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Machine shops are Turing complete. You can use a machine to fabricate the machine you are using.

• tlb 7y ago
  Very few are. Making ball bearings, for example, requires very special machines that no regular shop has.
  • catherd 7y ago
    ...but you can make machines in machine shops, as pointed out above. or machines to make machines, if needed. or in the simpler case you might fall back to scraped and oiled ways and bushings