Hex keycaps are definitely less common, but can still be found (https://www.littlekeyboards.com/products/hex-keycaps https://www.littlekeyboards.com/products/he

Hex keycaps are definitely less common, but can still be found (https://www.littlekeyboards.com/products/hex-keycaps https://www.littlekeyboards.com/products/hex-keycaps). Or you could get 3d prints of the exact profile you want. Edit: Interestingly, above were also the result of an experimental musical instrument. See https://kbd.news/0xC-0x33-1525.html https://kbd.news/0xC-0x33-1525.html