for this decision in the builder.

PBT dye-sublimated
Durable

The connoisseur default: textured PBT with legends dyed into the plastic so they never wear off. Does not shine-through for RGB.

Pros
  • Resists greasy shine
  • Legends never rub off
  • Pleasant texture
Trade-offs
  • No RGB shine-through
  • Slightly muted colours
PBT doubleshot
Durable + crisp

Best of both worlds — PBT durability with sharp moulded legends, and available in shine-through styles for RGB.

Pros
  • Very durable legends
  • Shine-through options
  • Textured PBT feel
Trade-offs
  • Pricier
  • Can have a slight seam
ABS doubleshot
Vivid + deep

Crisp moulded legends, the most vibrant colourways, and a slightly fuller sound — at the cost of developing shine with heavy use.

Pros
  • Sharpest, most vivid legends
  • Shine-through friendly
  • Slightly deeper sound
Trade-offs
  • Develops shine over time
  • Smoother (some dislike)
Blank / relegendable
Minimal

For touch-typists who want the cleanest look. Pairs nicely with custom firmware where layers matter more than printed letters.

Pros
  • Cleanest aesthetic
  • No legends to wear off
  • Encourages touch typing
Trade-offs
  • Not beginner-friendly
  • Layers must be memorised
Further reading
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Case material
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