Factorio lets you rip apart factories and rebuild them (for no cost) for this reason, and even as a seasoned player while I have my go-to strategies, I still en

Factorio lets you rip apart factories and rebuild them (for no cost) for this reason, and even as a seasoned player while I have my go-to strategies, I still end up rebuilding sections. That's not failure it's just part of the gameplay! There are a few mods that can make your life a bit easier though - check out Factorissimo which lets you make self-contained buildings.