THERE ARE many ways to stick things together: glue; solder; welds of various sorts. But one that remains surprisingly popular is riveting. In some ways, riveting is about as old-fashioned a method of union as it is possible to imagine. A rivet is a mushroom-like stud, with a cap and a stem. The stem is pushed through matching holes made in the two materials to be joined, so that its end is proud. The proud end is then made into a second cap, using a hammer or a rivet gun.
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