Arcade stick that uses cherry-MX style keyboard switches

you will need

4x Mechanical Keyboard Switch
(pack of 10 cheap on ebay https://www.ebay.co.uk/itm/10pcs-Mechanical-Keyboard-Switch-Red-for-Cherry-MX-Keyboard-Tester-Parts-n-EY/273206756125?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649)

1x m8 100mm bolt with nut

a spring
(i used a Seimitsu Joystick LS-55 Spring https://www.arcadeworlduk.com/products/Seimitsu-Joystick-Spring.html)

4x m4 bolts or screws to mount

(Note)
The switches may be a little lose in the housing they shouldn't fall out but I decided to add a dab of hot glue to each one just to be sure.