Introduction: Marble Cannon
Alex Jasser and Isabel Biasella
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Step 1: Gather Materials
2 ft 1/2 inch PVC pipe
1/2 inch dowel rod
4 rubber bands
1 threaded rod
Step 2: Make Measurements and Cut
Measure and cut out 2- 10-inch wood sides
Measure and cut a 5.5 by 10 inch base of wood
Measure and cut a 13.5-inch dowel rod
Measure and cut 18 inch PVC pipe, now you have an 18 inch and 6 inch pipe
Step 3: Assemble
Drill a hole on the bottom of each side of the wooden base and screw in a wooden stand on each side.
Drill a hole at the top of each wooden stand and screw in the 6 inch PVC pipe
Leave two screws barely attached to the top of each side of the wooden stands
Put the dowel rod through the 18 inch PVC pipe
Drill a hole about 4 inches from the bottom of the dowel rod and put the threaded rod through the hole
Attach a nut on both sides of the threaded rod
Hot glue the 18 inch PVC pipe to the 6 inch PVC pipe
Wrap electrical tape around the PVC pipes to stabilize the hot glue.
Attach two rubber bands on both sides from the outer screws to the threaded rod
Secure the rubber bands by placing a nut on the outside of the rubber bands
Step 4: Test Shoot and Make Increments on the Dowel Rod (Optional)
Test shoot the distances that you could be required to shoot
Make a mark how far you pulled back on the dowel rod if you hit the target for each distance
Don't let Leah test shoot your cannon and get a marble stuck in it
Step 5: Actually Test
Shoot from the distances that Boey gives you and hit the target.