But to make a drill bit of highly alloyed copper you need a bit more tools and knowledge
Do a web search for "Wootz steel", "Damascus blades" and "Iron pillars India". The ancient world certainly had expertise in advanced metallurgy. Wootz steel was actually nanotech.
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Do a web search for "Wootz steel", "Damascus blades" and "Iron pillars India". The ancient world certainly had expertise in advanced metallurgy. Wootz steel was actually nanotech.