The shaper shaft differs from others in that the knives themselves are arranged in a spiral. In addition, they are turned at a small angle relative to the direction of the axis of the shaft itself.

The use of such a design allows for a smooth entry of the knives into the workpiece and ensures a low noise level during operation. The quality of the processed surface increases and the effect of tearing the surface of the parts is eliminated (when processing blanks with knots). The durability of the shaft is increased thanks to the 4-sided rotary plates. Each edge is numbered, after dulling one edge the knife turns and the next edge works.

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A special place is occupied by planing shafts, which have the name "corn". Their design is quite diverse. Shapers are the simplest. They are a rod on which a special section is cut. It is used to process the part. More complex, belonging to the corn class, is a cutting tool of type design. Separate parts are incisors located in such a way that they vaguely resemble a corncob. If you approach the terminology more strictly, they have a more accurate name - cutters