As the Russian proverb says, “water will find a hole”. And one that cannot be detected “by eye”. Help out in this case a bucket of water. Drop it into a “soggy” boot and squeeze, tightening the top shaft: emerging air bubbles from the holes will be given where it “hides”.
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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... - THE RADIATOR FOIL
Fast and simple — to manufacture heat sinks for transistors and microcircuits made of copper or aluminum foil with a thickness of 0.1—0.3 mm. Plates are cut with scissors, carefully...