Kailh Choc Caps (made after Olivetti Praxis 48)
Caps with a small contact patch.
I saw an overview of electric typewriters by Joe Van Cleave, in which he explained the strange shape of the keys in Olivetti Praxis 48:
https://www.youtube.com/watch?v=jdvN2sSKDTM&t=1290s
According to him such caps were easier to press with long finger nails.
Flat caps that I use for my ThumbsUp! v10 keyboard do force me to keep the nails really short, not that I wanted six-inch nails, but trimming them every few days only to be able to work is a bit annoying.
So, here is my new version of the caps somewhat repeats the shape of Praxis' key caps.
No support needed, just place the model so the slot (cut-out) in the block connecting the halves is looking up. This way that connector works as a support for the pins. The contact pad and the top edge should be ok, the distance is short enough for the bridge.
UPD 2024-12-12: Redesigned the cap, made the contact pad a bit bigger, modified the bottom part not to interefere or touch the switch ( to avoid noise on the pressing.)