This is work in progess, not everything has been tested and found working.

This is a working square arcade button for Sound Voltex controller. You only need to buy bulb/microswitch holder, microswitch (led optional) and spring.

When I was planning to build SDVX controller, I came upon the choice of buying either cheap China buttons or expensive Sanwas. I took a different route and modelled the button.

Purchase list: Black Bulb Holder For Illuminated Buttons https://www.arcadeworlduk.com/products/black-bulb-holder-for-illuminated-buttons.html Microswitch (I bought Acemake and D44X) https://www.arcadeworlduk.com/categories/Arcade-Parts/Microswitches/ Spring http://istmall.co.kr/us/goods/goods_view.php?goodsNo=1009992332