To assemble a membrane whistle, you will need a flexible material such as a balloon or a silicone glove (it won't work with regular plastic wrap). Simply cut a piece of the balloon to the size of the whistle's bottom part and put it together. It's not difficult.
Important notice: the membrane must be stretched, otherwise the whistle will not work. The models have two sizes of the whistle's bottom part for thicker and thinner membranes.
Uživatel se označil za původního autora tohoto modelu.