Abstract: A mechanized tool that produces rectilinear reciprocal motion for a tool carrying shaft is disclosed. In the preferred embodiment, a rotating power takeoff shaft is attached to a circular disk, bar, or flywheel that has thereon a cam follower or protrusion. This cam follower is carried within a slot that is slidably mounted on a pair of guide rails or within a guide slot or guide rail. Also attached to the movable slot is a tool carrying shaft. Thus as the disk spins, the tool carrying shaft is moved in a reciprocal manner, with power being applied in the stroke in both directions. A pivotable cutting hoe is attached to the tool carrying shaft in the preferred embodiment.