Step 2: Materials and Tools

In short, use what you have. You could make a simple undroppable with nothing more than a piece of metal, hacksaw and sandpaper. Here's what I used:

1) Segment of metal with a thread at one end. You could use a lathe, and a die to add this thread, or drill a hole, tap it, and use a bolt.
2) Hacksaw
3) Bench grinder
4) Sandpaper
5) 45 minutes overall.
Cool, clever and well thought out - - big respect. <br> <br>DZ
How much I would have loved to have this through geometry...
I have needed one of these for years, inherited fidgeter.
Where can I order one? :)
simply awesome. you see something new everyday.
i dont want to live on the planet anymore...
Correct me if I'm wrong, but can't you unscrew it, thus creating a bolt that can be dropped?
Dad always carried a worry rock. I guess he was the organic type. If he had seen this he would have switched! Gotta go make me a fidget-thing!
I absolutely love this. In a very weird way.
I'm a little susceptible in that it looks like a shank weapon. Who knows if a person gets mad at another they can just throw it at them. Just an observation not an opinion or to be mean, just poking holes in the theory.
Hence the reason that the end is squared off, not left a point. Besides, it may be a little small to inflict damage! <br>But yes, if you really were desperate you could throw it at the lecturer, and hope no-one notices it was you....
cool ! I used to carry a bolt with 3 nuts and a couple washers, I mangled the last few threads on the bolt so the nuts couldn't spin off.. it got me through many a lecture.
You could sell this - seriously. The rate of fidgeting is way up these days. Nervous leg syndrome everywhere - offer it as a package deal with something for bouncing knees and you're a millionaire!
Slap a bottle opener on it and you really reach out to the collegiate market.
Little more work and it looks like a nice desin foe a small hammer.
That's a great idea. <br> <br>If you made it as some sort of jewellery, it would be <em>absolutely</em> undroppable!

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