I think the idea conceptually is foundries are for casting metals - so they can make shaped items out of a single metal easily, like iron gears or copper cables I agree with what you said, but now the foundry machine is clearly capable of more than just these simple tasks. It can produce complex ma...

Why can the foundry produce complex machines like foundries and mining drills, but not Engine units? The recipe for Engine units is simpler, requiring only iron, and from a realistic perspective, it seems more suitable for foundry manufacturing. Why can foundries only be built on Vulcanus? Is it a l...