Experience, how one reduces a bottle beer by half! That' s right to learn watch this video Tutorial like one a Bierflasche in half with acetone, Streich-und fire cut. They must be also the glass bottle empty, and probably shears. Which you do, a piece is cord around the Bierflasche tie, where you want to cut it in two halves, then you exclude it and enjoys it in acetone or nail polish remover. If you put it the bottle, easily in fire, then you put it into cold water. It is so simple...