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Monday, December 5, 2016

The Caltrop / Road Spike

I learned how to make these road spikes / caltrops during an anti-piracy seminar.

You only need a large carpenter nail, a hacksaw and 3 minutes to make one.
 
Use the hacksaw to cut 5 cm (or 2/3 ) along the length of the nail and split the two halves apart.
 
Now turn the nail 90 degrees and do the same at the other end of the nail.
 
This particular road spike will always end up with one pointy/sharp end up, no matter how it is thrown.
 
This makes them ideal for rapid deployment....a cheap and nasty surprise for trespassers!
 
 





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