![]() 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 |