I made this design for my colleague Serge.

He wanted a 2 fingers push button for his old mother who need to push 2 buttons at same time in lift.

I "borrowed" the excellent design of the grip from EvenErichsen here

https://www.thingiverse.com/thing:144530

It s a really nice grip !

Parameters that was important in this design :

• the fingers must not be pinched by the dropping "two fingers" part
• i made it modular so i don't need to reprint the whole thing
• esthaetic. It must not look too bad (did i mention the grip is super nice ?)

Improvement : play is too big, more friction so screw doesn't need much tightening.