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”.
Recommend to read
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...
TRACTOR-TRUCK: A SMALL, BUT VALIANT
The first homemade motorized assistant appeared in our family almost 20 years ago. We made it V. Il'ichev development of the suburbs, published in the journal "modelist-Konstruktor"....
