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"The problem simply reduces to the same line problem with the points defined in 3 dimensions." Except when you have overhangs.

• theon144 13y ago
  To be fair, overhangs add a bit of fun to 3D printing too.
• starky 13y ago
  There are ways to deal with some of the overhang issues with proper tooling though. Regardless, as I said, 3D printing definitely wins in the complexity capability, overhangs are just one of them.