Baton with a folder...Check this out!

[kniferbro]

That specific hammer was designed for absorbing impact energy more than transfer energy. Matter of fact, even today it still world wide use for house or cabin construction, to drive in pegs made of wood without damaging the peg itself!
Well, it is the Net era

This. The rubber mallet he is using skews the results in my opinion. Its still impressive though.

 

[untamed]

I think most of us were impressed. . . but only to a certain degree though.

I'm more concerned with the pivot actually in those touted with super strong locking mechanisms.