Useless Machines

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I want to build my own useless machine, but with an articulated finger which snakes out to switch itself off. I'll start with a backscratcher

terryspitz

1

Print it, Build it, Wire it up

Print:
1x base.stl (with Supports), others parts can be rotated so they don't require supports:
1x fingernail.stl
1x gear.stl
2x finger.stl
3x screw.stl
Let me know if it's not completely obvious to assemble.
Wiring according to Instructables link: https://cdn.instructables.com/FOK/1HDA/GHHILR6T/FOK1HDAGHHILR6T.LARGE.jpg

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