Stump remover (KNO3) weighed out: 97.5grams | Sugar is weighed out: 52.5grams | Sugar and KNO3 mixed and sifted |
Spread on electric skillet, turned on to 300 F | Cooked until dark, to match the color in police photos | Thinwall PVC tube cut 4.6 inches long, casting base |
Swatch of coffee filter placed between tube and base | Hot propellant is spooned into the tube and packed down | Scale is used to determine amount of propellant n tube |
Allowed to cool. Room for clay header. | Kitty litter and tools for making end plug | Kitty litter is spooned into the tube atop propellant |
1-1/8th inch dowel is hammered to compress kitty litter | Bentonite clay becomes hard when rammed like that | 1/8th inch diameter hole is drilled through plug |
Hole extends 1/2 inch past clay so fuse contacts propellant | Forward end is "covered" with coffee filter | Igniter is short length of safety fuse, attached to squib |