The End of the Spare Parts Market: If you’re a farmer in Iowa and your tractor breaks during harvest time, waiting a few days for a spare part could jeopardize the entire season. A 3-D printer solves this problem. And it’ll solve the same problem for everything from coffeemakers to skateboard wheels. This doesn’t just mean an end to the spare parts business, it also means a new level of longevity for the products we purchase.
