Steps . Mold your volcano around a 20-ounce soda bottle. (Follow step 1 above to create your volcano structure.) Mix 1 cup of vinegar, 1 cup of warm water, a teaspoon of dishwashing detergent, and ...

4. Place the cone over the bottle. Tape the top of the paper cone to the neck of the bottle to hold it in place. Tape the base of the cone to the other sheet of card. 5. Use paint to decorate the cone ...