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A comment on Karate physics: How your hand can break concrete without breaking itself. Parent comment

Re:Karate physics: How your hand can break concrete without ... by peddling-brink on Saturday May 04, 2024 @11:35AM (#40258412)
Not cut as in pre-broken (though I’ve seen that too), but cut as in the original action which turned the log into a board. The boards are formed the “wrong” way if you wanted strength, like for building.

Take one of your boards and hold it with the grain horizontally instead of vertically. Try not to break your hand.

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Re:Karate physics: How your hand can break concrete without ... by harimau777 on Saturday May 04, 2024 @06:47PM (#40260926)
I think that most people just take a regular board and cut it into several lengths. Since the grain generally runs along the longer dimension of the board, that means that you break the board down the middle.
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