You can try it.
Methods/Steps
1
Get a glass bottle with some water, some oil, an iron sheet and a washbasin.
2
This article is based on experience
3
Put the bottle into the basin and add water. The water in the basin is best added to the water in the bottle.
4
Add oil to the basin and cover the surface of the basin.
5
Heat the iron sheet until it turns red and place in a bowl.
6
Wait for a moment, then pick up the top of the bottle, and you will find that the part of the bottle where the water is added has been perfectly cut off.