ROCKET POT.

[Illustration:

Fig. 18.—Pot-former.

]

[Illustration:

Fig. 19.—Rocket pot.

]

8. I will tell you my method of making the head, or _pot_ as it is

termed, of the rocket. You must have a piece of hard wood turned of a

shape like that indicated in the following woodcut (fig. 18). The

straight part of this should be about 4 inches long, and a shade larger

in diameter than the exterior of your rocket-case—that is, about 1⅛ inch

in diameter, if you adopt the method of cutting up your imperial board

and 70-lb. brown paper given in _this_ chapter. Now take some moderately

thick brown paper, and cut it into strips about 5 inches in width and 8

in length; each of these strips will be long enough to go twice round

the _pot-former_ described above. When you have pasted as much of each

strip as will not lie actually against the former, roll it up straightly

and pinch in one end; you will thus have made a cylinder of paper (fig.

19) closed at one end, the other end of which will fit nicely over the

clay end of your rocket. This is the pot of the rocket, which is to

contain your stars, rains, &c.

Pyrotechny · 第 23 / 97 题