Started this as a fun project for my workbench since a 4 button hitbox is uncommon (wanted to use it for Neo Geo), but decided to expand the model to handle 4, 6 and 8-button configurations. Build consists of a top and bottom part of the shell, and snaps together without any screws.

Cable retainer accommodates a 5.5mm diameter cable, and can be held in place with either a cable clip or a ziptie.

Buttons used: Face buttons - 24mm snap-ins Jump button - 30mm snap-in Start/Select buttons - either 16mm screw-in or 24mm snap-in

Created a nice Neo Geo styled DB15 hitbox for use with my supergun with this project, Neo Geo appears to have it's own implementation of SOCD, but there should be plenty of room to throw in a SOCD Arduino if needed.