FIELD: woodworking industry.
SUBSTANCE: invention relates to the woodworking industry, in particular to the production of constructional sawmill from round timber with core rot. With the round timber removed bark. Sawing round logs with core rot produces a four-bar. Four-cant timber is divided into four parts of a rectangular section. Received parts are dried, then milled to give a plane-parallel shape. Core rot is removed to produce preforms of an angle cross-section without rot, that are glued into T-section products.
EFFECT: number of technological operations is reduced.
1 cl, 5 dwg
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