Mordiev's Door Hinges Geared, Nutless threaded back

Threaded backs to screw the M3 bolts if you can't get those size nuts (like here in Argentina). If your printer can't print the M3 thread, just use a 2,5mm drill bit or a hot screwdriver. Add tape to the back if you want. I used 10mm M3 bolts. You can use any 3mm or so bolt even with a different thread.