If you use the right ink, the right plastic keycaps made for mechanical keyboards, and the right settings on your laser, you can effectively dye-sublimate any design you want.
If you use the right ink, the right plastic keycaps made for mechanical keyboards, and the right settings on your laser, you can effectively dye-sublimate any design you want.
I recommend running some trials with your own laser, but for my 5w Comgrow Z1, 2% power and 45mm/minute ended up working well for PBT plastic. There are probably “sweet spots” at higher power and speeds, but low and slow came out best for me. Good luck!