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In: Technology
Metal moves in unpredictable ways when you strike it
They did not understand this and did not account for it.
It is still a problem today. You take a flat sheet of metal to make a car panel, you press it into shape, then you have to trim the excess leading to waste. So why don’t I take the pressed piece and make a perfect template so I don’t have waste. Well what happens is you can’t perfectly predict how metal will move so you don’t get any good pieces produced from your template, you just need to have more and trim the waste.
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