A plastic explosive filler can be made from potassium chlorate and petroleum jelly. Thia exploaive can be detonated with commercial #8 or any military blasting cap.
Manufacture of matches
Petroleum jelly (Vaseline)
Piece of round stick
Wide bowl or other container for mixing ingredients.
1. Spread potassium chlorate crystals thinly on a hard surface. Roll the round stick over crystals to crush into a very fine powder until it looks like face powder or wheat flour.
2. Place 9 parts powdered potassium chlorate and 1 part petroleum jelly in a wide bowl or similar container. Mix ingredients with hands (knead) until a uniform paste is obtained.
NOTE: Store explosive in a waterproof container until ready to use.