BUCKFIELD – The two Maine men famous for creating fountains of foam using Diet Coke and Mentos candies have a new book.

Stephen Voltz and Fritz Grobe just released a book to share secrets to some of their pranks, from building and arming wooden paper airplanes launchers to making air cannons.

The Buckfield duo’s book is called “How to Build a Hovercraft.” And yes there are instructions inside on how to make a hovercraft out of stuff found in most garages.

Voltz tells the Sun Journal of Lewiston the book is real science and shows that they are more than “just Coke and Mentos.”

They shot to fame several years ago when they wore lab coats and goggles during their online videos, which led to TV appearances and shows around the world.