We disagree. It's possible that one of the biggest future markets for 3D printers will be beyond mother Earth, in space where the future will be built. By 3D printers.
The single, most important reason we think this is simply that it is fantastically expensive to loft finished items into space, becoming even more expensive the farther you want to go.
Imagine the cost of say, shipping a complete human habitat to Mars versus shipping a specialized 3D printer that could construct the majority of the structure from freely available onsite materials, then shipping only the remaining complex components for installation. This could significantly reduce the cost - and increase the probability of future space travel.
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