The second method is whiter than simple.
A clear milk bottle, a skein of thread, an old-old cologne, matches and cold water were taken. In the right place on the bottle I wound the thread thickly, dubbed it abundantly with cologne and arson. Rotating the bottle around the axis parallel to the ground, he waited a while and splashed water on the flame. The bottle burst evenly and even so, without much effort, I got a wonderful transparent glass, which at the same time looked like a handmade vase. After some time, a variety of candlesticks appeared in our house, a glass for pencils, and, of course: a handmade vase!