So you've got a broken gear for you model helicopter, and don't have a 3d printer handy. If you need your little helo flying right away, [James] wrote in to tell us about his solution. As you may have guessed from the title, he made a tiny mould and produced a copy of the gear he needed with it. Given the complications of printing or some tiny subtractive method, this little gear turned out really … [Read more...]
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