You know the problem: the dishwasher that has cleaned your dishes
faithfully for 15 years suddenly stops working. You call out a repairman
who identifies the problem: the filter unit has finally given up the
ghost. “Ah,” you say, much relieved, “can you fit a new one?” At which
point the chap shakes his head sorrowfully. No can do, he explains. The
company that made the machine was taken over years ago by another outfit
and they no longer supply spares for your ancient machine.
Up until now, this story would have had a predictable ending in which
you sorrowfully junked your trusty dishwasher and bought a new one. But
there’s an emerging technology that could change that. It’s called
three-dimensional printing.
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