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Finnish Heikki Kaarna inventor who founded the company Vipukirves Leveraxe, perfected the ax in order that it can be easily split even thick block of wood. Apparently his instrument he created a few years ago, but the site of this invention Phys.org reported zenith until now.
In order to split the chock, special effort is required. Ax head attached to the side of the ax handles. A person does not need to make additional motions ax to split off part of the log. Ax splits wood itself by shifting the center of gravity.
Problem in the design of conventional ax is to find the optimal shape of a wedge that will go into a tree and split it. If the angle is too small, no ax split chock, and too large-not enter into it.
When you hit the chock and light penetration in her ax blade starts to slow down. In the place where the blade widens sharply, penetration stops. However, the weight of the ax still has kinetic energy, zenith and shifted the center of gravity causes it to rotate eccentrically down. This twisting motion rotates the sharp ax, actuating as a lever, causing the split chock entire kinetic energy of the ax, multiplied by the lever. Expansion blade ax ax also helps not enter into the tree too deep and not get stuck as often happens with conventional axes.
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