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How to Make a PVC Rocket Cannon - MSNParts & Tools: 1. 18" x 3" Pressure Rated PVC Pipe 2. 3" Pressure Rated PVC End Cap 3. Piezoelectric BBQ Igniter or Flint & Steel Lantern Striker (Available at hardware or sporting goods stores) ...
Drill a 15⁄64 -inch hole centered on the flat part of the 3-inch end cap. Tap the hole. Insert the tank valve and screw the cap to the pipe. Use a compressor or foot pump to fill the tank to 40 psi.
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