Tech Deck Connector Small with locking pins

My cousins grand kids needed some, and not available in the UK. So trawled for a file, but no locking means. Quick bit of tinkering, and a tight fitting pin and hole added so thay can be easily stacked and keep alignment. File is for a single, so clone as required.Used a 0.4mm nozzle at 0.24mm draft, as doesn't need to be perfect finish, and any small layer lines will help act to grip the small parts. Images are of a single, a joined and a batch being produced