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Watching Cody's Lab on YouTube, it seems people used to mine and refine (distill) some metals with what looks like less than a ton of equipment.

• metalliqaz 6y ago
  And then manufacture it into a high-precision instrument... in space?
  • m4rtink 6y ago
    Just turning asteroid material to below average 3D printer feed could be a big and useful first step - just overengineer everything by a factor of 3+ and you can build a big part of your mining operation in place from local resources, to refine/proces/manufacture from the good stuff.
    • mkoubaa 6y ago
      Build a crude tool, then use the crude tool to build a less crude tool, repeat. This is more or less how civilization happened