Making Glasses From Bottles.
The three parts of a bottle are the neck, body and mouth with the area from the neck being slender than the rest of the body. A gob is made by cutting of a stream of molten glass from sheet glass or from glass container glass with a clipping blade to form glass cylinders using either the blow and blow process or the press and blow technique. When the manufacture of the bottles is completed, they are distributed among different uses like storage of perfumes and drinks.
Empty bottles can be modified by cutting them to make glass bottles for other uses such as for pen storage drinking glass and as a vase or to make a wine bottle light kit in a number of ways:
Use of flame to make a glass bottle. The first step is to create a line where you would like the bottle to cut off at using glass bottle cutter tool such as a glass cutter or a glass grill. The bottle is then heated along the line while focus the heat directly along the score line you created and constantly rotate the bottle to get even coverage of the heat from a small candle or a small butane torch. The bottle can be dipped in cold water in a sink or in a pot full of water as the third step after the 5 minutes heating. The bottle will not necessarily break off with the first trial so you might need to repeat the process until it cuts off. Finally, rub the edges of the glass immediately after it breaks, to avoid cutting yourself. With a square sand paper and then with a finer grit sandpaper.
Use of a yarn to cut a bottle.
First, wrap the yarn or cotton string around the bottle 3 to 5 times at the area where you would like the bottle to break, tie the ends together and cut the excesses. The string or the cotton yarn is then removed from the bottle gently and placed on a dish where nail polish remover or straight-up acetone is added over the yarn until it soaks completely while the excesses are poured into the bottle. Place the yarn back to the area of the break off with the loops of the yarn close together and tight so that you get a level and clean break. Use a match or a lighter to light the yarn and rotate it gently to allow for consistent burning. After the yarn burns out, dip the cut off end in a sink or pot full of cold water to cut. Smoothen the edges with a rough sandpaper and then with a finer grit sandpaper.