Self spinning bidirectional bolt
thingiverse
I saw a video on youtube. which I can't find the link to, but just wanted to try to make it. Someone else had already made it, but it was too tight for my liking. Gave a wider gap so that it could spin by itself and also a hexagon nut so you can see the action. Nut 1-2 goes with Bidirectional bolt Bidirectional bolt smaller goes with smaller nut 1-2.
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