Abstract
The results of the tests indicate the following characteristics:
1) We made a simple power rotating cutters for weeds and grass named E 53-I type.
2) We made and tested 7 types cutters; a straight knife, a convex knife, a concave knife, a circular knife with a vertical shaft, a circular knife with a horizontal shaft, a square knife with 4 sickles adn a new type curved knife with vertical surface.
3) These cutters have a merit and a defect respectively. But the last one looks to do the best work, this can cut the weeds and grass smoothly and make the windrow on one side of the machine.
