This is a keycap for the low profile Cherry MX1B-L2NA switch. It prints perfectly on a Prusa Mini with 0.15 mm layer height. The keycap is easy to put on, doesn't fall off and is still easy to take off. Created this basic keycap in tinkercad: https://www.tinkercad.com/things/eYS9n6hJxzm You can download or change to your liking as I made the design public.