Q: When building a fight stick, what's the required thickness for the control panel for button and joystick installation?
A: The thickest panel a snap-in button can accomodate is 1/8 inch (3.175mm) thick. Anything thicker than that will require screw-in buttons.
Replacement commercial stick panels can be found online. Custom wood/MDF panel steps can be found at http://www.slagcoin.com/joystick/mounting_layering.html
Image: Sanwa OBSF-24 (snap-in), Seimitsu PS-14-DN (screw-in) Photo courtesy of slagcoin.com