127 lines
5.9 KiB
Plaintext
127 lines
5.9 KiB
Plaintext
![]() |
|
||
|
** FIRECRACKERS **
|
||
|
|
||
|
A simple firecracker can be made from cardboard tubing and epoxy. The
|
||
|
instructions are below:
|
||
|
|
||
|
1) Cut a small piece of cardboard tubing from the tube you are using.
|
||
|
"Small" means anything less than 4 times the diameter of the tube.
|
||
|
|
||
|
2) Set the section of tubing down on a piece of wax paper, and fill it with
|
||
|
epoxy and the drying agent to a height of 3/4 the diameter of the tubing.
|
||
|
Allow the epoxy to dry to maximum hardness, as specified on the package.
|
||
|
|
||
|
3) When it is dry, put a small hole in the middle of the tube, and insert a
|
||
|
desired length of fuse.
|
||
|
|
||
|
4) Fill the tube with any type of flame-sensitive explosive. Flash powder,
|
||
|
pyrodex, black powder, potassium picrate, lead azide, nitrocellulose, or
|
||
|
any of the fast burning fuel-oxodizer mixtures will do nicely. Fill the
|
||
|
tube almost to the top.
|
||
|
|
||
|
5) Pack the explosive tightly in the tube with a wad of tissue paper and a
|
||
|
pencil or other suitable ramrod. Be sure to leave enough space for more
|
||
|
epoxy.
|
||
|
|
||
|
6) Fill the remainder of the tube with the epoxy and hardener, and allow it
|
||
|
to dry.
|
||
|
|
||
|
7) For those who wish to make spectacular firecrackers, always use flash
|
||
|
powder, mixed with a small amount of other material for colors. By crushing
|
||
|
the material on a sparkler, and adding it to the flash powder, the
|
||
|
explosion will be the same color as the sparkler. By adding small chunks
|
||
|
of sparkler material, the device will throw out colored burning sparks, of
|
||
|
the same color as the sparkler. By adding powdered iron, orange sparks
|
||
|
will be produced. White sparks can be produced from magnesium shavings, or
|
||
|
from small, LIGHTLY crumpled balls of aluminum foil.
|
||
|
|
||
|
Example: Suppose I wish to make a firecracker that will explode
|
||
|
with a red flash, and throw out white sparks.
|
||
|
|
||
|
First, I would take a road flare, and finely powder the material
|
||
|
inside it. Or, I could take a red sparkler, and finely powder it.
|
||
|
|
||
|
Then, I would mix a small amount of this material with the flash powder.
|
||
|
(NOTE: FLASH POWDER MAY REACT WITH SOME MATERIALS THAT IT IS MIXED WITH,
|
||
|
AND EXPLODE SPONTANEOUSLY!) I would mix it in a ratio of 9 parts flash
|
||
|
powder to 1 part of flare or sparkler material, and add about 15 small
|
||
|
balls of aluminum foil I would store the material in a plastic bag
|
||
|
overnight outside of the house, to make sure that the stuff doesn't react.
|
||
|
Then, in the morning, I would test a small amount of it, and if it was
|
||
|
satisfactory, I would put it in the firecracker.
|
||
|
|
||
|
8) If this type of firecracker is mounted on a rocket engine, professional to
|
||
|
semi-professional displays can be produced.
|
||
|
|
||
|
|
||
|
--SKYROCKETS
|
||
|
|
||
|
An impressive home made skyrocket can easily be made in the home from
|
||
|
model rocket engines. Estes engines are recommended.
|
||
|
|
||
|
1) Buy an Estes Model Rocket Engine of the desired size, remembering that
|
||
|
the power doubles with each letter. (See sect. 6.1 for details)
|
||
|
|
||
|
2) Either buy a section of body tube for model rockets that exactly fits the
|
||
|
engine, or make a tube from several thicknesses of paper and glue.
|
||
|
|
||
|
3) Scrape out the clay backing on the back of the engine, so that the powder
|
||
|
is exposed. Glue the tube to the engine, so that the tube covers at least
|
||
|
half the engine. Pour a small charge of flash powder in the tube, about
|
||
|
1/2 an inch.
|
||
|
|
||
|
4) By adding materials as detailed in the section on firecrackers, various
|
||
|
types of effects can be produced.
|
||
|
|
||
|
5) By putting Jumping Jacks or bottle rockets without the stick in the tube,
|
||
|
spectacular displays with moving fireballs or M.R.V.'s can be produced.
|
||
|
|
||
|
6) Finally, by mounting many home made firecrackers on the tube with the
|
||
|
fuses in the tube, multiple colored bursts can be made.
|
||
|
|
||
|
|
||
|
---ROMAN CANDLES
|
||
|
|
||
|
Roman candles are impressive to watch. They are relatively difficult to
|
||
|
make, compared to the other types of home-made fireworks, but they are well
|
||
|
worth the trouble.
|
||
|
|
||
|
1) Buy a 1/2 inch thick model rocket body tube, and reinforce it with several
|
||
|
layers of paper and/or masking tape. This must be done to prevent the tube
|
||
|
from exploding. Cut the tube into about 10 inch lengths.
|
||
|
|
||
|
2) Put the tube on a sheet of wax paper, and seal one end with epoxy and the
|
||
|
drying agent. About 1/2 of an inch is sufficient.
|
||
|
|
||
|
3) Put a hole in the tube just above the bottom layer of epoxy, and insert a
|
||
|
desired length of water proof fuse. Make sure that the fuse fits tightly.
|
||
|
|
||
|
4) Pour about 1 inch of pyrodex or gunpowder down the open end of the tube.
|
||
|
|
||
|
5) Make a ball by powdering about two 6 inch sparklers of the desired color.
|
||
|
Mix this powder with a small amount of flash powder and a small amount of
|
||
|
pyrodex, to have a final ratio (by volume) of 60% sparkler material / 20%
|
||
|
flash powder / 20% pyrodex. After mixing the powders well, add water, one
|
||
|
drop at a time, and mixing continuously, until a damp paste is formed.
|
||
|
|
||
|
This paste should be moldable by hand, and should retain its shape when
|
||
|
left alone. Make a ball out of the paste that just fits into the tube.
|
||
|
Allow the ball to dry.
|
||
|
|
||
|
6) When it is dry, drop the ball down the tube. It should slide down fairly
|
||
|
easily. Put a small wad of tissue paper in the tube, and pack it gently
|
||
|
against the ball with a pencil.
|
||
|
|
||
|
7) When ready to use, put the candle in a hole in the ground, pointed in a
|
||
|
safe direction, light the fuse, and run. If the device works, a colored
|
||
|
fireball should shoot out of the tube to a height of about 30 feet. This
|
||
|
height can be increased by adding a slightly larger powder charge in step
|
||
|
4, or by using a slightly longer tube.
|
||
|
|
||
|
8) If the ball does not ignite, add slightly more pyrodex in step 5.
|
||
|
|
||
|
9) The balls made for roman candles also function very well in rockets,
|
||
|
producing an effect of falling colored fireballs.
|
||
|
|
||
|
-= Exodus =- '94
|