Effective fragmentation grenades can be made from a block of tnt or other blasting explosive and
nails.

Material Required:
* Block of TNT or other blasting explosive
* Nails
* Non-electric (military or improvised) blasting cap
* Fuse Cord
* Tape, string, wire, or glue

Procedure:
1. If an explosive charge other than a standard TNT block is used, make a hole in the center of the
charge for inserting the blasting cap. TNT can be drilled with relative safety. With plastic
explosives, a hole can be made by pressing a round stick into the center of the charge. The hole
should be deep enough that the blasting cap is totally within the explosive.
2. Tape, tie, or glue one or two rows of closely packed nails to the sides of the explosive block.
Nails should completely cover the four surfaces of the block.
3. Place blasting cap on one end of the fuse cord and crimp with pliers.
NOTE: To find out how long the fuse cord should be, check the time it takes a known length to
burn. If 12 inches (30 cm) burns for 30 seconds, a 10 second delay will require a 4 inch (10 cm)
fuse.
4. Insert the blasting cap in the hole in the block of explosive. Tape or tie fuse cord securly in
place so that it will not fall out when the grenade is thrown.

Alternate Use:

An effective directional anti-personnel mine can be made by placing nails on only one side of the
explosive block. For this case, an electric blasting cap can be used.