You’re right. The main challenge was just zeroing in on the point where the plastic softens to let the heated ink penetrate without deforming or burning the keycap. I think there’s potential here to do it better than I have, but I do think I landed on one of 2 or 3 different possible settings that will work decently well.
It’s a low-rent form of dye-sublimation, and I don’t know if they’re using lasers, but dye-sub is one of the preferred ways to add legends to PBT keycaps.
You’re right. The main challenge was just zeroing in on the point where the plastic softens to let the heated ink penetrate without deforming or burning the keycap. I think there’s potential here to do it better than I have, but I do think I landed on one of 2 or 3 different possible settings that will work decently well.
It’s a low-rent form of dye-sublimation, and I don’t know if they’re using lasers, but dye-sub is one of the preferred ways to add legends to PBT keycaps.