About a foot of the paper should be unrolled from each roll and while still attached to the rest of the roll the end should be pushed into the mouth of the blower. When the blower is first turned on this paper will be ejected and this will start the rest of the roll unrolling. For either demonstration the fast moving air from the blower is at a lower pressure than the still or slow moving air that is otherwise surrounding the rolls. Hence the paper is pushed into the stream of air and is then carried along with it. The paper can be projected almost thirty feet with a powerful blower.
Care needs to be taken that no solid particles are projected with the paper.
It is not advised that the paper be shot directly at a person, but rather aimed above them. A film canister is launched using carbon dioxide to propel it. The canister has to be one of the white plastic canisters, not the black ones with the gray lid. To the baking powder add half a canister of water and place the lid on the canister. Shake well and place it lid end down on a flat surface.