FIELD: forest and wood-working industries, applicable for division of timbers along the fibres and production of process chips, plaster lath, wall finishing material. SUBSTANCE: the technical result is attained due to elimination of friction of the wedge lateral faces against the slot walls in the process of sawing, ring notching process and replacement of length cutting with cleavage at production of semi finished products. EFFECT: reduced power intensity, enhanced capacity and quality of wood processing. 5 cl, 11 dwg
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