I ended up making two versions--both of which did indeed fly, although with varying levels of success.
The smaller of the two versions is 4 feet in diameter and weights 3 pounds, 7 ounces. This version has proven to be extremely durable and it flies perfectly. Plus it was relatively easy to make, as well as to throw.
The second version is 8 feet in diameter, and weighs a whopping 15 pounds. This beast will actually fly, but it is terribly tricky to throw. To get any substantial flight distance out of it, it has to be launched from either the top of a cliff, or from a long, steep hill. It's not the most practical thing, but I had fun making it and figuring out how to fly it.
I highly recommend making the 4-foot version, and have included full instructions on how to make one. I have included some basic information on how the 8-foot version was made as well, if anyone is so inclined to make their own super-jumbo frisbee.
Here are videos of both versions of my homemade giant flying discs in action.
Step 1: The 4-foot Flying Disc
- One half-sheet of 1-inch thick pink insulation foam
- A couple rolls of duct tape
- About 10 feet of 1-inch wide nylon webbing
- About 15 feet of 3/4-inch polypropylene rope
- Lightweight nylon fabric (enough to make a 40" diameter circle)
- Hot glue gun (preferably the larger type that takes the fatter sticks of glue)
- Jig saw
- Utility knife with extendable snap-style blade
- A really big compass
I have a large homemade compass that I use when I need to draw really big circles. It was easy to make and comes in very handy. See the photos for details on how to make your own large compass. You will either need to make a large compass to use, buy one similar, or use the string and nail method. The string and nail method works, although it is not as precise as a compass.
Also, the style of utility knife shown in the last photo is very useful. I use it all the time in situations where I need a sharp, disposable blade that is bigger than what comes on a standard utility knife.