How to Make a Boomerang Axe

Unfortunately, you missed the door-to-door salesman. He's escaped down the street and it's not really worth chasing him.

But now you do have to walk about 50 feet to retrieve your axe, which is no fun since you don't have your shoes or pants (or, in fact, any clothing at all) on. What now?

You should have used a boomerang axe, like this one built by Instructables member bricobart. When he throws it and misses his target, it'll come right back to him. That's handy!

Here's bricobart's story of what inspired him to build the boomerang axe:

A few years ago I was exercising my axe throwing technics (don't ask me why I was doing thàt), and too bad for me a few people saw me busy. I'll skip the details, but know that I ended my day in the local police headquarters, where a few dozens officers did great efforts to explain me that throwing axes in retirement home gardens was really really bad. And that my dad would come to pick me up the next morning. In the meantime I learned also that even walking with axes seemed to be out of the law.

This doesn't actually explain his reasoning, but far be it from me to argue with a man who has a boomerang axe.


Comments (3)

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Naturally occurring uranium is only very slightly radioactive, but the difference between naturally occurring uranium and what is often termed "highly enriched" uranium (HEU) is night and day.

100 kilos of HEU has a high chance (due to nucleic decay) of reaching critical mass on its own at any given moment. Natural Uranium... meh... not so much. In fact the stuff is reasonably okay to be around, although you don't want to eat it or be exposed to it for long periods of time.

2 billion years ago (much longer than the half-life of U235) there were a few natural nuclear meltdowns when huge deposits of Uranium surpassed the decay limits. This type of thing can't happen today because so much of the U is depleted in the earth's crust.

The guy in the picture probably lived a long life and if I had to bet didn't die of cancer. If anything he is pretty lucky to be one of the few humans on earth to come across such a large deposit of such an exceedingly rare element. Uranium is almost as rare as gold.
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All I know is that I saw the word 'uranium' and saw this guy sitting on it and went "Aaaaaargh! Get him off! Get him off there!"

Thanks for pointing out the difference between HEU and Natural Uranium mrgoodbar.
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as stated, unenriched uranium is fairly harmless, plus uranium is a good shield for neutrons. it emits fast neutrons which pass thru the body quickly, the slow neutrons are shielded by the uranium. for a criticality to occur you need three things....mass, moderator and geometry.
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Two questions:

If the caption is right, then doesn't that hunk have the equivalent radioactivity as 2 fissile nuclear weapons' worth?

Also, is natural uranium and depleted uranium almost the same? Either are low on the highly radioactive form U-235, but DU has also been shown to have residual radioactivity and can cause cancer in lab animals.
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