Vipukirves is an efficient tool for chopping firewood, possessing many advantages, such as speed and work safety, over traditional axes and small hydraulic log splitters. Vipukirves separates sections from the log using a unique lever action that allows logs with branches to be split into firewood in seconds. The splitting force of Vipukirves is considerably stronger than with a traditional axe. Strike and loosen!
Vipukirves has an ingenious design. Upon striking the log, it automatically turns to the right and detaches the chopped portion from the log. Vipukirves functions like a conventional axe with the exception that the user must loosen his/her the grip on the handle when the blade strikes the log. Chopped sections are removed with a single strike and the blade doesn't become lodged in the log, but keeps it in the same place and ready for the next strike."
See it in action here.