Cut the waste newspaper into long strips of 5mm-7mm width, then soak the paper strips in clean water and take them out. Wrap the soaked paper strips 1-4 times along the cutting line of the glass bottle and close to the bottle wall. Newspaper The edges must be neat. Light the alcohol lamp, align the cutting line of the bottle with the flame of the alcohol lamp, and keep turning the bottle. After the bottle is hot, place it in cold water to disconnect.

You can also use a homemade resistance wire cutter to cut glass bottles, glass tubes, light bulbs, etc. When cutting, please pay attention to: First, leave a 1mm-2mm space at the junction of the resistance wire around a circle to avoid short circuit. Second, the glass bottle must be cut off quickly after dripping water. electricity