eli5 why hydraulics can be used to crush near everything, but the functional components don’t crush themselves?
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The other answer here is perfect. In even simpler words. Your hand can crush a piece of paper or a can. If you try to crush a brick nothing will happen. Your muscles aren’t strong enough to damage your body. Only in some extreme weight lifting cases and arm wrestling do you see that people break their own bones by over exerting them.
Same holds for the hydrolic press, its build to apply X force. Everything that cant handel that will break, the rest will not and then nothing happens.
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