This is a D pad for a Sega Megadrive 6 button controller, my original one sheared off so I designed this replacement.

For best results I used a flexible filament mainly for comfort, I used TPE for this but TPU should work just as well.

I initially tried printing this in PLA but it was somewhat uncomfortable, it also had a habit of rotating while in use which is not exactly ideal, with flexible filament I was able to more tightly secure it in position.

To secure the Dpad I used a 10mm M4 bolt screwed into the hollow stem of what remained of the old Dpad, I flattened two sides of the head using a file although this may not be entirely necessary.