I made these cannons for a pirate themed Camp Cranium at Camp Victory. Arrrrrrgggg!!
Step 1: Materials
I have 7 of these cannons to make so you may see pictures with more supplies then needed.
1-> 2' piece of 6" PVC
1-> 6" PVC cap (thick PVC)
2-> 18" pieces of 3/8" Latex Tubing (Surgical Tubing)
1-> 12" piece of 1/2" nylon rope
1-> 5' piece of 1/4" nylon rope
1-> 3/16" x 1-1/2" Eye-bolt
1-> 3/16" Lock-nut
5/32" Drill bit
1/4" Drill bit
3/8" Drill bit
Step 2: Firing Assembly
Cut the 6" PVC cap in half, and cut a notch in the center about 5/8" wide and 3/4" into the cap. About 3/4" from the notch drill a 1/4" hole on the other side about 1 1/2" from the notch drill a 5/32" hole.
Step 3: Firing Assembly continued
Thread the eye bolt into the 5/32" hole and attach the nut to lock it in place.
Step 4: Attach Firing Assembly
Simply glue the half cap onto the 2' PVC pipe
Step 5: Holes for Latex Tubing
Drill four 3/8" holes at the end without the cap on it. It is best to drill them at 90* angles about 1/2" from the rim. First level the entire barrel using a larger level (you can just make it out in the first picture across the half a cap). I used a combo square with a level in it to mark at 90*. Mark two points that the level touch in one position then move it around so one of the points is still in contact with the square. Once they are drilled by sure to smooth the edges they will cut through the latex tubing if not rounded off. I used a x-acto knife and sand paper.
Step 6: Attach Latex Tubing
Insert Latex through 3/8" hole and tie. Be sure the knot is big enough to keep the tube from slipping through.
Step 7: Setup Loading Rope
Take the 1/2" rope and tie it onto the Latex tubing. Use the Epoxy to secure the knot be careful not to get any epoxy on the latex. Next tie two knots one in the center of the rope and one at the end.