How were moldings for a lot of items, e.g. car parts, created for the factory before the invention of 3D printers/computerized designs? Like how were they able to achieve the acceptable precision?
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Precision is just a matter of enough iterations to get the tooling right, then it’s just make-work for the tooling. If you design the tools that make the dies/molds properly, then the precision is built into each die/mold in the process of its creation. You only need to tune the original die/mold making machine to high precision, which can be done manually; how do you think we “taught” the computers to that high precision?
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