A Soda and Candy eruption (also known as a Diet Coke and Mentos eruption or a Coke geyser) is a reaction of carbonated beverage and Mentos candies. The numerous small pores on the candy's surface catalyze the release of carbon dioxide gas from the soda, resulting in the rapid expulsion of copious amounts of foam. The bottle's narrow neck increases the pressure of the contents, causing a geyser-like effect.


A cool guy, Bluemetal, have share his design of mentos coke cannon. There are 4 choices of spray, round, flat, cross and V. The round and V work best. However, you need a 3D printer though. 

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