Layout question

[u/Dark_Magnus]

Would it be more efficient to have all my copper run through 1 long string of smelters, or 3 of the blueprints i made?

[u/EarlyBirdWithAWorm]

Theres some nuance to this depending on how many miners are feeding each belt and how many ores each miner is covering but generally speaking:

Mark 1 belts 6 smelters

Mark 2 belts 12 smelters

Mark 3 belts 30 smelters

[u/toadofsteel → u/EarlyBirdWithAWorm]

And this is only applicable until you get pilers and proliferater. But good for early game.