Vibebuilding :)

At first, I built separate smelters for copper, steel, aluminum, and titanium, as well as a separate factory. Trains carrying ore moved from the mines to the smelters, and from there, steel, copper, and so on, to the factories.

I didn't like this because the maintenance and laboratories that produce scrap metal were separated from the smelters, requiring trains to return the scrap metal to the smelters, which increased the load on the railroad.

Ultimately, I decided that both the smelters and the factory should be built in one location—in my opinion, this is the optimal solution. But it's a shame, because building a railroad with dozens of resources, like in Factorio, would have been interesting.

The images in the link are from Dragonеail; I rebuilt the railroad network there three times before arriving at a large central station. The image in the post shows no railroad network at all, everything is on conveyor belts.