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 CONDUCTOR-TELESCOPE
Of tubes of different diameter, tightly placed one on another, you can build a jig for drilling end holes in cylindrical rods of various cross sections. For the outer bushings are better...
SIEVE… FROM THE SUN
The sun is always a welcome guest. Both in the city and especially when going out for country recreation. But sometimes you want to get away from guests too. From the sun as well, when...
