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Rocket-Propelled Whatsit:: Part 3 of 4
I feel obligated to point out for the clueless that building an RPG is dangerous, and extremely illegal in many places. Some of the materials are unstable. You can't even store some it for more than a few weeks. Don't build one on a lark. It isn't a toy. You could kill yourself or an innocent bystander. When things go right, this design isn't even extemely accurate.

If you must try this out to verify that it works, and that your skills are up to it, be careful.

Otherwise just file this information in the "open in emergency only," war-just-broke-out cabinet.

Warhead

• 4 inch cardboard tube (same as you used for the motor), 4 inches long
• Acetone peroxide explosive
• Improvised plastic explosive
• Thin-wall metal tube (a good pen barrel can work)
• Foam block (Styrofoam works)
• Glue
• Tape
• Plastic Wrap
• Epoxy putty

This is an attempt at improvising a shaped-charge warhead. I don't promise the effect will work, but it doesn't hurt to try.

Warhead
Start by half filling the cardboard tube with your improvised plastic explosive. Press it in so the plastic rides up the sides of the tube to make a concave cone. This shape is what ought to give the shaped-charge effect.

Now take your foam block and carve it into a cylinder. Then carve the bottom into a cone shape to match the plastic explosive. Round off or point the top; this is your rocket's nose cone, and helps hold the plastic explosive in place. Cut a small hole (try pushing a pencil through the foam) in this lengthwise from nose cone point to base. Set this into place over the plastic explosive and tape it down.

Detonator
The whatsit is supposed to be impact detonated, which is why the acetone peroxide; the stuff is impact and heat sensitive.

Cap one end of your little metal tube with some epoxy putty.

Instead of dumping your AP directly into the tube, make a little plastic wrap cylinder of the stuff, then slide it into the tube. Yes, this is a tiny pipe bomb. Be careful.

Cap the remaining open end of the tube.

You could slide the detonator down the hole in the foam nose cone now, but for safety's sake don't until your ready to fire the rocket. Your warhead is construct like this:

Install the warhead in the rocket by pouring a bead of glue around the warhead's cardboard tube, then sliding into the rocket fuselage in front of the motor.

You're finished. When you're ready to fire, stick the detonator into the nose cone, seating firmly into the plastic explosive. Slide the rocket into next month's launcher, aim, shoot.

Next month: Launcher

Letters:

Blow Guns and Darts

Rating = Excellent
General Comments = im a bad kid who hates nabors cat need an easy to make poison without using hores shit

I really think you should read that article again. With a little luck, you might figure out why asking me for a poison recipe is really stupid.

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Acetone Peroxide

60 Acetone
36 Hydrogen Peroxide (30% Concentration)
4 Sulfuric Acid (S.G 1.84)

Mix H2O2 and acetone. Cool to 5 degrees.

Drip in Sulfuric acid. Maintain low temperature.

Stir five minutes (to react mixture; watch temp).

Let sit until Acetone Peroxide precipitates out; several hours to a day. Watch temp.

Filter out precipitate, and rinse in baking soda solution until no bubbles appear.

Dry.

Short shelf life; use within ten days.

Improvised Plastic Explosive

• potassium chlorate (9 parts, by volume)
• zip-lock plastic bag
• petroleum jelly (1 part, by volume)
• nonmetallic mortar and pestle (wooden bowl and spoon)

1) Grind the potassium chlorate to a fine powder.

2) Place the powder into the plastic bag. Add the petroleum jelly.

3) Seal the bag, and knead the potassium chlorate and petroleum jelly into a sticky dough.

4) Remove the explosive from the bag and use. The explosive is best used within 24 hours, as the components gradually react to lower its force.