Used by dressmakers for ripping the old seams convenient rezachek in the form of a two-pronged fork with a sharpened inner edges will serve to raskryvanie sheet soft plastics, as shown in the figure.
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Blanks of sheet metal with a thickness of 3 - 5mm will be more accurate and easier to bend at home if they are pre-trimmed along the fold lines using the grinder (and if the workpiece is...
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In December 1921 on the initiative of a group Krasnotsvetov (so called in those years, military pilots of the red Army) — the staff of the research version of the Air fleet was organized...
