The heavier the ax head, the easier the wood chopping will be. Right?
Not necessarily. This ax seems to defy the laws of physics, but the metal is actually manipulated perfectly to create a better chopping surface.
We agree. Splitting a log requires a more force than you might imagine, and Finnish inventor Heikki Kärnä created an ax that works more as a splitter, lever and wedge all at once.
Source: The Blaze