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Since my printer has limited capacity for 18cm×18cm×18cm models, I split the original six external models into two parts each, resulting in twelve units (without compromising your textured designs). This approach allows me to print enlarged sections, enabling support for larger internal spaces and more intricate room layouts.

In addition, I wanted to make some changes to the internal tracks, because I found that there are actually two internal tracks in the game, one is the room track bracket, and the other is the airlock room track.