satisfying spring action back to center, also allows for pushing down.
guard is optional and goes between the spring and top
uses 5x 16mm M3 screws and a nut: https://a.co/d/erM2NNo
https://youtube.com/shorts/gcyjI28Mc38?feature=shared
pictured with 'Joystick_-_Top' which is 12mm hex, included a smaller hex which would allow less travel but would allow spring to last longer. print with .4mm nozzle. A larger nozzle won't allow for enough center wall layers in the spring.