How can one have a custom keycap set built?
By custom keycaps I mean keycaps with a custom geometry that doesn't exactly match the profile/shape/size of any existing keycap set.
I'm currently 3D printing such keycaps but I wonder how they could be built in (non-3D-printed) ABS or PBT.
The shape is not too exotic; they look kinda like this:
https://adafruit.com/product/5111 but with some (nontrivial) differences.
Bonus question: how to add custom art/fonts/icons to the keycaps.