• cogman@lemmy.world
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    1 year ago

    Copper is the easy part. Get it hot enough and you’ll end up with high quality copper… Sourcing the copper is much more difficult.

    Finding magnets is somewhat simple, you just need some iron… That’s a lot more difficult. Iron smelting is way harder than copper smelting (especially without electricity).

    Making bearings is also difficult. It requires not only iron smelting but also high precision machining.