Take a full-length piece of No. 4 tube and flare both ends slightly. This is the air gun (Fig. 37).

Now to make an arrow, cut off the lighting end of a match and insert a pin in the other end (Fig. 38).

An Air Gun

Fig. 37. An Air Gun

The Arrow Is Shot Pin End First

The Arrow Is Shot Pin-End First

Insert this arrow in the air gun and blow it out Does it come out with considerable speed?