I'm working on creating parts which I want to fit snugly together. Obviously, if I make the female side of it 5mm and the male part of it also 5mm, it isn't going to fit together due to interference ... IOW: it's going to be too tight to fit together correctly. My questions are:

  • How much relief should I leave between pieces?
  • Is there a "standard practice"?
  • Do different shapes demand different relief distances?
  • Are there any factors which might affect leaving more or less relief between parts?

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