Super-Sizing Lego Sets Is the Only Reason You Need a 3D Printer
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They've been used by large companies for rapidly creating prototypes for at least a few decades, but finding a reason to put a 3D printer in every home hasn't been as successful. Making accessories for your vacuum ? Boring. Building pop bottle bridges ? Meh. Super-sizing Lego? Hello holy grail of 3D printing.

Matt Denton used a Lulzbot Taz5 3D printer to create a giant version-all 98 pieces-of Lego set #1972, a Technic go-kart originally released in the mid-'80s. Given the size limitations of his 3D printer (you can watch a making-of video here ) Denton's over-sized go-kart is only about five times as large as Lego's original. So while it's still too small for a kid to ride, the steering still works, it can be fully disassembled, and it even has 3D-printed rubber tires.

It's finally time to buy a 3D printer.

[ YouTube via Popular Mechanics ]