<human>: Which of the following solutions is better for the following goal:
how to cut bottles for drinkware

OPTIONS:
- soak a piece of string in alcohol. wrap around the bottle at desired height and tie. Light string on fire, and allow to burn for a bit, before dipping in cold water. firmly tap against a stiff surface. sand edges with a light sandpaper
- soak a piece of string in activated charcoal. wrap around the bottle at desired height and tie. Light string on fire, and allow to burn for a bit, before dipping in cold water. firmly tap against a stiff surface. sand edges with a light sandpaper
<bot>: soak a piece of string in alcohol. wrap around the bottle at desired height and tie. Light string on fire, and allow to burn for a bit, before dipping in cold water. firmly tap against a stiff surface. sand edges with a light sandpaper