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The analog of a block of wood and time (or at least a chisel) would be a milling machine (e.g. CNC) since both are subtractive fabrication (you start with a solid pieces and remove material to get the result). 3D printing is additive (you start with nothing and add material to get the result). There are some things that would be possible in one but not the other. For example, creating a fully-enclosed hollow region is only possible in an additive process (though still challenging).


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