Mechanical Iris Aperture fidget toy
thingiverse
A Mechanical iris that opens and closes like a camera aperture . This one requires no additional hardware like screws. I do recommend using some sandpaper on one part.. see the video on assembly. https://www.youtube.com/watch?v=dy1BQ8MRzwk It's a fun thing to have on your desk. Slice it at 0.2mm layer height. Seems to print without supports. Print 9 copies of the Lotus Blade.
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