Another intermittent engine (that you really can make at home): the putt-putt or pop-pop boat: http://blog.jgc.org/2011/06/making-ponyo-or-putt-putt-boat.html h

Another intermittent engine (that you really can make at home): the putt-putt or pop-pop boat: http://blog.jgc.org/2011/06/making-ponyo-or-putt-putt-boat.html http://blog.jgc.org/2011/06/making-ponyo-or-putt-putt-boat.h...