An unusual cleaver by the principle of a press can be made using a hydraulic jack. This is a powerful construction made of thick metal, which can not stand any wooden chock.
The design of the cleaver is a vertical press, in the upper part of which a cone is made, this position is due to the use of a hydraulic jack, because it works only in the "standing" position.
For crafts, thick metal was used, which must be well boiled by electric welding. At the base there is an I-beam on the lower side to which the platform-base for the jack is welded, and on the top there is a cone.
For convenience, two powerful springs are used to return the jack, which quickly return it to its original position. If the height of the wood chock is not large, you can substitute a steel profile under it directly on the bottom of the cleaver.
