A small latch to lock rooms from inside, like a bathroom. The gears use the involute gears http://www.thingiverse.com/thing:5505 . The bolt travels for 2cm. I tried to make the openscad script configurable for the thickness of the bolt. This will be quite usefull, because after taking the picture I destroyed it while testing.
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Imported from Thingiverse: https://www.thingiverse.com/thing:8218
Original creator: loonix23