Steno Key Tops for staggered keyboards (Cherry MX style stems)

Look for my other keyboard designs at https://thumbsupkeyboards.etsy.com/

UPD: see a newer, better version here: https://www.thingiverse.com/thing:3208321

These keycaps turn a regular keyboard into a stenography keyboard.
Its main purpose to convert the staggered layout into the orthogonal three-rows.

See here for the idea:
https://github.com/openstenoproject/plover/wiki/Supported-Hardware#keyboards

In these keycaps the stems are moved 5mm to one side (1/4th of the regular 20mm spacing).
Th