Dygma keyboards have compatibility for both PBT and ABS keycaps, but in the case of the Defy keyboard, the decision was made to use ABS keycaps for the following reasons:
- We couldn’t find a supplier with high-quality PBT double-shot shine-through keycaps for a columnar keyboard. Normal PBT sets don't have enough 1u keys.
- We don’t have enough time to manufacture and tweak our own double-shot mold. It's a very expensive mold and you can't rush it.
- During the last year, we’ve developed what we consider the best ABS laser-etched keycaps in the market and we believe that people will really like them.
- We discarded offering PBT double shot dye-sub keycaps because of the lack of shine through.
That said, it's in our plans to make our own PBT double-shot mold so we can offer PBT keycaps for the Defy.
Here's a video that explains why PBT keycaps are much more complicated to manufacture: