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The first time I saw 3D printing, it was a curiosity, but now it has become so much more. It's like having a Star Trek replicator, where you just tell the computer what you want and press print.
3D printing is a great way to make cool things. The finished objects are not always precise enough for commercial applications, but for their own use or as prototypes, it works well.
3D-printing allows us to replace the junk we find in stores and get things made exactly how you want it. Even with such advantages, some users are left paying more than the cost of a crappy little store at home if they have no experience with 3D printing.