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Self-closing box Answered

I saw an instructable where a box has a toggle switch, and when hit, the box turns the switch off. I can't for the life of me find the instructable now. What is it?

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Websearch "most useless machine". I'm not sure "most" is actually in the title. There have been several versions; the simple analog approach is the one which I found most entertaining.

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gbot

8 years ago

I don't know if you have found this yet but here is a link to "The most Useless Machine Ever"

https://www.instructables.com/id/The-Most-Useless-Machine/